Garden Culture Magazine: UK 10

UK EDITION 路 ISSUE 10

Emperical Data

...

Ih

e

d ar

ows al

l...

Kees

industry

t kn

a ay M

HYDRO

inte rne

?

the

TREE of KNOWLEDGE UK EDITION - ISSUE 10, FREE

What is

Moonshine?

Moonshine is a brewed plant bio stimulant that is designed to promote impressive plant growth, health and terpene production in a variety of ways.

The first effect this illicit brew imparts is an increase in the cation-exchange capacity of your chosen growing medium. In increasing the amount of cations available to the plant at any given ph the fertility of the growing medium is increased, allowing nutrients and trace elements to be more readily absorbed through the roots.

The second effect is to give the plant a good source of plant growth stimulator’s and amino acids. The growth stimulator’s include naturally occurring levels of auxin, gibberellin and cytokinin plant hormones which are readily used by the plant to regulate plant growth, cell division in roots and shoots, bud growth and essential oil production.

Finally the unique formulation promotes the transport of sugars through the plant to the places they are needed giving a noticeable increase in smell and taste.

By using moonshine as directed in your feeding program you will notice your plants have better root systems with improved growth and stamina, giving you healthier sturdier and more disease resistance plants.

It has been reported that by using moonshine growers are noticing exceptional crop quality and yields.

The higher sugar content (BRIX) has been shown to discourage insects, cutting down on pesticide use.

Moonshine provides plants with a greater resistance to cold damage and drought, is 100% biodegradable and contains no carcinogens or PGR’s. Moonshine will not alter your E.C, is pH stable and can be used with any manufacturer’s nutrient program. Moonshine is suitable for use with any growing medium, Soil, hydro system and NFT.

Big Benefits:

• Over double previous root size • Spectacular hardier growth • Increased photosynthesis • Faster maturity and increased yields • Increased sugar content by up to 50% • Increased insect resistance • Contains no plant growth regulators or silicone

Use from start to finish for optimum results. Use 1ml per litre. It will not change the EC or PH. It’s so simple to use!

Available in 500ml, 1 litre, 5 litre or 10 litre containers:

Find your local

Moonshine

retailer at maxigrow.com/where-to-buy/

In a League of its Own Introducing the DEva – Low Frequency Square Wavelength TM electronic ballast from Revolution Micro.

The first of its kind, the DEva was designed and engineered from the ground up. Raising the bar on electronic ballast safety and efficiency in horticultural lighting. Its low sleek design is as space efficient as it is beautiful.

All in One Package No corners were cut in the creation of the DEva. (Except the sharp ones).

Revolution Micro took a whole new approach to digital lighting when the DEva was designed. The Low Frequency Silent Wavelength TM technology coding was written in house to create the ultimate ballast. · Highest efficiency of any 1000W DE · Virtually no EMI runs at 100 Hz · Earns Class B FCC consumer rating · Onboard computer automatically adjusts output power to optimize lamp performance · Avionic capacitors rated for 36 years of continuous use · Manufactured in ISO certified automotive and aerospace factory. · Computer controllable with smart software features such as automatic dimming and reporting power outages. · Dimmable from 600W to 1125W by 1% increments

Includes USHIO AHS-DE1000W/PRO-PLUS Enjoy safer indoor gardening with higher performance. DEva works as good as it looks.

The RLC-1 Smart control for Hobbyists and Large Scale Professional Growers Just like the DEva, the RLC-1 was designed in house to the highest quality standards. One machine can control up to 512 grow lights, in single or multiple zones, as far as 1000 feet away.

The RLC-1 is very easy to program and can simulate sunrise and sunset through automatic dimming. Gradually warming and lighting up the grow room as Mother Nature does. It also captures data on incoming power, lamp life, voltage changes, brown and black outs. The RLC-1 will even sense when temperatures in your grow room are too high and automatically dim your lights until acceptable temperatures have been achieved. This smart controller will intuitively control your lights to ensure your valuable crops do not get damaged.

Now you can run the super high tech lights you always wanted at a price that’s hard to beat.

Patented Aeration Container

They may look the same until they don’t.

Patented aeration Container

Think qualiTy. Think SmarT. Buy SmarT. The Containers You Use Effect The Plants You Grow www.smartpots.com

®

CONTENTS I GARDEN CULTURE

A MITE-Y PROBLEM 46

LEDs

76

URBAN AGRICULTURE

PRODUCT SPOTLIGHT

check

engine

66 16

30 IN THIS ISSUE OF GARDEN CULTURE:

11

50

URBAN FORESTING

WHO’S GROWING WHAT WHERE

9 Foreword

46 A Mite-y Problem

11 Product Spotlight

50 Who’s Growing What Where

16 The Growth of Urban Agriculture

53 The Dunning-Kruger Effect

19 Acid-etched Canning Jars

54 The Scientific Method

20 The Renaissance of Rudolf Steiner

62 Foliar Feeding

26 Going Soilless by 2075

66 Urban Foresting

30 Check Engine

68 Cereal Yield: A Giveaway

35 Five Cool Finds

72 Hydro Chillies are Hotter than Ever

36 The Magic Weed

76 LEDs – a Bright Future?

41 The Hydroponic Riddle

83 Mushroom Hunting in My Backyard

20 THE RENAISSANCE OF RUDOLF STEINER

44 What is Nitrogen

GARDENCULTUREMAGAZINE.COM

7

The Gavita W 150 DE is an alternative for our standard double ended HR96 reflector in our Pro line fixtures and HortiStar reflectors.

Distributed by

www.nutriculture.co.uk www.directgardeningsupplies.co.uk

FOREWORD & CREDITS I GARDEN CULTURE

FOREWORD

.. d. r ea Ih

..

TRE LE KNOW

M ay

a

AG A Z I N E.C OM

Eric

V P O PER AT I O NS: Celia Sayers ldlabel.nl www.go Email: celia@gardenculturemagazine.com t. 1-514-754-1539

UREM

Everest Fernandez’s article “Check Engine” will hopefully get you thinking about what it means to listen to our bodies. We bring our cars to the shop when that cursed “check engine” light comes on, but rarely are we attune to the mechanisms in our own bodies, and there is no Check Body light to let us know when something is going wrong. And, when it does try to tell us something, we are usually too busy to notice, or just plain ignore it. Something to think about. I know I am going to try to listen a little harder for the Check Body signal - just in case it goes off. 3

N C U LT

We will take a look at the always-evolving world of LEDs. Personally, I think they are the light of the future, and soon to become the #1 lighting in indoor horticulture. We are not there yet, but it is definitely exciting times for new lighting technologies.

knows all.

ARDE

In “The Scientific Method”, Stephen Brookes gives a 101 on how to conduct a proper test, one that uses the framework for most scientific studies with verifiable results. Just in case you were going to go to all that trouble of testing for yourself, you might as well do it right. If you are not the scientist type, it allows you, the grower, to better judge the claims being made on any given product.

the int ernet

W W W.G

Who verifies these claims? How can companies legally claim that their product can do this without proof? Well, they can’t. In 2013 the ASA (Advertising Standards Authority) dealt with over 31,000 complaints. As a result, nearly 4,161 ads were changed or withdrawn. It is against the law to make false claims. But of course, many people do not care about that law thing, and say whatever they want. Their study said… but was their study any good?

al Data

Emperic

10 N · ISSUE UK EDITIO

With all of this newfound interest in hydroponics, organics, and other cutting edge growing techniques, the market has been inundated with countless innovative new products and companies.

With this, of course, come the claims. Every week there is another promise for miraculous results. I did the math once, if I used every product that claims to increase yields by 20%, I would triple my already amazing results! Seeing the truth through the hype requires special skills that can be learned by all.

re water d much mo g. They hol cleanest coco on for growin h the y designed se are mixed wit the world. specificall le in re. The clay pebble ir porous structu mediums availab certified g the win of RHP y e gro t aus bes The onl pebbles bec one of the than round market, giving the

10 N · ISSUE UK EDITIO

ING ROW OF G ART THE

and USA reporting record sales.

ED I TO RS Executive Editor: .

Eric Coulombe ndard for Growing.. old Sta G e h T Email: eric@gardenculturemagazine.com Senior Editor: Tammy Clayton Email - tammy@ gardenculturemagazine.com

URE CULT

bright indeed. The market is booming worldwide, with the UK

T hyd he su ro/c peri oco or mix

D E N G A R

and the outlook for 2016 in the indoor gardening industry is

Garden Culture™ is a publication of 325 Media Inc.

?

Garden Culture Magazine is celebrating its 10th UK Edition,

CREDITS

UK

O H Y DsRtr y indu

Gardening from: Advanced 2420 re ing.com T: 020 8443 Nutricultu ced-garden 554080 W: advan T: 01695 Maxigrow ulture.co.uk 221125 W: nutric Supplies T: 01246 row.com Gardening Direct k W: maxig 320850 upplies.co.u T: 01226 gardenings W: direct

lable in

ely avai

Exclusiv

the UK

DESIGN Job Hugenholtz Email - job@gardenculturemagazine.com Special thanks to: Our writers Tammy Clayton, Brian Burk, Green Knight, Evan Folds, Everest Fernandez, Kyle L. Ladenburger, Stephen Brookes, Chris Bond, Theo Tekstra, Amber Fields, Agent Green, and Alistair Martin.

PUBLISHER 325 Media 44 Hyde Rd., Milles Isles Québec, Canada t. +1 (844) GC GROWS w. www.gardenculturemagazine.com Email - info@gardenculturemagazine.com ADVERTISING Eric Coulombe Email - eric@gardenculturemagazine.com t. 1-514-233-1539 D I ST R I B U T I O N PA R T N ER S • Down to Earth Kent • Maxigrow • Nutriculture DGS • HydroGarden • Highlight Horticulture Website: www.GardenCultureMagazine.com

facebook.com/GardenCulture

twitter.com/GardenCulture © 325 Media

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, electrostatic, magnetic tape, mechanical, photocopying or otherwise, without prior permission in writing from 325 Media Inc.

GARDENCULTUREMAGAZINE.COM

9

R

BY ERIC COULOMBE

product spotlight My Favorite System I Love NFT For its overall simplicity, speed of growth, and pla nt versatility my favorite garden is NFT. NFT, in case you don’t know , is short for Nutrient Film Technique.

No one knows NFT better than Michael Christian, the founder of American Hydroponics, and industry pioneer since 1984. In recent years, they have turned their focus and NFT expertise to the commercial agricultural sector.

I asked him, why NFT? “NFT is one of the simplest, efficient, and most productive methods for growing greens and herbs I’ve ever seen. Since 1995, we’ve grown just about everything in NFT… except potatoes. ;-) The technology is deceptively simple, a slow moving recirculated stream of nutrient rich water flows down a flat-bottomed plastic channel. What’s so cool about it is the ease of diversifying. If markets shift, it’s easy to change varieties without missing a beat. Most of our clients are doing 24 crop turns a year, year round in greenhouses (compared to 4 in soil), which makes it very profitable per square foot. Amazing technology!”

Most systems or growing styles have their own merits, and work great when properly maintained. I have tried almost every technique possible, and had success with all of them, but the simplicity, and versatility of NFT won me over. There is no one-way to set up NFT, and is perfect for people who like to build their own gardens. When using canals, or tunnels there are no limitations to what can be done. They are stackable, which means the useable square footage can be doubled, tripled and more depending on ceiling height. Length is also not an issue, as they can be cut to whatever your space requires.

Michael Christian, the founder of American Hydroponics,

I am presently using Nutriculture’s NFT Gro-Tank. It was my first table style NFT as opposed to canals. I love it - best NFT ever! Last winter I grew Kale in 4 different systems, this new one beat them all; the fastest growth, and the largest plants with the least maintenance. It took me 5 minutes to set up, and came with everything but the rockwool. It is also the easiest to clean in between harvests.

If you are a beginner, or looking to grow lots of leafy greens, there is nothing better than NFT. Advancements in watersoluble nutrients and additives have made NFT a viable option for any grower. It is my favorite system, but then again, that’s just me.

GARDENCULTUREMAGAZINE.COM

11

f

h s e r f

GARDEN PRODUCTS I GARDEN CULTURE

-4 Crop master QD Another world first in horticultural lighting from Budmaster LED. The Cropmaster QD-4 is four watts of pure efficiency using the latest ‘Cadmium Free Quantum Dot Nano Crystal’ technology giving an exacting spectral output. The Nano crystals are excited (powered) by 62% (Radiant) efficient LED, making this the world’s most efficient LED grow light.

Place this neat little unit on top of your propagator and you will be amazed at what four watts of CFQD can do.

moth m a M e Th avita G e t i l E Tents Gavita and Mammoth tents work together to create the perfect growing space for your Gavita DE. Using every possible photon, and making the most out of your lamp is the objective of all growers. But lack of knowledge, misinformation, or poor design often results in wasted light.

This inefficiency directly influences your yield.

N E W B u d m a st e r C O B -X

The new Budmaster COB-X light engine is here, and as you have come to expect from Budmaster, we have chosen the highest-performing COB (Chip on Board) on the market from ‘CITILED the Light Engine’. The CITILED Series 4 High CRI COB outperform every other COB on the market on both efficiency and output, winning the ‘Highest Luminous Efficacy’ award year on year. So, if white is right for you and your plants, we can now offer the most efficient white LED possible. Shortly to be followed by the launch of the CITILED Horticultural Cob (pink light) series, which will be the world’s first proper horticultural COB.

Seesogreen nutrients

The Power of Powder Seesogreen has created a high ly concentrated, complete line of plant nutrients in 3 pow der products. Formulated to be ideal for fast growing ann uals, Seesogreen has just what your plant needs for every stage of its development.

Results will impress even the mo st seasoned grower and will be easy enough to use eve n if it is your first garden. www.seesogreen.com

G1 and G2 are designed to give optimal light levels, and uniformity for a 1 or 2 1000W light room.

Like all Mammoth Tents: • 100% Waterproof • Light-Proof Design • Super Solid – 22mm Steel Poles • Easy One-Person Assembly • Highly Reflective Mylar • Available in 2.15m (7.1 feet) and 2.4m (7.9 feet)

GARDENCULTUREMAGAZINE.COM

13

BOTANICARE.COM

PURE BLEND PRO

KIND®

®

Natural & organic based plant food

SWEET®

All natural mineral supplement

Plant nutrient system Optimal blend of minerals & organics

LIQUID KARMA® Plant growth enhancer

PURE BLEND® TEA

Organic-based compost solution

CAL-MAG™ PLUS

Calcium, magnesium & iron

Botanicare® premium plant nutrients now available in the UK. Distributed by: Down to Earth Kent LTD. downtoearthkent.co.uk | +44(0)1233 500 633

GARDEN PRODUCTS I GARDEN CULTURE

Sunglass by day, grow glass by night

mium e r P n e Sev Method ics: t p O m oo pairs fresh style with Grow R ion Revolution HPSx Transition

Method Seven’s new Limited Edit wear for 2016. absolute best in grow room eye the you g brin to s wes pro l technica e sodium lights, and e and protect under high pressur Transition lenses color-balanc outside. Its unique by darkening when you step ses glas sun into m sfor tran actually and a wide fit offer e features concealed flex hinges hand-crafted Italian acetate fram UV protection. imum comfort and durability. Full max ver deli but k, loo h fres a not only proper cleaning and microfiber pouch included for Protective hardshell case and Seven.com storage. $169 - www.Method

r

Gavitareflectors Gavita’s new range of reflectors builds on 30 years of experience developing horticultural lighting fixtures.

As lamps change, so do reflectors. Gavita’s new line of reflectors are specifically developed to offer an even higher efficiency with the current generation double ended lamps.

The M 110 DE SR (Small Room) reflector provides light levels and uniformity never seen under a single fixture. You want a deep crop penetration with great uniformity for larger plans? The HR96 reflector is your choice. Want to be a bit closer to the crop in a large room or optimal distribution with lower light levels? The W 150 DE will deliver you unrivalled uniformity and efficiency.

Gavita Holland. Enlightening. www.gavita-holland.com

) n o i t u l o v e ( d e va b a l l a s t

.

DEva is a completely integrated, plug ‘n play, no compromise plant lighting solution ® right The state of the art, low frequency Silent Squarewave electronic ballast is built e, reflectiv 97% e into the reflector, passing the FCC’s tough Class B EMI limits.Th which aluminium reflector houses an Ushio double-ended 1000W HPS lamp d, protecte Surge . comes included. All you have to do is plug it in and start growing computer controllable, and generator safe, DEva also offers peace of mind.

d e va R L C -1 C o n t r o l l e r

These days having a great ballast isn’t enough. Smart controllers are soon to be the new normal for indoor growers. Just like DEva, our controller was designed and manufactured in-house.

While the DEvas can work with your existing controller, the RLC-1 takes it a step further. It will simulate sunrise and sunset, gradually waking up your plants, and gently putting them to bed. It will also capture data on; incoming power, lamp life, voltage changes, brown-outs, and black-outs. The RLC-1 also senses room temperature, and will automatically dim the lights if the room becomes too hot.

No more fiddling with knobs, output power can now be controlled by the RLC-1, from 600W to a blinding 1150W - in 1% increments.

The RLC-1 connects with up to 512 DEva 1000W grow lights!

Engineered to be simple.

Find out more: revolutionmicro.com/revolution-products/

GARDENCULTUREMAGAZINE.COM

15

BY BRIAN BURK

The Growth of

Urban Agriculture 1890s Detroit: where vacant city lot gardening for food security began

In the past, most people of the world used land wherever they could for growing food. It was necessary and purposeful. It seems though, due to industrialization and urbanization, that we, as consumers, have become complacent with the ease of grocery shopping. But unfortunately, like most changes, it took poverty, unemployment, and rising food costs to get North Americans to look at their empty lots, front lawns, or that slim patch of soil in front of their sidewalks as a source of food. We call this idea Urban Gardening today.

16

URBAN AGRICULTURE I GARDEN CULTURE

Urban gardening has been around for years - but recently it’s come

full circle

One of the first instances, in the United States, of using empty city lots to grow produce was initiated by Detroit Mayor Hazen Stuart Pingree. 1890s Detroit wasn’t what someone would consider a shining mecca of hope. The streets were overflowing with violence while Detroit’s inhabitants were in a monetary drought. This lack of cash made it difficult for people in the city to purchase any food. Mr. Pingree, obviously worried, had an idea; he made an appeal to use empty land in the city for gardens and potato patches; it was a success.

Pingree’s Potato Plan was implemented, and it was copied from city to city, all over the nation. These once vacant lots now housed a source of an abundant and sustainable food source, which allowed the less affluent city dwellers of Detroit, and across the country, to eat and earn money during an economic recession.

vegan lunches to students and community members. The kitchen serves by donation, but no one is turned away for lack of funds.

There are also many schools and businesses who get into the growing game.

The Edible Schoolyard in Berkeley, CA integrates gardens into schoolyards so kids can get involved with the growing process. There is also a movement in the United States called Slow Food USA, which “provides technical assistance, resources, and partnerships to cultivate the next generation of healthy eaters of good, clean, and fair food.”

The first type is in your backyard, literally. This seems to be the most common type, planting seeds where you live, watering, and letting your produce grow. It gives you a great feeling when you pick your food from outside your door, and put it straight in the pot to cook.

In a city where growing space is hard to come by, rooftop gardening offers a viable means of food production. The Alternatives’ project in Montreal holds workshops to help locals acquire the skills needed to start their own rooftop garden. If you visit their website, they teach you how to start one up as well. Also, billed as the largest rooftop garden in the world, is the Brooklyn Grange. The Grange is around 108,000 square feet, or 2.5 acres. It’s spread across two rooftops, and provides around 50,000 pounds of organically grown food. The produce is sold to restaurants, and through local weekly farm stands. According to the Brooklyn Grange’s website “Rooftop farms have the potential to improve urban quality of life, create jobs, increase access to healthy, fresh foods, and provide environmental and agricultural education to those of us who live in and love the city.”

Community projects are another example of local food growing. As the name implies, it is based around community efforts to make sure their area is provided for when it comes to food security and food production. Some community projects include The Stop community food center in Toronto, The People’s Grocery in Oakland, CA, and there is also City Farmer in Vancouver, a group that will teach you the ins and outs of growing in the city. Concordia’s Loyola Campus in Notre-Dame-de-Grâce has a community garden named The People’s Potato, which provides members of this community fresh fruits and vegetables. It also encourages locals to get up close and personal with the process of managing a sustainable food source. Attached to this garden is a soup kitchen serving

Urban gardening has been around for years. Recently, though with the change in behavior towards GMOs and organically grown produce, this idea has grown; it’s come full circle. Once we grew our own foods out of necessity, to feed our family and the families around us. You didn’t pay for a tomato, you grew it or traded it for something that you didn’t grow yourself. But modern times and modern devices brought a change in the way we interact with our sustenance, blinding the world with the illusion of convenience, when in reality, the most convenient food is outside your back door, on your roof, or maybe a little farther from your porch in the local community garden. Urban gardening will keep growing and growing. It will continue to expand out of the need for at least one thing, the hope that everyone can be fed. 3

Since then, in North America, urban gardening has grown into many shapes and forms, allowing people from all walks of life to get involved. As interest and participation swelled in recent years, it has evolved into an agriculture movement.

GARDENCULTUREMAGAZINE.COM

17

STORAGE I GARDEN CULTURE

BY GREEN KNIGHT

Acid-Etched

canning

jars

Canning jars are commonly used as storage containers for dried herbs. They are glass, reasonably priced, seal tightly, and come in several useful sizes. As with other clear stash containers, once filled they should be stored in a dark location (like a drawer or cool, dry closet), to prevent light damage.

While very functional, canning jars are also a bit on the plain side, so I decided to see if I could do something to dress them up. I liked the results, and thought I’d share.

Glass etching is a technique commonly used to etch wine glasses to commemorate special events such as weddings.

WARNING: The etching cream has acid in it. Gentle readers, keep it off your skin, and things you don’t want acid etched.

The materials used were a small jar of glass etching cream (purchased at a craft store), some etching stencils (also bought at the craft store), a few clean canning jars, a couple wooden craft (popsicle) sticks, and a pair of disposable gloves.

Follow the instructions on the acid cream you buy, but the general process is to:

tend to look better when acid etched than large areas, so avoid large voids in your patterns.

Put on the gloves, and using a craft stick, carefully apply small amounts of the cream to the areas to be etched. The areas should be well covered, but don’t use enough to cause a dripping problem. Quickly wipe up any drips with water. I’ve found it helpful to return in a short while and disturb the surface with one of the sticks, mixing the cream about again.

Wait as per the instructions, 5 minutes or so, (I haven’t found a drawback to leaving the creme on an extra minute or two to make sure it has taken, whereas if the cream is taken off too soon, the pattern may be too light).

Remove the stencils, and rinse with water until clean. Dry and admire.

If it comes out well, impress your friends with it.

Make sure the area you are applying the design on is very clean, if in doubt, wipe down with alcohol first, and allow to dry.

Carefully apply the stencils for your design, or use blue painter’s tape to mask off lines and patterns. Small areas

It doesn’t make your jar work any better; it doesn’t have any use other than aesthetic. Sometimes it’s worth making things a little prettier, or a little nicer, simply because you can. Even if it is just a canning jar. 3 GARDENCULTUREMAGAZINE.COM

19

BY EVAN FOLDS

BY Evan Folds

e c n a of s e nc s sa i is na a Re n The R e

r e n i e t S f l Rudo

there is more to life than what is physically here My start in agriculture began over thirteen years ago with a revolutionary book called Secrets of the Soil, and I don’t say this lightly, but it changed my life.

20

RUDOLF STEINER I GARDEN CULTURE

“biodynamics” - agricultur al methods developed by Steiner repr first reaction to indust esent the very rial agriculture I was schooled at a major university with degrees in biology and religion, and as a result of the countless hours spent memorizing textbooks and analyzing the philosophies and understandings of popular science and antiquity, I believed that I had a good grasp of the human condition and our place within Nature. I was soon to find out that I had only scratched the surface of the realities and mysteries of the natural world.

Secrets of the Soil allowed me to put dogma aside, and humbled me to the qualitative and supersensible secrets of life that are not readily introduced without effort and experience. Rather than worshiping the experts of the past and present, I realized that in order to come to terms with the inner workings of being alive, I had to become my own expert.

be found in a work called The Agriculture Course that is also a worthy read for anyone looking to expand their understanding and abilities within agriculture.

The biodynamic methods Steiner recommended were presented in a way that at the time was impossible for my analytical mind to understand – leveraging celestial rhythms for plant growth, burying cow horns full of manure and quartz for seasonal potentization, stirring water back and forth in order to implode, energize, and potentize, “peppering” the land with the essence of pests in the correct moon cycle, and the list goes on.

a revolutionary book called Secrets of the Soil changed my life

The popular science taught in school is quantitative, not qualitative; it leads with the mind, not the heart. Spirituality in science and education is sacrificed for the literal comprehension of following directions, and what can be measured with replication.

My journey into spiritual science began with a book, and soon manifested in me seeking out farmers and shamans that had already accomplished a connection to our spiritual reality. They didn’t need to listen to others to seek truth, they found it through experience. They helped me find comfort, not in the concept of a remote higher power or data derived through the scientific method, but in the idea that there is more to life than what is physically here, and that the further we look, the less we know.

Secrets of the Soil was also my first encounter with a man named Rudolf Steiner (1861-1925). The agricultural methods developed by Steiner are now known as “biodynamics”, and represent the very first reaction to industrial agriculture.

The lectures that introduced the biodynamic methods can

Biodynamics is not a complete farming system, but as I began putting these methods into use, and began to experience the results of their implementation, I found that the skepticism I was taught to embrace washed away into amazement, excitement, and humility. Not only was I a better farmer, but I became a better person.

Through my growing curiosity, and the relationships I developed, I taught myself through experience to align with the essence of Steiner’s approach – that the materialistic and measurable reality we are asked to adopt through popular science, organized religion, and education are only half of the story. Life happens in its fullness through imagination, intuition, and intention; and our ideas are real, not in the sense of them being thoughts, but that they become our literal reality.

For planet Earth and human consciousness, life before Rudolf Steiner was a different sort of place. Never before had such a man been able to articulate the spiritual language necessary to express the true nature of human consciousness, and how we must use it in order to realize our potential and, in fact, never before was such a man needed so desperately.

GARDENCULTUREMAGAZINE.COM

21

䌀夀䌀伀 匀唀倀䄀 匀吀䤀䬀夀

䌀夀䌀伀 䬀䰀䔀䄀一匀䔀

匀䨀 䔀渀琀攀爀瀀爀椀猀攀猀 椀猀 愀 氀攀愀搀椀渀最 䄀甀猀琀爀愀氀椀愀渀 洀愀渀甀昀愀挀琀甀爀攀爀 愀渀搀 匀甀瀀瀀氀椀攀爀 漀昀 愀 挀漀洀瀀爀攀栀攀渀猀椀瘀攀 爀愀渀最攀 漀昀 猀甀瀀攀爀椀漀爀 栀礀搀爀漀瀀漀渀椀挀 瀀爀漀搀甀挀琀猀Ⰰ 搀攀瘀攀氀漀瀀攀搀 愀渀搀 爀攀猀攀愀爀挀栀攀搀 戀礀 漀甀爀 爀攀猀椀搀攀渀琀 䌀栀攀洀椀猀琀 愀渀搀 瀀氀愀渀琀 倀栀礀猀椀漀氀漀最椀猀琀⸀ 匀䨀 䔀渀琀攀爀瀀爀椀猀攀猀 甀猀攀猀 漀渀氀礀 琀栀攀 昀椀渀攀猀琀 䈀爀椀琀椀猀栀 瀀栀愀爀洀愀挀攀甀琀椀挀愀氀 椀渀最爀攀搀椀攀渀琀猀Ⰰ 攀渀猀甀爀椀渀最 椀渀搀甀猀琀爀礀 氀攀愀搀椀渀最 瀀爀漀搀甀挀琀猀 愀渀搀 琀栀攀 栀椀最栀攀猀琀 焀甀愀氀椀琀礀 愀渀搀 挀漀渀猀椀猀琀攀渀挀礀 愀瘀愀椀氀愀戀氀攀⸀ 匀䨀 䔀渀琀攀爀瀀爀椀猀攀猀 漀昀昀攀爀 愀 瀀爀攀洀椀甀洀 爀愀渀最攀 漀昀 瀀氀愀渀琀 渀甀琀爀椀攀渀琀猀 愀渀搀 愀搀搀椀琀椀瘀攀猀 琀漀 琀栀攀 栀礀搀爀漀瀀漀渀椀挀 洀愀爀欀攀琀⸀ 䌀礀挀漀 倀氀愀琀椀渀甀洀 匀攀爀椀攀猀 瀀爀漀搀甀挀琀猀 愀爀攀 猀漀氀搀 戀礀 漀渀氀礀 琀栀攀 戀攀猀琀 ᰠ挀攀爀琀椀昀椀攀搀ᴠ 搀椀猀琀爀椀戀甀琀漀爀猀 椀渀 琀栀攀 栀礀搀爀漀瀀漀渀椀挀 椀渀搀甀猀琀爀礀 戀愀挀欀攀搀 甀瀀 戀礀 䌀礀挀漀 倀氀愀琀椀渀甀洀 匀攀爀椀攀猀 瀀爀漀搀甀挀琀 愀渀搀 洀愀爀欀攀琀椀渀最 猀甀瀀瀀漀爀琀⸀

挀礀挀漀昀氀漀眀攀爀⸀挀漀洀

RUDOLF STEINER I GARDEN CULTURE

Food plants no longer co nt the forces people need ain The turn of the 20 th century marked the onset of the industrial revolution, when humanity began to collectively rely on education and outside sources rather than on instinct. What he brought forward allows the individual to leverage the value in the construction of industry and human analytics, and walk with consciousness into the materials and energies that manifest the modern human.

there are forces at work in the living soil food web that cannot be seen with the eye

In the introduction to The Agriculture Course Steiner was asked, “How can it happen that the spiritual impulse, and especially the inner schooling, for which you are constantly providing stimulus and guidance bear so little fruit? Why, worst of all, is the will for action, for the carrying out of these spiritual impulses, so weak?”

So who was Rudolf Steiner? He was born on February 25th, 1861 in Kraljevec , Austria. At the age of eight Steiner was already aware of the spiritual world.

Writing about his experiences at this age in his autobiography, he said, “... the reality of the spiritual world was as certain to me as that of the physical. I felt the need, however, for a sort of justification for this assumption.”

At an early age Steiner’s father recognized his abilities and facilitated his development through home schooling that culminated in his acceptance into the Vienna Institute of Technology where he studied mathematics, physics, natural science, and philosophy through an academic scholarship.

Steiner replied, “This is a problem of nutrition. Nutrition as it is today does not supply the strength necessary for manifesting the spirit in physical life. A bridge can no longer be built from thinking to will and action. Food plants no longer contain the forces people need for this.”

From this higher schooling, he was entrusted with the task of publishing the natural scientific works of Goethe, who was a prominent 19th century figure in German literature and culture. This commission was a pivotal moment in Steiner’s life, providing stability and the mental space to develop his own philosophy he called Anthroposophy, which attempts to synthesize the realms of science and mysticism.

For me, this quote answers the challenges faced by the modern world – what we think, we grow, and what we eat, we know. Living foods and localized regenerative agriculture offer tangible solutions to the issues that we face - climate change, economic development, healing through food, decentralization of agriculture, and on and on. We are stuck in the Catch-22 of being unconsciously malnourished, yet lacking access to the life force in food that will allow us to break the chains that bind our will into inaction.

Anthroposophy postulated that heightened consciousness allows mankind access to spiritual knowledge, a centerpiece to understanding the thrust of his professional career.

Anthroposophy provided a platform for Steiner to investigate the spiritual significance of many aspects of the human experience, from the arts and architecture, to education and societal order, even agriculture. The areas of his interest and expertise are almost endless.

GARDENCULTUREMAGAZINE.COM

23

Want to become a Genuine Quality Retailer? visit genuinequality.co.uk to find out how!

Find your local Genuine Quality Store at genuinequality.co.uk/store-locator

RUDOLF STEINER I GARDEN CULTURE

there was aned e increasing n e to for all peopilnto penetrate s of the mysterie Nature

Steiner never conducted a project, or developed a lecture without being asked. He was more of a supersensible problem solver than an egoist or a philosopher, as he has been pegged by many who are aware of his work.

He gave over 6,000 lectures in his lifetime, upon reading them it is obvious that there is more going on than a pondering of scientific or philosophical tenets. His work was rooted in experiencing the realities of the spiritual world in our physical forms, and applying them towards a marriage of the two that realized the potential of the human condition.

Steiner had an amazing gift of spiritual insight, but an equally amazing ability to remain rational to all aspects of the living system being investigated. He did not discount the materialism and reductionist science of our age, he embraced it, and made it an integral part of his approach, which is critical to any possibility for widespread acceptance.

For instance, we rely on the microscope to evaluate soil microbes, but there are forces at work in the living soil food web that cannot be seen with the eye, or measured with the instruments charged with investigating the material world. Rudolf Steiner called them ‘formative forces’.

Realizing that what holds humanity back from spiritual knowledge is a lack of soul courage precipitated by a lack of life force in our food, Steiner encouraged people to search within themselves with restored vitality and motivation.

He even developed curriculum around a set of practices to accomplish this in his work Start Now!: A Book of Soul and Spiritual Exercises.

Steiner put it in this way: “Human beings want to receive everything passively, to sit down in front of the world as though it were a movie, and to let the microscope and the telescope tell them everything. They do not want to temper the instrument of their own spirit, or soul, through activity.”

In other words, we must rely on our intuition and experience in using these supersensible concepts to determine their value, not simply the ability to measure and replicate. When he was asked upon first articulating the biodynamic methods if the research should begin right away, he replied, “The most important thing is to make the benefits of our agricultural preparations available to the largest possible areas over the entire earth, so that the earth may be healed and the nutritive quality of its produce improved in every respect.

That should be our first objective. The experiments can come later.”

Steiner therefore requested all people, through individual meditative activity, to awaken to a new level of consciousness. In addition, there was an increasing need for all people to penetrate into the mysteries of Nature and humanity through the spiritual metamorphosis of individual awareness. This process could be ac­ complished by the development of human spirit forces, not solely from external substances and matter.

Our science, culture, religiosity, etc. are all dominated by the materialism that defines the modern age. In Steiner’s view, antiquity was born with an innate connection to the spiritual world that is lost on the modern human, and it is our task to rediscover it consciously.

We see this in modern conventional agronomy where we are at the mercy of toxic rescue chemistry, and the incessant economic and intellectual onslaught of corporate materialistic agriculture, but we see the antidote to this phenomenon being expressed within and all around us at the local farmer’s market, or in our own methods of resistance and buying power.

Going beyond the rudiments of popular science and religion, our better angels demonstrate that the inherent life force woven through all plants, stones, soil, water, and air is central to our survival, and our relationship to the soil is of vital importance to our future. Regenerative farming techniques, what we call BioEnergetic Agriculture, contains the answers to what ails modern society, all that is required of us is to put them into action. 3 GARDENCULTUREMAGAZINE.COM

25

BY TAMMY CLAYTON

GOING

SOILLESS BY 2 075 That’s not a goal, it’s what over half of Earth’s land surface could become in the future. Bald. Reduced to vast expanses of naked bedrock. Not much hope of reaping a harvest from that, let alone a profitable one. Worse still despite the knowledge dispensed by Cornell University in 1997 that topsoil was being lost at 15 times greater rate than ‘acceptable’ levels on over 90% of American cropland, the number of acres under till has continued to increase.

26

SOIL LOSS I GARDEN CULTURE

the National Resources Conservation Service still uses estimates from 1941 to determine tolerable topsoil loss SO IL EROSI ON FROM TR ADITI ONAL AGRI C ULTUR AL PR AC TI C ES IS A M A J OR CONTRIBUTOR TO ENVIRON M ENTAL DA M AGE, WATER SHORTAGES, AN D C LI M ATE C HANGE IN MULTIPLE WAYS

There’s an acceptable level of soil loss? Yes, the Tolerant level, or T-factor, which was determined in 1941 to be 3 tons per acre using the reasoning that it would take 400 years to lose that all important 8 inches of fertile topsoil. The criteria used to formulate this standard were economic, not environmental.

It was based on the amount of fertilizer a farmer would have to apply to replace the soil nutrients lost to erosion. They decided that 4 tons a year would not be viewed favorably by farmers in terms of the cost maintaining crop fertility.

75 Years Later Despite some noise that crop vigor requires all 8 inches of rooting depth, the National Resource Conservation Service (NRCS) still uses this T-factor developed way back when. In some soil types, that 3 tons per acre is still acceptable, while in others it hits 5 tons annually. In the eyes of NRCS, tolerable topsoil loss means enough still intact to produce a crop with a reasonable investment in farm inputs. And the ‘conservation service’ openly states that their standard assessments do not cover all the erosion taking place.

While they know that conventional cropping methods refresh the topsoil by less than one quarter ton per acre, in 1985 they devised a T1 and T2 level of acceptable erosion standards. T1

GARDENCULTUREMAGAZINE.COM

27

Precision farming doesn’t replace the topsoil covers economical concerns on the cropping site, while T2 covers off-site social concerns like water quality.

“Soil erosion at rates greater than T is a special concern because it threatens agricultural sustainability. Sheet and rill erosion tends to be a greater problem in the humid East, while wind erosion is a greater problem in the arid and semiarid West. Estimates of streambank, gully, irrigation-induced, and ephemeral gully erosion currently are not included in standard soil erosion assessments. Such forms of erosion can be substantial in certain situations.”

-- State of the Land, NCRS publication And on top of that, there is geologic, or natural erosion that takes place without any disturbance from man.

The Erosion Standards The T-factor data the NRCS uses to track the state of the land was tabulated for all soil types in the United States, but until recently there was very little actual measuring of the soil washing off from rain, snow, and ice movement.

Some of the richest soil in the US is being washed into the Mississippi Watershed, which ultimately deposits into the Gulf of Mexico - laden with fertilizers, and agricultural pesticides. This has resulted in a huge dead zone not far south of the coastline. In 2014 it was over 5,000 square miles of water, and thanks to heavy rains in June 2015... it has grown to 6,474 square miles. The Gulf Dead Zone disrupts the environment from the water’s surface to the bottom of the ocean.

Surely, this lost soil is being deposited along the way nationwide, yet all worries in The States are about the nutrients, farm chemicals, and urban contaminants. No mention of decreasing depths in waterways due to erosion runoff is found in the expectable resources. It was largely foreign sources and retail books located while researching this topic that referred to increased flooding from topsoil runoff being deposited in waterways.

Maine Department of Transportation knows that ‘runoff sediment’ smothers fish eggs at the bottom of waterways... sounds like raising the bottom to me. In a book about Nigeria written by Lorna Robinson in 2006 a farming case study relates that the local streams and rivers were much shallower than they had been before the forest was cleared.

So, how much of the flooding in recent years is really climate related, and how much is caused by poorly managed soil not being able to absorb heavy precipitation coupled with shallower catch basins; streams, rivers, and lakes? The change would have been slow, but steady, increasing more rapidly as the decades passed, more acreage went under till, more forests were cleared, more roads and subdivisions were built, and cities expanded.

The Big Picture That 3 tons of topsoil lost annually per acre of tilled farmland is an average based on average soil moisture. There are currently some 349 million acres of cropland in the US, and 90% of it is losing topsoil at 100-200% greater rates than previously assumed. The total loss annually is over a billion tons of viable soil - just in the United States.

Loss of Control And what, one wonders, is all the soil doing to the depth of rivers and streams? Iowa cropland has lost over 50% of its topsoil in the past 150 years - where did it go to exactly?

Dirt is heavier than the organic matter in erosion runoff, so it isn’t going to remain moving with the water for long, certainly not all the way from the central Midwest to the Gulf of Mexico. It can’t all be traveling from the Heartland to the Gulf as heavy sediment, and cropland soils from coast to coast heads to the lowest point in a downpour, and under melting ice and snow.

28

Some have adopted low-tillage ‘conservation’ planting methods, which does reduce the amount of erosion with less soil disturbance and cover crops. While farmers all over the world report that this does improve a crop’s ability to withstand dry spells, it is not widely adopted in the US. And calling it a conservation method when the amount of soil erosion is still many times greater than it can be replaced continues to waste the resource that feeding the world relies on, and the planet needs to maintain balance.

SOIL LOSS I GARDEN CULTURE

REASONING THAT 3 TONS PER AC RE LOST ANNUALLY M EANT THE 8 INC HES OF TOPSO IL WOULD L AST 40 0 YEARS

This so-called tolerable level of erosion is destroying life in oceans and freshwater quality, increasing algae bloom, removing the soil’s ability to absorb water (which in turn increases flooding), reducing soil’s capacity to hold water in reserve for crop resources, and causing a lot of sequestered carbon to be released into the air. It’s not just a problem in the US. The same farming methods are used in Europe, Canada, South America, the UK... literally everywhere.

Like the oil industries, the industrial agriculture system just keeps chugging on, doing what they’ve always done, on an ever increasing expanse of land. Oh, it’s more precise these days? The planet isn’t a factory. Precision doesn’t replace the topsoil, and given the amount of artificial nutrients and chemical problem killers they’ve applied, 60% of the world’s arable soils are seriously degraded or dead. Which means?

It erodes at a faster rate than healthy soils rich in organic matter, and teeming with microorganisms.

But Big Ag continues to claim that they’re prepared to feed the coming population explosion. As if monster tractors and massive implements, coupled with GMO crops, glyphosate, and cheap fertilizers can replace fertile ground. They ignore this massive soil erosion problem that increases while doing things their way, even though erosion creates over $25 billion in lost productivity in the US every year. No skin off their teeth, they’re not farmers, but suppliers.

Perhaps the Chemical BioAg Mob is busy concocting GMO crops that produce their own fertilizer, pesticides, and weed killer simultaneously so it will thrive in subsoil economically, but it’s highly unlikely they’ll ever have a solution to feeding the world with solid rock as a growing medium.

The Future Maybe in 2075 the big money will be in arks outfitted with solar power, growing rooms, and wireless multimedia walls. We’ll need floating cities if all the topsoil on cropland is allowed to be lost. All the major cities are built next to rivers, lakes, and oceans... and seas are already rising due more to runoff than melting polar ice.

What?

“A staggering paper was published recently indicating that nearly half of the sea level rise since 1960 is due to irrigation water flowing straight past the crops and washing out to sea.”

-- Professor John Crawford, University of Sydney, Time’s World Economic Forum (2012) But it’s really bigger than agricultural runoff from this aspect.

Mining is also a contributor. Then you’ve got buildings, paved surfaces, residential lawns, household and industrial water use added to the total amount of groundwater that finds its way to the oceans. And all of it contains things that do not belong in the water - salt or fresh. And groundwater extraction has more than doubled since 1961 too.

Obviously, soil erosion from traditional agricultural practices is a major contributor to environmental damage, water shortages, and climate change in multiple ways.

Unfortunately, a lot of people still view soil like the chief of the U.S. Bureau of Soils did in 1909...

“The soil is the one indestructible, immutable asset that the Nation possesses. It is the one resource that can not be exhausted; that can not be used up.”

And this will be the legacy of our era, one that values profits higher than modest changes that might preserve the very source of our existence. If it doesn’t change civilization will collapse, and it won’t be the first time that poor agricultural practices brought it all to a grinding halt.

Those deposits in the Gulf of Mexico may give archaeologists in the future the same clues on what happened to us as samples from the ocean floor off the coast of Greece provided us with information about the demise of the Mycenaean civilization. But that would only account for part of North American civilization. A few hundred years from now, what befell the Sources: rest of North America could become as • bit.ly/nrcs-paper-1990s mysterious as the disappearance of the • bit.ly/T-factor-paper Mayans; the most recent agriculture power • bit.ly/j-crawford culture to vanish. 3 • bit.ly/cruse-erosion • bit.ly/druid-report • bit.ly/runoff-sea-levels

GARDENCULTUREMAGAZINE.COM

29

BY EVEREST FERNANDEZ

k c e ch CHECK ENGINE. It was my trusty 1992 Subaru Liberty GX’s oh-so-helpful red warning light. When it first appeared I was concerned. Would I make it home before the engine exploded? I did—you’ll be relieved to hear—without incident, and later that evening, a more mechanically-minded friend assured me that I had nothing to worry about. It happened all the time, he claimed, and wasn’t worth investigating further. Sure enough, after a few months, I became quite used to it, and after a year or two of willfully ignoring it every day, I even began to find those persistent, flashing, red capital letters perversely comforting.

CHECK FOOD! FOR THE LOVE OF GOD!

CHECK FOOD. No such warning light exists, alas. Just imagine if it did! Picture the scene. You’re seated in your little booth with the other McZombies, about to chow down on some ammonia-disinfected, herbicide-resistant, corn-stuffed, gut-diseased, deeply sad cow burger, the patty drowning beneath a cheese-like substance indistinguishably merged with a proprietary sauce. Waiting in the wings is a tub of your favorite, supersized soda. It’s basically a heavily fluoridated concoction of carbonated water and headache-inducing, vision-blurring artificial colorings and flavorings. You tell yourself that you’ve been good—after all, you passed on the full-fat, high fructose corn syrup cola, and opted for the aspartame-laced “diet” version instead. CHECK FOOD! Those words flash into your field of vision, most likely still in the default font, demanding your attention before you take another bite. CHECK FOOD! For the love of God!

REMIND ME LATER. Better yet, DON’T TELL ME AGAIN. Perhaps if Google Glass II ever gets off the ground then dietary dialogue boxes like these might actually exist one day. It would certainly necessitate some form of augmented reality, because our brains—the natural, biological arbiters of our awareness, aren’t going to do it on their own. On the contrary, this most precious of 30

organs (the one which, depending on your philosophical gait, is either responsible for creating the fabric of our individuality, or for filtering universal collective consciousness into a personalized stream) are the most critically injured by this head-on collision with junk food.

Processed, notional “food”—empty of any goodness or vitamins, and instead pumped full of fat, salt, and sugar— not only fools our simian impulses into craving it, but it also starves our brains of the essential compounds required for healthy function, and basic cellular maintenance. We see it manifested in the everyday stuff—irritability, lethargy, depression, boredom, apathy, and confusion—to the diseases we hope we’ll never get: various forms of cancer, Parkinson’s, and Alzheimer’s. Sure, our hearts, livers, lungs, bowels, bladders and, in some cases, balls aren’t immune to a trash diet either—but it’s the brain, that three pound lump of who knows what, the seat of our consciousness, the living, respiring basis of everything we think, feel, intuit, and know, that we should be concerned with the most. But here, my diligently listening choir, lies the rub. Our “concerngenerators” themselves are the damaged goods! Junk food is biochemically neutering our very ability to feel “concerned” in the first place. Hello? McFly? Anybody home? Think McFly! THINK!

e n i eng

SMART FOOD I GARDEN CULTURE

Smart Foods

I BECAME QUITE USED TO IT, WILLFULLY IGNORING IT EVERY DAY, I EVEN BEGAN TO FIND THOSE PERSISTENT, FL ASHING, RED CAPITAL LETTERS PERVERSELY COMFORTING. Consider, if you are able, the results of an Australian study that fed rats a high-fat, high-sugar diet. These poor little creatures performed worse on special memory tests, and were unable to find objects as well as their healthy-eating rodent counterparts. It’s not just scampering little rodents either. A later study in the American Journal of Clinical Nutrition showed healthy people who ate junk food for five consecutive days performed worse on cognitive tests measuring attention, speed, and mood. Even more recent research has demonstrated that the part of the brain used for learning and memory—the hippocampi—is smaller in people with unhealthy diets. The study, published by researchers at Deakin University, and the Australian National University (ANU) suggested that seniors with unhealthy diets had smaller hippocampi compared with seniors who ate healthier diets.

Incorporate these foods into your diet, and feel a real difference in days!

Walnuts They contain polyphenols, which are believed to improve communication between neurons.

Fish Fish is packed with Omega-3 and Omega-6 fatty acids, which affect the permeability of cell membranes at synapses, aiding interaction between neurotransmitters. This increases your ability to learn and retain information. Choose sustainable, smaller species.

Spinach Boosts blood vessels and flow throughout the body and brain.

Olive Oil More fatty acids and polyphenols.

Mussels Contain amazingly high levels of vitamin B12, which helps insulate your brain cells from the effect of aging.

Dark Chocolate Just a nibble will help your concentration.

Greek Yoghurt Packed full of calcium to help you avoid anxiety and slow thinking.

Asparagus Its high folate content helps ward Now that I’ve hopefully softened up your suggestibility by citing a scientific study or two, it’s time to drag you down my tinfoil-lined rabbit hole. You see—it’s all a big conspiracy orchestrated by a shadowy group of misanthropic globalists, we deferentially call “the elite”. Mass-produced, genetically modified, empty food is increasingly the only affordable option for the masses with the happy side-effect of numbing more than just our powers of critical thought— it’s economically-mandated birth control for the working classes too! Just as the lab rats fed GM corn were rendered

away depression.

Berries Flavanoids in strawberries, blueberries, blackberries, and raspberries (to name just a few!) may help to reduce your risk of Parkinson’s disease thanks to their anti-inflammatory properties.

Turmeric Reportedly the reason why so few Indians suffer from Alzheimer’s compared with their American peers.

GARDENCULTUREMAGAZINE.COM

31

SMART FOOD I GARDEN CULTURE

We can stop playing the victim, and actually start taking responsibility for our own food supply!

sterile after a few generations, many independent scientists and researchers are concerned that the same fate awaits economically disadvantaged North Americans.

This mass extinction of North America’s surplus labor force doesn’t require the costly construction of Nazistyle gas chambers, no matter how many low paid jobs it would create. A cheap, processed food diet is mandated upon those unfortunate individuals whose paychecks aren’t able to stretch to the twelve-dollar tubs of freshly prepared pineapple chunks languishing at the entrance of Whole Foods. Neither can they stomach the cost of the organic, grass-reared, boneless Icelandic lamb winking at them from behind the meat counter. Nay. Forced to hunt and gather in a far less salubrious commercial milieu, the weekly “treat” of the American underclass, if indeed they undertake to cook for themselves at all, is a three-dollar, shrink-wrapped pair of pork tenderloins—the sanitized and insidious product of both the profit-driven, industrial food system, and the ever-dwindling purchasing power of our inflationary, debt-based money supply. We wouldn’t choose to eat part of a pig that’s spent its short life going insane, unable to even turn around in a cage, along with tens of thousands of other wretched creatures stood in a lake of their own excrement—but two tenderloins for three dollars? That’s a no-brainer! (Hopefully you see what I did there.)

There is another way, of course. We can stop playing the victim, and actually start taking responsibility for our own food supply! This naturally requires a certain wherewithal.

It’s far easier just to blame Uncle Sam’s experiment in fascism, and spread our darkest imaginings via Facebook than to actually get our hands dirty. You have to know what you can grow, when to grow it, where to get the seeds, and how to germinate, propagate, and grow them into nutrient-dense, wholesome produce. Furthermore harvesting, preserving, and preparing a homegrown crop or two takes time, experience, and skill. If that sounds intimidating, a positive first step forward is to discover your nearest farmers’ market, and connect with folks who may well be a little further down the path. Hopefully you’ll find some gracious spirits. In any case, search the web for “community gardens” and “community supported agriculture” in your area.

Finally—if you’re still wondering about the fate of my 1992 Subaru Liberty GX, congratulations on a functional hippocampus! Unfortunately, I am unable to sate your curiosity, because I found the corresponding fuse for the warning light, disconnected it, and sold the vehicle to an unsuspecting stranger. 3

The results of the Deakin University / Australian National University (ANU) study are available on BMC Medicine at http:// www.biomedcentral.com/1741-7015/13/215

32

GREEN PRODUCTS I GARDEN CULTURE

cool finds 1

T EC H N O COAST E RS Keeping hardware up-to-date translates to a mountain of redundant computers, but here’s a way to reduce waste while protecting the environment and fine furniture. Cork-backed coasters made from recycled circuit boards - very modern and surprisingly stylish.

Certain to offer some conversation starters at your next gathering. The new party debate... What device was your coaster in during its first life? From Protect The Planet: bit.ly/cb-coasters.

2

BUMBLE BEE SKEP You certainly want these industrious insects near the veggie patch. Bumble bees are better at pollinating tomatoes than any other bee! What better way to invite them into residence than a suitable home close to food? To ensure they move in - get your bee skep situated in early February.

The skep is traditionally made from wicker or straw, but here’s a classy, modern version that will last for many years. It’s not limited to ground placement, and can be used with, or without the base. From Ecotopia: bit.ly/bb-skep.

3

E C O WA L L F LO W E R S A beautiful finish on recycled pallet wood that looks just as smart singly, as they do grouped. Perfect for arid climate natives like cacti, succulents, and air plants that thrive on drier soil.

Plants become art in these compact, earthfriendly wall planters (H/D: 60mm x W: 48mm).

Comes with a no-leak plastic pot, and everything needed for installing. From Factory Twenty One: bit.ly/wall-pots.

4

UPCYCLED PENCILS Everything about these writing utensils makes use of recycled materials except the lead, which probably would make writing a pain.

Start with the packaging, which we toss in the bin straightaway, the 12-pack is bound with rubber bands made from old bicycle tires.

These sharp-thinking ladies in Nepal also replaced the wood with newspapers.

From WIld Weaves: bit.ly/ paper-pencils.

5

MEMORABLE GREETINGS

Make every occasion more meaningful, send a card carrying seeds with your thoughts... be it a million thanks conveyed with 3 pot herb crops, or a cheeky ‘Hot Stuff’ missive packing freshly picked chillis. Big sentiment does come in small packages ;) With 28 choices in all, the range includes birthdays, Christmas, a simple hello - notes that arrive paired with either edible or pollinator crops. By So So Paper Co: bit.ly/seed-cards.3

GARDENCULTUREMAGAZINE.COM

35

O

BY KYLE L. LADENBURGER

THE MAGIC WEED The benefits of sea kelp to humans, animals, and plants alike have proven self evident for many years. Common uses include food, nutrient supplements, skin and hair products, animal feeds, fertilizers, and soil conditioners. However it’s used, kelp has always seemed to improve the subject’s wellbeing. Kelp thrives in specific ocean waters, acting like a filter as it absorbs the vast array of minerals needed for plant and animal growth and well being from the passing waters.

36

KELP IS SO MUCH MORE THAN A FERTILIZER

KELP I GARDEN CULTURE

GROUND KELP MEAL BENEFITS BOTH MICROBIAL LIFE AND PLANTS In addition to all of these essential mineral elements, kelp also contains amino acids, vitamins, and plant growth hormones.

There are several different types of sea kelp used in garden products, such as Nereocystis, or Pacific Bull Kelp, but the species that is most often used in normal applications and in numerous research studies conducted over the last forty years is Ascophyllum nodosum from the north Atlantic, sometimes called Norwegian Sea Kelp.

Common techniques for manufacturing kelp fertilizer include chemical alkaline extraction, cold processing, and simply grinding the dry kelp into coarse granules. Kelp meal, the ground up product isn’t water soluble, but when mixed into a soil or growing medium is beneficial to both microbial life and plant growth alike. Cold processed kelp is a light green liquid with a pleasant marine type smell. It is manufactured without high heat, no chemicals are added, and it has a lower nutrient value than traditional extractions.

Some say that cold processing keeps beneficial substances like amino acids and plant growth hormones in a more plentiful, and plant-available state, but there has been little research to substantiate this claim. Kelp that has gone through the chemical alkaline extraction process is the most common method used, and represents the majority of the kelp products on the market today.

Ascophyllum nodosum grows in the mid-intertidal zone where shifting tides alter the water depth drastically changes daily.

At low tide the kelp falls to the ocean floor, and after the tides return the kelp rises up, erected with the assistance of small air bladders at the base of the fronds near the stem that allow the Regardless of its form, kelp is marketed and sold as a plant kelp to occupy the space closer to the surface where sunlight fertilizer. Which is technically true, based on the fact that it is plentiful. Kelp thrives on an abundant does contain essential plant nutrients.

INCREASES amount of sunshine, and can perform Yet, this classification is a bit misleading, L A T E R A L photosynthesis in its fronds and stems as the available nutrients exist in such BRANCHING... alike. small quantities, with the exception PROMOTING of potassium in certain products, that HEAVIER An important distinction that must be it would not be feasible to solely use F L O W E R I N G made is that kelp is not truly a plant. kelp. The amount needed per applicaLike a plant, it does perform photosyntion would be so high that it wouldn’t thesis to create its own metabolic energy, however kelp does be considered sustainable to either plant growth or a grower’s not take in water and nutrients through roots. Instead, it foliar budget. feeds, absorbing all essential elements needed for development from the surrounding waters. At the base, where the Although kelp contains elemental minerals, and several other roots would be found on a plant, kelp has appendages, called beneficial substances, the most important constituents are the “holdfasts” that anchor them to the ocean floor. natural plant growth hormones, referred to as PGRs (plant growth regulators). The PGRs found in kelp include auxins, Extremely sensitive to the surrounding ecosystem, kelp will gibberellins, and cytokinins, which together control numerous only thrive in areas that are relatively unpolluted, making their aspects of plant growth and development. Growers can utilize presence a good indicator of clean water, and in turn a healthy these in a variety of ways to enhance overall plant health and aquatic ecosystem. This is important because it can grow up to yield.

10 feet tall, and kelp fields make an excellent habitat for ocean ENHANCED SEED GERMINATION life both small and large. Which is why sustainable harvesting methods are a must.

For years, growers have been soaking their seeds for 24 hours in a solution of kelp and water, which results in faster than norHarvesting kelp is done manually or with specialized machinmal germination. The question is: Why does this work? Well, ery. In an effort to be as sustainable as possible, the kelp is this is mainly due to the presence of plant growth regulators harvested at maturity by cutting it about a foot above the called Gibberellins. holdfasts, which allows enough surface area to generate new growth. Ascophyllum nodosum, and other kelp species, can Gibberellins are involved in the creation of enzymes that stimureach maturity and be harvested every 3-4 years. After harlate the breakdown of the seed coat (shell), and the stored provesting, the kelp is rinsed to remove excess sea salts, then teins inside that help feed a sprouting seedling. Sprouting seeds dried, and processed. will create gibberellins on their own, but introducing them at GARDENCULTUREMAGAZINE.COM

37

KELP I GARDEN CULTURE

AIDS ROOT DEVELOPMENT FOR CUTTINGS, SEEDLINGS, AND TRANSPLANTS

such an early stage via the kelp speeds up the process. This is most helpful for seeds that are difficult or slow to germinate, such as basil seeds.

THE OVERALL BENEFITS OF KELP SHOULD NOT BE UNDERSTATED

ROOT DEVELOPMENT BOOSTER The plant growth regulators contained in kelp called Auxins that both initiate and increase root growth. Soaking the end of a cutting in kelp can help stimulate the development of roots due to the naturally occurring auxin Indole-3-acectic acid (IAA). Cloning or rooting gels and solutions contain the synthetic auxins Indole-3-butyric acid (IBA), and Naphthaleneacetic acid (NAA), and are widely used for asexual propagation of numerous species of plants.

Supplying young seedlings with a kelp and water solution can also help to encourage rapid growth, and establishment of the root system. A larger, more robust root system is advantageous for a young plant as it allows the plant to absorb water and nutrients more readily. Similarly, treating transplants of all ages with a kelp and water solution at the time of transplant can reduce “transplant stress”. Allowing faster adjustment to the new rooting environment leads to less plant loss. Continued use throughout a plant’s life cycle often results in a healthy, sprawling root system that can support ample growth.

BUT IT’S FERTILIZER!

That’s what the label says, and it’s found with fertilizers in a shop, but the most important components of the product are the hormones (PGRs), since the elemental nutrient levels are so minimal, and micronutrients are almost nonexistent.

So, if plant growth regulators are such an active component in kelp products, why aren’t they on the label? Regulations, and their accepted wording. Each state’s Department of Agriculture regulates the sale and distribution of fertilizer products.

Plant growth regulators, however, synthetic or natural, fall under EPA regulation, because like pesticides, they enable a grower to manipulate plant responses in a way the normal plant nutrients cannot.

INCREASED FLOWER BUD PRODUCTION

Registering a product through a state agency as a specialty fertilizer is an easier, less costly process compared to obtaining an EPA registration number. Since kelp contains essential plant nutrients, most, if not all, kelp product manufacturers and distributors take the path of least resistance, and register their product as a specialty fertilizer. The only claims allowed for this registration are elemental nutrients, and/or soil/plant amendments. The labels and marketing can’t refer to the most important ingredients - the PGRs.

PGRs work both together and alone, and the concentration of one in comparison to others can result in a host different plant responses. For example, when auxins are in greater concentrations compared to cytokinins root growth is accelerated, and when cytokinins outnumber auxins lateral shoot development is increased. In flowering plants, more shoots will correlate into more flower bud production. Treating a plant transitioning into the flowering stage with kelp via roots or foliar spray can dramatically increase flower bud sites.

The overall benefits of kelp should not be understated, but it’s hugely important to understand as much as we possibly can about the products we use on our gardens. Often the labelstated purpose of a material is not the only way it helps your plants, harvest, or soil. Sometimes the underlying benefits are the most desired. Realizing this will make it easier to understand how we can properly utilize the benefits of kelp for all of the plants we grow. 3 39

WWW.BUDMASTER.CO.UK

WWW.BUDMASTER.FI

WWW.BUDMASTER.NL

RIDDLE I GARDEN CULTURE

BY STEPHEN BROOKES

The NPK Hydroponic Riddle There are five houses that grow five different crops in a row. In each house lives a person with a different nationality. The five owners feed their plants with a certain brand of nutrients, use a certain brand of media, and have different lights. None of the owners have the same nutrient, media, or type of light…

Other facts:

test your logical deduction skills!

1. The Canadian grows strawberries.

2. The Dutch use Hydrotops.

3. The Americans use T5’s.

4. The pumpkin grower is on the immediate left of the broccoli farmer.

5. The pumpkin grower uses LED’s.

6. The owner who uses DWC incorporates Botanicare into their feeding schedule.

7. The tomato grower cultivates in coco.

8. The owner living in the center house has HPS lights.

9. The Australian lives in the first house.

10. The owner who cultivates in soil lives next to the one who uses Canna.

11. The owner who incorporates Ionic lives next to the one who uses coco.

12. The owner who grows in rockwool uses the sun for light.

13. The British grower uses clay pebbles.

14. The Australian lives next to the chili grower.

15. The owner who grows in soil lives next to the one who uses CFL’s to grow. 3

THE QUESTION IS… WHO USES ‘DUTCH PRO’ TO GROW THEIR PRODUCE?

There are no tricks involved, and for solving the problem you only need to make use of logic.

FIND THE CORREC T ANSWER: W W W. B I T. LY/ N P K - R I D D L E

GARDENCULTUREMAGAZINE.COM

41

“A highly anticipated book” MAXIMUM YIELD

“How to become the perfect indoor gardener” THE INDOOR GARDENER

“Outstanding drawings.

I keep my reference copy close at hand” JORGE CERVANTES

“A richly illustrated bible of hydroponic gardening” HYDROPONEAST MAGAZINE

“William Texier is considered one of the most knowledgeable hydroponics experts worldwide” SOILLESS GARDENING

THE WORLDWIDE REFERENCE

Available from Growth Technology, Highlight Horticulture, Hydrofarm, BWGS and major distributors worldwide.

MAMAPUBLISHING.COM

NPK Podcast Live The NPK Podcast delivers the need-to-know information for cultivators without the annoying adverts. Stephen and Thomas don’t pull their punches and talk frankly about the hydroponics industry, as they see it.

The following podcasts are a selection of their favourites from the previous episodes…

• Pest and disease part 1 – In this podcast, Stephen and Thomas talk about pests, specifically spider mites, Thrips, fungus gnats, black fly and pond skaters. The methods to get rid of them, tips to prevent future attacks and how to spot when you have got them.

• An interview with William Texier – A live interview from Barcelona during the grow show, NPK Live is with William Texier discussing growing plants, his top tips for all cultivators and a chat about his book. A top interview with one of the industry’s most knowledgeable cultivators.

• Nutriculture grow systems – In this week’s podcast, Bill and Craig from Nutriculture talk about the systems they produce and more importantly how to use them. Plus, a great insight into which systems might suit different growing styles. A must-listen for the system grower • Nutrients – In this no-holds barred podcast, Stephen and Thomas give their opinions on hydroponic nutrients, dubious marketing claims and bad science in hydroponic tests.

The NPK Live podcast is released every Sunday at 12pm GMT on iTunes, the NPK website and a host of other podcast platforms. http://tinyurl.com/NPKHydroponics http://tinyurl.com/NPKLive

Enjoy!

STEPHEN BROOKES – NPK TECHNOLOGY

Without the 4 Nitrogen atoms in the chlorophyll molecule, there would be no photosynthesis

What is…

nitrogen?

“England and all civilised nations stand in deadly peril of not having enough to eat. As mouths multiply, food resources dwindle. Land is a limited quantity, and the land that will grow wheat is absolutely dependent on difficult and capricious natural phenomena... I hope to point a way out of the colossal dilemma. It is the chemist who must come to the rescue of the threatened communities. It is through the laboratory that starvation may ultimately be turned into plenty...The fixation of atmospheric nitrogen is one of the great discoveries, awaiting the genius of chemists.”

The “genius of chemists”, was the German Fritz Haber, who discovered how to artificially fix Nitrogen (N), along with the industrial engineer Carl Bosch, who scaled up the process so it could be accomplished on an industrial scale. The process came to be known as the Haber-Bosch process, producing over half a billion tons of artificial manure every year, requiring a huge 5% of the world’s natural gas to do so. The Haber-Bosch process sustains more than a third of the world’s food production, so it transpired that Sir William Crookes was absolutely right in his prediction on the importance of Nitrogen fixation in the agriculture industry.

Nitrogen The 7th element of the periodic table, it is an odourless, colourless, and mostly inert gas, and continues to be colourless and odourless at a liquid state. Nitrogen makes up around 78% of the air you breathe, and is present in all living things, including the human body and plants.

44

Sir William Crookes – 1898

The importance of Nitrogen Nitrogen is found in both organic and inorganic forms in the plant. It combines with Carbon, Hydrogen, and Oxygen (sometimes with Sulphur) to form amino acids, amino enzymes, nucleic acids, chlorophyll, alkaloids, and purine bases.

To emphasise the importance here, amino acids are the structural building blocks of proteins, so without Nitrogen there are no amino acids, and no amino acids means no life.

Furthermore, Nitrogen has an essential role as a base element for nucleotide molecules, the building blocks of DNA and RNA, which are the blueprints and translators of the genetic code respectively. Lastly, without the 4 Nitrogen atoms in the chlorophyll molecule (C55H72MgN4O5), there would be no photosynthesis. This also helps to explain why a Nitrogen deficient plant turns yellow, due to the lack of chlorophyll’s green pigment… Nitrogen is kind of important when growing plants.

NITROGEN I GARDEN CULTURE

Nitrogen makes up around 78% of the air you breathe, and is present in all living things

Nitrogen and Metabolism

Plants absorb Nitrogen as either NO3- (Nitrate), or NH4+ (Ammonium) ions. Both of these ions supply Nitrogen to the plant, but they will have big differences within the plant’s metabolic pathways. Nitrate for example, is absorbed by the plant slowly, and as we mentioned before provides the materials needed for the production of amino acids and other structures. In comparison, ammonia is A typical Nitrogen absorbed rapidly, and can cause problems such as deficiency will manifest toxicity if present in high concentrations.

itself within the plant as a pale green coloring on the lower leaves

The uptake of NO3- stimulates the uptake of cations (Positively charged ions), however, chloride (Cl), and hydroxyl (OH-) anions (Negatively charged ions) restrict NO3- anion uptake. This could be an explanation for why some cultivators choose to let their water stand for 24 hours before watering, which allows the chlorine to evaporate off, or use a water filter. This practice has never been studied scientifically, so we cannot say for certain that the cultivator will reap any apparent benefits other than the water reaching room temperature to reduce shock from cold/hot watering.

It should be worth noting that over watering can also look like Nitrogen deficiency to an untrained eye, as it also manifests itself as a yellowing of the plant, the cause of this is a lack of oxygen at the root system.

Nitrogen excess makes the leaves a very dark green colour, any new growth will be succulent, and the plant is very susceptible to disease, insect infestation, and drought stress. Lodging, blossom end rot (BER), and lack of fruit set can often occur as well.

Spotting Nitrogen Issues A typical Nitrogen deficiency will manifest itself within the plant as a pale green coloring on the lower leaves, moving upwards through the plant as the deficiency becomes worse, eventually turning brown and dying. Plant growth is slow and maturation occurs earlier than normal with possible stunted growth. Nitrogen is a highly mobile element within a plant, therefore when a deficiency does occur, Nitrogen can translocate to the parts of the plant that require it the most, i.e. the new shoots and younger parts of the plant. This explains why yellowing occurs from the bottom upwards.

The importance of Nitrogen cannot be understated, it is a fundamental part of the growth, and an important part of the flowering stage in a plant’s life cycle. However, with a good nutrient formulation, and sound cultivation practice, it should be a very rare occurrence that a Nitrogen deficiency or excess occurs in the grow room.

Thanks for reading the second installment of ‘What is…’, hopefully I’ve added a little insight into the 5th most abundant element in the universe. 3

GARDENCULTUREMAGAZINE.COM

45

: s t s e P n ’ F

BY CHRIS BOND

Both adult and immature mites can do extensive damage to plants

46

MITES I GARDEN CULTURE

Few pests bother the indoor gardener like spider mites. They seemingly appear from nowhere, and spread havoc exponentially. Knowing how to control your growing environment is one of the best ways to control these pests. Few pests bother the indoor gardener like spider mites. They seemingly appear from nowhere, and spread havoc exponentially. Knowing how to control your growing environment is one of the best ways to control these pests.

SPIDER MITES EVOLVE FROM EGG TO ADULT IN AS LITTLE AS FIVE DAYS

Mite Biology Spider mites are small, sucking pests that can be difficult to see without the aid of magnification. They are usually brown or translucent, yellow or green in color, sometimes red, and are as small as 1/50th of an inch (.5 mm). A hand lens of at least 10X magnification is usually required to positively identify spider mites. Both the adult mite, and their immature progeny can do extensive damage to plants. The most common species encountered by the indoor or home gardener is the two-spotted spider mite, Tetranychus urticae Koch. They are known to affect well over 200 species of garden, field, greenhouse, and hydroponic crops.

The life cycle of spider mites is very rapid. It can vary some between species, and varies with temperature, but with all mites, it includes the egg stage, the larval stage, two nymphal stages (protonymph and deutonymph), and the adult stage. At about 80째F, (26.7째C) spider mites evolve from egg to adult in as little as five days. It can take several weeks in cooler temperatures. When unchecked, there are many generations of spider mites per year. Adult females live for up to one month, and can lay several hundred eggs during that time.

Two-spotted spider mite under magnification.

Photograph by Eric Erbe, USDA. Digital colorization by Chris Pooley, USDA.

Symptoms Mites do their damage to plants by sucking out the sap from the leaves. Their pattern is to start on the undersides of leaves, and then move from leaf to leaf, as they drain the plant of its vital liquid, and as the mite populations continue to explode. Damage to plants from mites appears as yellow-speckled or mottled leaves, appearing on the undersides of leaves or needles first, but quickly evident on the tops as well. If unchecked, the leaves eventually turn yellow or brown, and the entire plant will die due to its inability to photosynthesize.

Typical leaf damage from the sap-sucking of the two-spotted spider mite, Tetranychus urticae Koch.

Photograph by University of Florida.

GARDENCULTUREMAGAZINE.COM

47

Prevention Mites are often inadvertently spread by people. An innocent visit to a local garden center can mean returning to your grow area with some unwelcome hitchhikers. If possible, change your clothing before entering your garden spaces, and make sure to sanitize your hands thoroughly before and after tending to your plants. They can also travel on a slight Webbing produced by breeze on their web. They do overwinter outside under two-spotted spider mites, leaf litter and other organic debris, so it is possible that an Tetranychus urticae Koch.

Photograph by University of Florida. otherwise clean growing area, can quickly become a host site for a spider mite outbreak when it warms up in the spring.

Their natural distribution is throughout Europe Like spiders, mites spin webs. and North America, ranging from temperate They travel about on their MITE DAMAGE zones through the subtropics. They can survive network of fine webbing, and FIRST APPEARS through even the harsh Canadian winters in the often this is visible after mite ON THE populations start to swell. microclimates created near homes and buildings.

UNDERSIDE OF LEAVES

To test for the presence of spider mites, place a sheet of white paper under the leaves of your plants, and tap or shake the leaves. If there are mites present, some should fall on the paper and appear as moving specks across the paper. Black specks of frass (fecal material), amber-colored eggs, and white skin-castings are another sign that mites are present.

Down to Earth Kent Ltd

Mites do best in warm and dry conditions. If possible, your grow area should be kept as humid as possible, or at least as much as your indoor plants and crops can tolerate. This can be done by periodically misting your plants, undersides too, with a spray bottle. Make sure also that you do not let your soil get too dry between waterings either, as this can promote the spread of mites as well.

Tel: +44(0)1233500633 Email: info@downtoearthkent.co.uk

www.downtoearthkent.co.uk

MITES I GARDEN CULTURE

MITES DO BEST IN WARM AND DRY CONDITIONS

Anytime that you intend to introduce new plants to your growing areas, they should be temporarily quarantined to make sure they are not housing a mite population. Further prevention includes selecting species of plants that are known to be less susceptible to mite damage.

Control Spider mites are not true insects. For this reason alone, many gardeners fail to control them with widely commercial insecticides. They are 8-legged arachnids, and can only be controlled with miticides, or those formulations and controls which are meant to kill or disrupt the biological activities of spiders or ticks. If possible, take your plants outside to treat them, so that you are not just knocking the mites off, only to return to their original host, or to move on to another. If this is not practical, the same effect can be achieved by taking your plants into the bathtub to treat them so that any mites knocked loose simply disappear down the drain. This option, though should not be used with chemical insecticides, as they will eventually find their way into the water supply.

Regardless of your choice for organic, natural, or synthetic control, it is wise to treat only a small area of an infected plant first to check for phytotoxicity, which causes damage to the plant by the remedy. Some formulations can actually burn leaves of sensitive plants, so it’s best to read the entire label to make sure that the plant or crop that you wish to treat is appropriate for the pesticide selected.

Some natural or organic remedies for control include using a forceful stream of water to dislodge them from your plants, applying insecticidal soap, or horticultural oils (these should be at about 2% oil to prevent foliage burn). Homemade insecticidal soaps can be concocted with 2 teaspoons (10 mL) of a mild dish soap mixed with a gallon (3.8 L) of slightly warm water. A disposable paint brush or toothbrush can be used to spread the soap onto the leaves, ensuring contact with the mites, as well all knocking them off. Neem oil is an effective pesticide that also has fungicidal properties as well. Soaps and oils should be applied about once per week until no further damage is noted. As they hide out mostly on the undersides of leaves, it is important to make sure that both sides of the leaves are treated. Sulfur can be an ingredient in both natural and synthetic mite control. It can be found in spray or dust form.

Chemical control includes miticides or acaricides (another name for pesticides that kill mites) containing bifenthrin, abamectin, bifenazate, hexythiazox, or spiromesifen as their active ingredients. Just like with natural controls, it is important to treat the undersides of the leaves, unless the pesticide is trans-laminar, meaning that a surface treatment will migrate through the leaf, and will kill the mites or insects on its underside.

It should be noted that the reason spider mites are such a bane to growers is their high adaptability to synthetic pesticides.

Those that are not killed by a pesticide due to their genetic resistance pass those genes on, and before long, chemical pesticides are rendered useless, because the mites are unaffected by them.

Pesticide applications also inadvertently kill the beneficial insects that help to control the populations of spider mites. A typical scenario is that repeated applications of any chemical pesticides results in an environment where there are few to no natural enemies of spider mites, and a population of “super” spider mites that are not susceptible to the active ingredient in the pesticide develops. For these reasons, no one method should be relied on alone, or for any extended period of time.

Those formulations that are effective on the adult spider mite, are not typically effective on penetrating the egg, and are not always useful in killing the larval or nymph stage as well. This is one of the reasons that multiple applications of pesticides are generally needed for effective control.

Predatory mites such as Phytoseiulus persimilis, and Amblyseius californicus can be released in your grow areas to kill spider mites. These “good guys” do not bite people, and will stay put where you release them. When they have done their job, they too will die, as there is no more food source for them.

Summary Spider mites can spread easily by the slightest breeze, or by traveling unbeknownst on clothing. They reproduce quickly in warm and dry climates, and are difficult to control with conventional insecticides. The most effective way to protect yourself from an outbreak is through sanitation, and vigilant monitoring. Action should be taken at the first sight of spider mite damage, and should not be done with half-measures.

When possible, dispose of affected plants before the mites get a chance to spread to others. 3 GARDENCULTUREMAGAZINE.COM

49

s ’ o h W g n i w o r G t a h W Glebeland City Growers/glebelandcitygrowers.co.uk

Where

1) Manchester, Lancashire

Veg People

This co-op empowers sustainable, organic food production, provides chefs and shops with uber-fresh seasonal produce, and is re-invigorating the local economy in one smooth movement. Each ecologically managed farm’s specialized offering provides for an eager market through Manchester Veg People. Much of it is picked to order, within 50 miles of the city centre, if not within the city itself - like the urban farm, Glebeland City Growers pictured here.

They do more than connect buyers with local growers, they also ensure they receive fair prices for their efforts, thereby making the availability of truly fresh, high quality, healthy food a sound part of the community economy and sustenance. The world could use more of such activity!

But what are they growing? Small, organic farmers feeding local people through a very replicable model of changing the food we eat, and keeps the proceeds in the community. Learn more: bit.ly/veg-people.

Educating Tomorrow’s Growers It began with outfitting a science greenhouse to allow Belvedere College S. J. students to learn about food production using hydroponics and aquaponics. This new project launched during the 2014-2015 academic year, and now includes a rooftop farm on the other side of the campus. Their mentor and collaborator is Urban Farm’s Andrew Douglas, of the Boxty House Potato Project, also in downtown Dublin... so, it’s no surprise that the college farm’s rooftop space includes 180 potato containers using the same setup. The rooftop is also home to an NFT system, and bees.

The Dublin Honey Project installed 4 hives as part of their postcode honey initiative.

It’s an education in sustainability and alternatives at GROWlab covering vertical growing, rainwater catchment, 50

Belvedere Urban Farm Blog

2) Dublin, Ireland

wind energy, worm composting, solar energy, advanced LED lighting, and environmental control. They’re farming Rainbow Trout too, with guidance from Inland Fisheries. The farm is active year around, the students have a forum to help them grow at home, and they maintain a blog, and a YouTube channel.

That’s just a peek at this model urban farming lab. Learn more: bit.ly/dublin-growlab.

WHAT’S GROWING ON I GARDEN CULTURE

“Breakfast via Hello! Magazine

3) Salford, Lancashire

Growing on Chapel Street Home of Honest Coffee is growing all manner of things from creativity to community to hyper-local food. Funded by 155 Kickstarter supporters and grants from the Royal Society of Arts & Future Artists, this initiative seeks to provide Salford with affordable space to create, and refuel. As the name suggests, there is a café with locally roasted coffee and a menu that features fresh ingredients sourced within 5 miles of the door. Not to mention that all profits at year’s end are to be given back to the community via grants to local football clubs, community groups, artists and startups.

closer to the kitchen with the installation of HydroGarden’s VydroFarm hydroponic system, which will provide greens and herbs year-round, in its basement. Hyper-local indeed.

Reinventing the world isn’t that difficult. Obviously, all we need is creative thinking, sound planning, and elbow grease.

Learn more: bit.ly/honest-coffee.

A community inspired collaboration with Refarming Ltd and Co-operative Mutual Solutions, now brings the food even

4) City of Bristol

Credit: “Bristol Pos

Earth Champions Elect

in the UK

Being voted Outstanding by the people of Bristol in the Water segment of Earth Champions 2015 is definitely a feather in the cap of startup urban box farm, Grow Bristol CIC. They are involved with Incredible Edible Bristol, and identified on the Urban Food Growing Trail map in their present location at the Machine Shed near Temple Meads station. Here they’ve set up a demonstration model to introduce Bristolians to sustainable, closedloop system food production. This repurposed shipping container is just the first step in Dermot O’Regan and Peter Whiting’s plans.

The team’s goal is to grow vegetables and fresh fish for the local market, and expand the scale of their operation.

Whether or not they are the Water Earth Champions in Bristol remains to be seen, winners will not be announced until spring, but they are the first aquaponic urban farm to setup in the city.

Blazing a trail into a better future. It’s happening everywhere. Learn more: growbristol.co.uk. 3

GARDENCULTUREMAGAZINE.COM

51

040515

SALES @ ATAMI.COM WWW.ATAMI.COM WWW.BLOOMBASTIC.COM

OPINION PIECE BY THEO TEKSTRA MARKETING MANAGER GAVITA HOLLAND BV

COLUMN I GARDEN CULTURE

YOU KNOW WHAT GRINDS MY GEARS?

The Dunning-Kruger Effect In this columns Theo Tekstra discusses observations in the indoor garden culture. There is sometimes so much urban legend, and so little science in this industry. It is time to “myth bust” some of these urban legends, and have a fresh breeze move through the industry.

I am sure you recognize this: You learn something new that sounds so incredibly logical, that suddenly a lot of pieces fall into place. It is like an epiphany, and all you wish to do is share this with your peers as you have found the solution.

You become a prophet, a savior, and you spread the word.

I know I have been there many times. I don’t know if this has anything to do with age, but I do know that I have become a lot more reluctant about “spreading the word” as I got a bit older.

Enter the Dunning-Kruger Effect In 1999, David Dunning and Justin Kruger of Cornell University observed this effect and published the paper: Unskilled and unaware of it: How difficulties in recognizing one’s own incompetence lead to inflated self-assessments.”

Do not think that this only applies to “stupid” people, on the contrary! If you are really smart, you might assume that your competence in some fields automatically makes you a master in other fields in which you are less competent.

The result is the same, though. The following is not a representation of the original results, but it is a somewhat exaggerated illustration that gives you an idea of the effect:

The most confident people might not be the most reliable!

The first peak is also referred to as “mount stupid”: you think you know a lot, and are extremely confident in expressing that knowledge, but in reality you know nothing. You see that a lot in YouTube videos, because you need confidence to be able to present a convincing story. Remember guys, not all that is published on the internet is true!

So, how does this relate to hydroponics might you ask?

Well, think of it this way: if the person you are talking to in a sales situation just quit his job in office supplies, and is now bringing you the gospel of new grow technology, you might want to check the facts. The most confident sales people might not be the most reliable. The strongest statements might not be the whole story. Specifically, in an upcoming industry such as ours, this can be a real problem.

Now, where are you on the Dunning-Kruger scale when it comes to lighting? I am pretty confident in my lighting competence, having worked in this industry for many years, and still I do not pretend to know everything, but I do know a lot. So, specifically for you guys I put this test together, which is published on the Garden Culture website. Answer the questions, and then read the answers. It’s anonymous, we will not hold it against you ;). 3 Test Your Knowedge: www.bit.ly/DK-test.

GARDENCULTUREMAGAZINE.COM

53

BY STEPHEN BROOKES - NPK TECHNOLOGY

the

method 54

How to conduct a proper scientific enquiry?

SCIENCE I GARDEN CULTURE

The hydroponics industry - along with every other industry where competition’s fierce - is rife with false information, grand marketing claims, and questionable testing procedures. This either serves the manufacturers who can easily sell their products to a misinformed audience, or it produces less than reliable results from researchers who may not understand how to use proper scientific process to achieve reliable data.

This article will hopefully provide some clarity to proceedings by providing an insight into how to conduct a proper scientific enquiry that gives reliable data, which can be improved upon by others. When manufacturers, wholesalers, shops, and customers have access to these studies, they can all make informed decisions as to what is best for them. This will help us rid our beloved industry of the profiteers looking to make a quick buck with no interest in producing great products.

The basic outline of a scientific enquiry: 1 2

3 4

5 6 7

Identify the area you want to investigate, and define the question you wish to answer.

Research this area with a comprehensive literature review (Google scholar, books, hydroponics magazines, established websites).* Remember to reference everything that you put into the literature review, and throughout the article. Plagiarism is wrong, and damages credibility.

Create a hypothesis based on what has been learned in the literature review.

Design an experiment to make the hypothesis testable/ falsifiable, and a method for collecting the data. This is where we increase validity by taking into account all the potential variables and biases.

• The method of conducting the experiment is written down step by step, this is your scientific procedure.

• Equipment list is written down to help others replicate the study exactly.

• Conduct the experiment exactly as laid out in the experimental procedure. If you make any changes mid-experiment, make the changes to your experimental procedure.

Results – Organise your data to see if it supports, or rejects your hypothesis.

Conclusions – Make sure your conclusions are consistent with the data.

Abstract – Although the abstract goes at the beginning, it’s written at the end. It’s a 250 word long summary of the whole experiment.

*Academic literature reviews do not generally accept websites or

a proper scientific enquiry that gives reliable data Scientific procedure: Why should we bother using a scientific method?

The scientific method according to Richard Feynman, is about taking a guess about the world based on observations, and then testing that guess (hypothesis). If that guess disagrees with experiment, it’s wrong! It doesn’t matter how clever you are, how beautiful your guess is, or if your name is Einstein, if it disagrees with experiment, it’s wrong. If the hydroponics industry conducts it’s testing procedures according to scientific method, making its research transparent and published, it can be reviewed by peers to see if it’s valid, and then re-tested to see if the results are reliable.

As Carl Sagan says, “Somewhere, something incredible is waiting to be known.”

Conducting a scientific enquiry: Start with the hypothesis.

A question is created that is testable by scientific method.

There should be two possible hypotheses, or scenarios, that can be deduced from this question: the null hypothesis (H0), and the alternative hypothesis (H1). To put it simply, the null hypothesis is the opposite of the alternative hypothesis.

The researcher tries to disprove, reject, or nullify the H0, which is usually the common view of something, whilst the alternative hypothesis is what the researcher really thinks will happen. An example is as follows; H1 (Alternate Hypothesis): Tomato plants exhibit a higher rate of growth when planted in compost rather than soil.

magazines as a part of a literature review, but because our current evidence base (in hydroponics) is small, I think it acceptable to visit established websites/magazines to see what has already been done, and

H0 (Null Hypothesis): Tomato plants do not exhibit a higher rate of growth when planted in compost rather than soil.

what the results were.

GARDENCULTUREMAGAZINE.COM

55

The ORIGINAL

Patented/Patents Pending

®

AVENGER GLASS COATED 97% REFLECTIVE ALUMINIUM

ENFORCER

86% REFLECTIVE ANODIZED ALUMINIUM

DEFENDER

HIGHLY REFLECTIVE, TITANIUM WHITE, POWDER COATED H18 ALUMINIUM

MEDIUM - 400w to 600w lamps

LARGE - 1000w or twin 600w lamps

Increase yield per lamp up to 50%.

Twice the power and efficiency of most other reflectors.

Increase the growing area under each lamp by up to 75%.

Sold in 25 countries across 4 continents, Adjust-A-Wings are the “reflectors of choice” for many of the world’s top growers.

The “Adjustable Light Spread” allows growers to create ideal lighting conditions across all stages of plant growth for increased vitality, health and yield.

www.adjustawings.com

INCREASE YIELD!

www.youtube.com/watch?v=O0AJwCpeEW8

REDUCE HEAT!

SAVE POWER!

The Adjust-A-Wings novel design features are protected by a range of international patents registered, accepted and pending with the I.P.O.

Please report all illegal and inferior copies to info@hygro-int.com

Manufactured by Hygro International Pty Ltd under licence from Hygrotech Pty Ltd Australia

SCIENCE I GARDEN CULTURE

When constructing a hypothesis remember to be as accurate as possible, for example a null hypothesis such as “Tomato plants show no difference in growth rates when planted in compost rather than soil”, is flawed. If the plants grow slower than in soil, the hypothesis is not supported or disproven, and the experiment is invalid.

a valid scientific study includes determinate variables, indeterminable variables, and constant variables

Furthermore, avoiding conceptual variables is vital (also called fuzzy logic), whereby the hypothesis is vague, lacks clarity, and is only partially true, an example being;

“Plants grow quicker when fertilized.”

What is meant by plants? Are they from seed or clones, what type of plant is it, and what variety? There are millions of plants, specify which one is being tested.

How is ‘growth’ defined? Is it weight, height, foliar mass?

How is ‘quicker’ defined? What units are being used, what method of measuring is used, and how often is growth being measured? Is it over 1 month, or 1 year? Frequency of measuring also depends on the length of the study. If it’s over 1 year, measuring every 5 hours is impractical.

constant, so that conditions are the same throughout. This is how the variables look in our example;

The independent variable (what we change) is the fertilizer X, we then measure the dependent variable (what changes as a result of the independent variable), which in this case would be the plant height and mass. Lastly, our constant variables (everything we keep constant), such as type and amount of soil/compost, pot size, plant genetics, amount of water and light. There will be many more variables, and that’s one of the most important jobs, to identify all of the variables, and take them into account when planning the scientific procedure.

Experimental Bias. Once the hypotheses have been finalised, the researcher looks at potential biases that could affect the reliability of the data. There are potentially dozens of bias that can creep into a study. It is the job of the researcher to assess what bias could affect the study, and either correct them, or write them down to be mentioned in the conclusion.

The hypothesis statement. It is imperative to be accurate in your hypothesis statement, so that readers know exactly what they are reading about.

A good hypothesis statement would be as follows;

A longitudinal 12-month study to assess increased growth rates of Purple Haze tomatoes with increasing dosages of fertilizer X.

If it disagrees with experiment, it’s wrong!

Once a hypothesis has been established, it’s time to test it in a fair manner that makes the results dependable, and replicable.

A fair test will only change one variable at a time, this is called your independent variable.

You will be observing the changes that the independent variable provides, and this is your dependent variable (what happens in the experiment due to the factors you have changed). Lastly, we have our constant variables, the parts we wish to keep

GARDENCULTUREMAGAZINE.COM

57

The biggest mobile climate room on the market The all new Mammoth EliteHC 900L 9.0m x 4.5m x 2.4m / 40.5 square meters Heavy Duty Frame - 100% Waterproof Floor - Modular

2.4m 9m

4.5

m

Contact us for your preferred reseller

mammothtents.nl

mammoth tents pioneers in mobile rooms

original manufacturer - designed in holland

J.P. Poelstraat 1, 1483 G.C. De Rijp, The Netherlands Tel:+31 299 675711 Fax:+31 299 671393 E-mail: info@kj-products.com Web: www.kj-products.com

SCIENCE I GARDEN CULTURE

The following is a short list of common biases: •

•

•

•

•

Experimental error – This is a result of not taking into account all possible variables, usually when a proper plan has not been written down and the researcher has missed an important variable. Although this means the results are less credible, mentioning it in the conclusion allows future research to improve on the results.

Inclusive bias – Products that are being tested were ‘available’, or have been sent by a manufacturer. A lot of manufacturers are reluctant to send out their products for testing, because of the lack of scientific rigor, or incorrect conclusions which may put them in a bad light.

There is no immediate problem with this, just as long as the researcher doesn’t say product X is the best on the market, when products Y and Z didn’t get tested.

Measurement bias – This arises from an error in the data collection, and the measuring process. If the instrument measuring the data is faulty, or incorrectly calibrated this will lead to inaccurate data. Properly calibrated equipment, and multiple testing/measurement will decrease measurement bias.

Researcher bias – Possibly the hardest to control without blinding the researcher. It is very hard to be completely unbiased towards products we are testing, as humans always have a slight affinity towards one product or idea than another, and this can impact the results. For example, testing two fertilizers (X and Y), the researcher has used both before, and had good results with X, but not with Y. When fertiliser Y outperforms fertiliser X in the study, the researcher may do a rerun of the experiment to see why the data doesn’t hold true with his current belief, adding to his researcher bias. He may have already biased the experiment by spending more time with the plants using the fertilizer he likes; it all adds up to unreliable data. In order to control this, the researcher blinds the experiment to himself, by putting both fertilizers in the same type of bottles, and labeling them fertiliser A and fertiliser B, researcher number 2 will then fill the bottles with the fertilisers. The true identity of the fertiliser doesn’t come out until after all the data has been collected.

Confirmation bias – This occurs when the researcher looks at the results from their research, and tries to fit them around pre-existing expectations and hypotheses.

An example of this could be as follows; the data may show that fertiliser X grew a taller plant, but fertiliser Y produced more foliage… The researcher in their subliminal or conscious bias may choose to focus on the tall growth of favoured fertiliser X, and not mention the abundance of foliage from fertiliser Y.

a hypothesis avoiding conceptual variables is vital… otherwise it’s fuzzy logic The above list is not exhaustive, there are too many to list in this one article, but it is essential for any researcher to keep these points in mind when planning and conducting any experiment. It is also important for people reading scientific articles to consider where bias may have affected a study so that they can assess the reliability of the experiment.

Before the experiment is carried out, the researcher will write down an exact list of the equipment they have used, which allows exact replication of the test to be carried out by others.

The researcher will decide how many times to carry out the experiment to increase reliability (An experiment on 100 plants holds more weight than a test done on 10). Lastly, the researcher will decide on whether to use a control group to act as a baseline. In our example of fertiliser and plant growth, the control group could be a plant grown using plain tap water or a very low concentration of fertilizer; all other tests are compared against this baseline to measure increased or decreased growth.

When variables and bias have all been accounted for, the experimental procedure has been written down step by step, and a list of equipment has been made, it’s time to conduct the experiment and record the data. Crunch time!

It is important to remember that things go wrong during experiments. Don’t ignore problems, and carry on regardless.

A good researcher will write down exactly what went wrong, and include it in their conclusion as a point of error that could have affected results. Furthermore, a scientist that becomes fixated on proving a research hypothesis loses their impartiality and credibility. Be impartial, and your credibility increases.

test the hypothesis in a fair manner that makes the results dependable, and replicable GARDENCULTUREMAGAZINE.COM

59

The Essential Mix

www.agriculturalorganics.com ph: +44 20 7979 2030 Available at all leading hydroponic stores.

bloom_UK_gardenculture_ad_122015.pdf

SCIENCE I GARDEN CULTURE

reading scientific articles... consider where bias may have affected a study to assess the reliability of the experiment

1 21/12/2015 2:10 pm

Conclusions:

Summary:

For any research project, drawing conclusions is the final, and most important part of the process. Success or failure is not a measure of whether a hypothesis is accepted or refuted, because both results still advance scientific knowledge. The only time an experiment is a failure is when results are reached through poor experimental design, or flaws in the reasoning process, thereby invalidating the results! So, as long as the research process is robust and well designed, then the findings are sound, and the drawing of conclusions can begin.

If you’ve made it this far, well done. This article is literally just the basics, and we could write a whole book on different research techniques, but hopefully this can act as a starting point for all future tests to be based on, and as an industry, we can strive towards good science moving forward through false marketing and bad science. I would love to see an increase in experiments being done, and more importantly, people conducting experiments with scientific rigor.

A researcher should summarise what they believe has been learned, and assess the strength of the hypothesis.

Furthermore, even if all biases and variables have been accounted for, the data can still be misrepresented in the conclusion. A good conclusion for a first or second time test might finish as follows; “The data showed that product X outperformed product Y by a margin of _ _ _. However, due to variable A and variable B, the data may not be representative. We therefore recommend that further testing is needed, and they should take into account variable A and B.” Also, if you feel the results have been biased in any way, you should mention them in the conclusion. It is far better for you to pick up on the shortcomings of the test than anyone else to pick the test apart, it gives you real credibility, even if the test is flawed.

Hypotheses are rarely proved; it is better practice to use terms such as supported or verified. This is because very few experiments give clear cut results, and testing usually uncovers more questions to be answered than actual answers, but with each test, we get that little bit more confident that what we believe to be true, is in fact so.

“If you’re not willing to learn, no one can help you. If you’re determined to learn, no one can stop you.” 3

Success or failure is not a measure of whether a hypothesis is hypothesis accepted or accepted refuted

GARDENCULTUREMAGAZINE.COM

61

nutrients pass through the cuticle on some plants

BY KYLE L. LADENBURGER

eeding Foliar FFeeding

62

FOLIAR FEEDING I GARDEN CULTURE

The application of liquid fertilizers to foliage, commonly referred to as foliar feeding, has been a topic of heavy debate for over the last 50 plus years. This is the method of spraying plant-available liquid nutrients on the above ground portions of the plant, the leaves and stems, in an effort to positively affect its health and overall nutritional status. Some see it as a way to maximize plant development, while others view it as a misguided means of obtaining a quick fix to a more systemic problem. This, my friends, is where the enthralling debate begins, but at not all where it ends.

The spotlight on foliar feeding began to truly shine back in the early 1950’s when Dr. H.B. Tuckey, head of the Department of Horticulture at Michigan State University, and his colleague Dr. S.H. Wittwer began a series of greenhouse laboratory studies. Their focus was to find efficacy in the method of foliar feeding. Utilizing radioactive isotopes of known elemental plant minerals, the men applied solutions containing the minerals onto the leaves and stems of the test plants.

completely understood process, some basic principles do apply. Stomata are generally opened during periods of high light intensity when photosynthesis occurs at a faster rate and more carbon dioxide is desired. They will also tend to be open during times of high humidity, when water is plentiful, and the plant is less concerned about conservation. However, the stomata will remain closed to conserve available water when temperatures are exceedingly hot, generally above 80° F (26.6ºC), or if it has very dry conditions.

MINER ALS ENTER INTO THE PL ANT, AND SOME E VEN TR ANSLOCATE THROUGHOUT

After the applications were in place they measured with a Geiger counter to track whether the mineral isotopes not only entered the plant, but if they moved from one part of the plant to another, a process called translocation. Through their testing they found that the minerals indeed entered into the plant, and certain minerals were even translocated throughout the plant. The results of these studies sparked a new era of testing, the adoption of new practices by growers, and the beginning of a serious debate that is still relevant to this day.

So, how does foliar feeding work? Elemental plant nutrients and water are able to enter into a plant primarily through the stomata, but can also pass through the cuticle on some plants, which is a thin waxy layer on the outside of leaves and stems. The stomata are tiny, pore-like apparatuses that open and close to allow oxygen and water vapor to exit the plant (transpiration), and to allow carbon dioxide to enter, where it is a driving force of photosynthesis. The word stomata stems from the Greek word ‘stoma’, meaning mouth, and the opening and closing is regulated by task specific cells, appropriately referred to as “guard cells”.

Opening and closing of stomata is directly affected by certain environmental conditions, and though it is not a

This type of self regulation is of vital importance for a plants’ survival, and it is important that a grower understand this if they wish to foliar feed effectively.

When foliar feeding in the hot summer months, it is recommended to do so in the morning or early evening, when the sun is out, but the weather is relatively cool.

For best results, mix the fertilizer solution at half rate or less. Doing so will reduce the overall concentration of elemental mineral ions, possibly increasing the likelihood of them entering into the stomata.

Unlike with soil applications, the ideal pH for foliar feeding is right around 7.0, which is known as a neutral pH. Particle size plays a huge role in a successful foliar application so use a sprayer with the finest mist available. Spray both the tops and bottoms of the leaves as well as the stems.

Adding a surfactant or wetting agent is also beneficial, as water molecules have a high surface tension rate, and tend to “heap” together and bead up on the leaf’s surface. A wetting agent will lower the surface tension, allowing the solution to thin and spread out more evenly.

The main mode of entry into a plant for water and elemental mineral nutrients is through the root system. From time to time, imbalances and undesired interactions between

GARDENCULTUREMAGAZINE.COM

63

FOLIAR FEEDING I GARDEN CULTURE

ONLY A VIABLE METHOD WHEN DEALING WITH MICRONUTRIENT D EFICIENCIES

PARTICLE SIZE PL AYS A HUGE ROLE IN A SUCCESSFUL FOLIAR APPLICATION

nutrients, often micronutrients, can occur in the rooting medium effectively rendering them unavailable to the roots, a situation referred to as “nutrient lock-out”.

This is a common occurrence in soils that are poorly managed and excessively fertilized. When the nutrients become locked up with other elements, and even certain soil particles, it can lead to nutrient deficiencies, even though they are technically still in the rooting medium.

If the nutrient is unable to be obtained through the traditional mode of entry, or if a nutrient deficiency occurs for any reason, foliar feeding can serve as an alternative method for providing the nutrient to the needy plant.

However, this is really only a viable method when dealing with micronutrient deficiencies, since these essential elements are needed in relatively small amounts. It is not possible to get a sufficiently large amount of nutrients through the stomata.

Elements such as Nitrogen (N), and Phosphorus (P) are needed by plants in higher quantities, and the only way to achieve proper levels is through absorption by the roots.

Elements needed in smaller amounts such as Iron (Fe), and Magnesium (Mg) can be maintained at healthy levels through foliar feeding.

Foliar applications can also be utilized for beneficial substances, such as sea kelp and compost teas. The naturally occurring plant growth regulators (PGRs) auxin, cytokinins, and gibberellins found in sea kelp extracts can positively affect plant development by increasing lateral shoot and flower bud formation when applied through a foliar application. Many

growers will also spray plants with a compost tea which often contains natural occurring PGRs, as well as beneficial microorganisms that can help fortify the plant against attacks from harmful organisms and pests.

A trend has been occurring within the liquid fertilizer industry for quite some time now that depicts foliar feeding as a simple fix for what may be a major systemic problem. Often companies include in the marketing of these products language such as “maximizes plant health”, or “increases yield”. Though foliar feeding can certainly be beneficial, from a nutrient perspective it should be a last resort type of endeavor.

If a grower continually experiences the same types of nutrient deficiencies it may have a lot to do with the mineral composition of the rooting medium, or an insufficient/imbalanced fertility program. Heavy reliance on a foliar feeding regimen is likely not the best way to approach the situation. Having the soil tested, choosing a different growing medium, or making careful adjustments to a fertility program are all ways of minimizing the need for a foliar application that is truly more of a temporary fix than a reliable long term solution.

If a grower maintains a proactive approach to plant fertilization and care, the need to supplement with foliar applications can be greatly reduced, or even eliminated.

However, if minor nutrient issues arise, the grower wishes to apply an auxiliary beneficial substance, or maybe just give the plant a little boost - foliar feeding, when done correctly, can be an effective addition to one’s gardening repertoire. 3 GARDENCULTUREMAGAZINE.COM

65

BY AMBER FIELDS

all urban foresting initiatives and programs deal with managed newly wooded areas

Urban Foresting It’s hard to imagine, but all of Europe was once heavily forested from the Arctic Ocean to the Mediterranean Sea, as was most of Ireland, and the UK. In the 1600s thick forest blanketed 50% of the US, and 75% of Canada. And this is just part of the immensity of tree cover that flourished on Earth in the past, though deforestation in many areas of the world has taken place more recently.

For starters, it will take a minimum of 100 years to call a new planting of trees a forest, and many decades will pass before they benefit the community with reduced CO2, shade, and increased oxygen. Then there is the challenges such urban trees face. Street trees can be ineffective carbon sequestration elements. Many are left to get tough or die, struggling to produce a few leaves. Canopies are pruned back to protect structures, whacked off around utility lines, and butchered along roadways so they don’t impede large trucks. All of this ‘maintenance’ or lack of care is reducing the amount of foliage available even further.

In large, densely populated cities, there isn’t enough ground available to replace the missing trees uniformly.

Instead, urban forestation can only take place in small, scattered locations. Making matters worse is the fact that not all tree species will thrive in an urban environment.

Many grow too large for the available space. Biodiversity is severely challenged, trees in poor health are pest and disease magnets, and urban environments magnify or alter climate in their hardiness zone.

66

Going Up, Not Out A recent restoration project in the historic district of Milan, Italy may hold the answer to greening cities everywhere.

The vertical forest has arrived in the form of two residential towers known as the Bosco Verticale that are covered with almost 17,000 plants.

Not mosses, grasses, and succulents planted in a wall garden, mind you, but planted terraces up the face of all four sides, and a roof garden that hold 730 trees, 5,000 shrubs, and 11,000 perennial and groundcover plants.

Photo: Architizer

If you investigate the term ‘urban foresting’ online you find that all such initiatives and programs deal with managed newly wooded areas - in parks, along streets, on portions of properties not covered by pavement and buildings. While this is all very commendable, and a step in a better direction, it has shortcomings.

The highrise buildings have 18 and 26 floors of condos surrounded by a total planting space that’s equal to 2.5 acres (1 hectare) on flat ground. Initially, there were supposed to be 900 trees, but in consulting with botanists and horticulturists, the engineers reduced the number to a level that would not challenge the structural ability to bear the load of the plants. Still, the plantings contain almost twice as many large trees as smaller types.

Greener Still With all those large plants towering overhead, the soaring structures are softer presence than the surrounding neighborhood, and will become more so as the trees and shrubs expand and mature in the coming years. All those leaves will do wonders at cleaning carbon and dust from the air in the Porta Nuova district of Milan,

URBAN FORESTING I GARDEN CULTURE

Photo: Luca Nebuloni/Wikipedia

simultaneously with increasing available oxygen. Then there’s the food and habitat for birds and pollinators all these plants will provide. But this is just the beginning of the benefits this vertical forest offers.

This thick green wall will provide the condo residents with more sustainable homes. The plantings and consistently moist growing media provide a buffer against the climate extremes with less reliance on energy that will increase over time as the plants work at attaining maturity. The thick tree canopies will give homes relief from the intense summer sun, but allow more sunshine in in the cloudier days of winter.

One might wonder how much pressure maintaining all these raised gardens will put on the local water supply.

Imagine the water bill if such were the case! But the Boeri Studio architectural team designed the buildings to use greywater for watering the forest. Additionally, the towers have photovoltaic energy systems that generate, recuperate, and optimize electricity for residents.

Tomorrow’s Urban Forest The urban forest of the 21st century can be a lot more sustainable than just a clump of managed trees. It can reduce both the carbon footprint, and the need for traditional energy sources, while making the city a

The vertical forest has arrived - the Bosco Verticale is covered with 730 trees, 5,000 shrubs, and 11,000 perennial and groundcover plants softer, more pleasant place to live. And if they can grow large trees on the side of high rise buildings, then it seems that growing fruit trees and food bearing plants is possible too. So, where is it? The world’s first totally outdoor vertical orchard?

Bosco Verticale was completed and opened for residency in October 2014. It offers several sizes of homes from small and efficient to high-end penthouse living. Last November, the buildings won the prestigious International Highrise Award that honors recently finished buildings over 328 feet tall (100 meters).

The competition was stiff with 26 nominees from 17 countries, but no other entry was anything like the ‘forest vertical’ in Milan. It’s a highrise development in a class all its own. 3

GARDENCULTUREMAGAZINE.COM

67

BY AGENT GREEN

: In a bizarre move, the government sold the Canadian Wheat Board to a private corporation comprised of foreign investors in the spring of 2015. It was heralded to give farmers opportunities that the long-standing export monopoly didn’t present.

According to a late July press But... they handed release, Agriculture Minister Giving farmers better control C a n a d i a n W h e a t Gerry Ritz sees this as a win-win over the prices they command Board assets situation... “The commercialization for their harvest would best be o v e r t o “ f o r e i g n of the CWB has been part done by turning the wheat board e n t it i e s f r e e o f of the government’s broader over to the farmers. Especially modernization of Canada’s grain when said agricultural engineers ch a rg e .” sector to stimulate investment, have invested millions of dollars and create jobs and economic growth for farmers and into the infrastructure that moves and stores their harvest Canadians.’’ cross-country to ports for shipment. Instead, managing a major portion of Canada’s farm economy was sold to Given the numerous complaints about short shipments, foreign interests operating under the freshly formed and product quality since Ottawa took over CWB company named Global Grain Group (G3). operations in 2011, along with loss of sales, poor transport, and misallocated payments - it was apparent that change was needed. But this goes against the grain.

Who Is the G3?

This new corporation that now owns 50.1% of the Granted, having the right to choose where to sell your Canadian Wheat Board is a partnership between Bunge, harvest without going to jail is a more positive horizon a U.S. agrifood conglomerate, and SALIC, a governmentfor farmers. So, the news that the wheat board would be managed Saudi investment fund. transformed into a private company in the near future a couple years ago made perfect sense. It would strengthen Why would the world’s third largest wheat exporting the economy in the Prairies, home of most Canadian wheat country sell all control of such a valuable commodity to growers. foreign corporations? It’s easy to see why a desert country

68

CEREAL YIELD I GARDEN CULTURE

y a w a e v A Gi 5 0 .1% O F T H E C A N A D I A N W H E A T B O A R D CO N T R O L L ED BY U S A N D SAU D I CO R P O R AT I O N S

FOREIGN I NTERE STS NOW M ANAGE A M AJOR PORTION OF C A N A D A’ S FA R M E C O N O M Y would be eager to acquire the answer to reducing the cost of such a basic food need. Surely, the Canadian government is aware that cheaper grain imports translates to lower farm incomes. You can’t cut prices, and maintain previous income levels. That’s what happened to the U.S. economy.

Less is not more in money, and wheat is Canada’s most important agricultural crop. As a major exporter of a top staple grain, the CWB should have sold for billions - not paltry millions with a promise to invest $250 million in the export infrastructure. Basically, they handed the keys to thousands of train cars, ships, facilities, and more over to their biggest competitors for a song.

Promises, Promises The farmers may have gained the right to choose their buyer, but the G3 needs them to remain on board to be successful. The government sold just enough of the CWB to give the G3 control, with the remaining 49.9% being held in trust for the farmers through a loyalty rewards scheme to ensure lots of grain still flows through the G3’s hands, instead of their competitors.

They promote this Farmer Equity Program as if they were giving farmers something big for nothing, when it’s really financial assistance being sought by the G3. They want growers to fund their startup, venture capital so to speak that may not pan out for the investors in the end. And in 7 years (at minimum) the G3 will shed these “minority interests” at “fair market value” to become 100% owners.

No doubt followed by taking the company public with shares and stockholders.

For every tonne a farmer sells to G3 Canada Limited, the now “fully Canadian company,” they receive $5 in equity.

But there’s a ceiling, and time limitations. The cumulative available farm equity is set at $249 million. It covers all wheat sold to the CWB from 2013-14 through 2015-16 harvests, and represents just under 4 equity units per acre of wheat based on current crop yields in Western Canada.

In other words, the farmers who built the wheat board, and have invested heavily in its assets over the years are now the expendable minorities in their own marketing agency after being enticed to fund the takeover. And they cannot cash out their equity units until the G3 decides they no longer need the funds to operate.

GARDENCULTUREMAGAZINE.COM

69

CEREAL YIELD I GARDEN CULTURE

...financing G3’s b us for seriously dis iness acquisition counted returns

Fan and Spread

W he at fa r m e r s are now expend able m i n o r it i e s in their own marketing agency

The old system operated from a single desk, giving farmers a lot of input on how the wheat board was run. Now there will be many desks, and shipping off both coasts. The G3 is building new storage facilities in different locations, which some farmers see as modernization and improvement. Yet, a distinct divide has formed among farmers since the change in ownership took place.

There are other farmers who view these events from the opposite point of view, such as Manitoba farmer, Dean Harder. He can’t see where the new arrangement gives grain producers any control over the new wheat board set up. He doesn’t think this equity thing is win-win for farmers. After all, it is only $19.47 in fuzzy promises per acre harvested per year. Not the greatest rate of return in exchange for bankrolling your export agent’s paycheck, and operational costs. Venture capitalists get at least 12%. This equity arrangement is a fraction of that based on the purchase price - not the amount fetched on the market.

Meanwhile, the more political agriculture groups; the Western Canadian Wheat Growers, and Grain Growers of Canada welcomed the deal. But not all in politics favor the new entity or the arrangement.

Like many farmers, New Democratic Party Parliament Member, Pat Martin, has issues with these developments, both the deal’s structure, and Ottawa having handed Canadian Wheat Board assets over to “foreign entities free of charge.” Agriculture Minister Gerry Ritz says that the $250 million the G3 paid to secure the controlling interests of the CWB has helped the government to pay down the debts the Crown-owned trade board accrued.

70

It Still Has Debts?

Obviously, they let it go for less than they should have. And while grain growers no longer face imprisonment over selling their harvest elsewhere, it remains to be seen if it will actually help them gain financially. It may look highly lucrative going in, but the government no longer has any controlling interest in Canada’s grain exports, nor any say on what corporation the G3 can sell their interests to in the future. Turning the wheat board into a commercial company opens the doors to anyone in the world with enough money to buy them out.

Right now, farmers have nothing but promises, beginning with this one by G3 CEO, Karl Gerrand...

“Farmers can enjoy the growth of the enterprise we’re building simply by delivering grain for a market value.

That’s pretty exciting for growers. When you do the math on some of the larger volumes, the equity can grow quickly, and they can share in the growth of G3.”

Fluff. Candy coating the reality, which is best described

by NDP PM Pat Martin...

“I think it’s a sad for the Canadian grain industry. There never was a business for abolishing the wheat board to begin with, but you really have to question what kind of a business model it is to hand it over to an American agrifood giant, and a Saudi agrifood giant who until recently were your greatest competitors.”

How does selling your wheat to your biggest competitor while financing their venture for seriously discounted returns, and reducing the cost of imports into the desert equal economic gain for farmers? It’s not logical. 3

BY ALISTAIR MARTIN

r e t t o H e Ar

r e v E Than

There is no doubt, we love our chillies in the UK. Whether eaten raw for a local Chilli Challenge, or added to a Friday night curry, we can’t seem to get enough of these little fiery pods of mouth tingling (and sometimes bum-twitching) goodness!

What many people don’t realise is that it was actually the Portuguese who were responsible for bringing this humble fruit to this part of the world; it is reported that Christopher Columbus first encountered them in South America way back in 1490. A physician on Columbus’ second voyage in 1493, named Diego Alvarez Chanca, first introduced them in Europe. He was more interested in their medicinal properties than commercializing them, leaving the door open to Portuguese traders to bring them to mainland Europe to replace the much coveted Black Pepper - which at the time was so valuable it was used as currency in some parts of the world!

Black pepper pods have been used since Roman times as a seasoning to bring heat and flavour to bland foods.

There were cheaper replacement herbs that would add some heat, but at the expense of being quite bitter.

As rice and potatoes were one of the main staple ingredients in everyday meals, the Chilli was perfect for adding depth and flavour to many dishes. Within 50 years, and with the help of barter and trading, the Chilli had made its journey throughout Europe and Asia, forever changing our diets and culinary tastes.

72

HYDRO CHILLIES I GARDEN CULTURE

we can’t seem to get enough of these little fiery pods re people everywhere a l year growing chillies al long indoors

t h e p e r fe c t plant to show how a fa s t flowering annual will p e r fo r m

Retail stores in any industry spend endless time and energy working on their merchandising strategy.

Positioning key products at exact heights in certain locations through the store. Setting up for one holiday, after the last one just ended. Millions of pounds are spent every year trying to figure out the best way to lay out a shop and feature certain products all for one reason, to get people to spend their money. Indoor garden centres are no different, or at least they shouldn’t be. Retailers who want to feature their equipment and gardening prowess have a merchandising strategy to grow beautiful gardens.

Without a doubt, the resounding plant of choice grown in these display gardens is the chilli.

If you pop down to your local hydroponics shop, you will more than likely find various chilli varieties being grown in a multitude of different methods, but what exactly makes this the display plant of choice for so many shops?

Many hydroponic retailers find chillies are the perfect plant genus to show how a fast flowering annual will perform in the growing systems and environments they have on display; the plants adapt easily to different growing methods, are hardy, pretty to look at and fruitful.

They provide that perfect starting point for discussing

a customer’s requirements, reassuring the retailer that any equipment they later purchase is suitable for their own garden back home, and not just another case of “My mate says I need this .”

It’s important for the retailer to show his potential customers that he/she can grow. Which is one of the all-important factors for customers; they need to have confidence when parting with their hard earned money that this guy standing in front of him knows what he is talking about.

As chillies also produce clones with unparalleled ease, they’re ideal for an any propagator demonstration, and once the latest cuttings have rooted, they can be gifted to a new customer. We’ve found this can be just as welcome as an introductory discount, and also ensures they have something to grow straight away.

In recent years, the trend of the Super Hot Chilli has come extremely popular. No longer are these Scovilletopping fruits reserved for the craziest of cultivators, they are a means of showing how easy indoor cultivation can be. As chilli festivals pop up in every county across the UK, many home growers are now able to produce multiple crops throughout the year, regardless of the outdoor weather. People everywhere GARDENCULTUREMAGAZINE.COM

73

HYDRO CHILLIES I GARDEN CULTURE

c l o n e s w it h unparalleled ease

are growing chillies all year long indoors. This has lead to a UK wide chilli competition, where cultivators show off their hottest and best looking pods, not to mention the hundreds of Pod Review videos where brave souls test their taste buds (or lack of them!) while chewing down the most recent of their harvests.

The old adage of drinking milk or yoghurt to lessen the heat of Chillies is based in science and not just folklore. The chemical that gives chillies their heat, known as Capsaicin, is hydrophobic and is actually spread by water (think of oil floating on top of a puddle). This prevents the Capsaicin from being washed away or diluted. Capsaicin does, however, dissolve in alcohol and fat; while alcohol can help, there is only so much one can drink before it gets rather messy! Yoghurt and milk contains casein, a fat-loving protein that has a detergent effect on the capsaicin (think of the affect soap has on grease), allowing a higher tolerance of these super hot fruits.

You don’t need to look far on the internet to find a whole host of national and local chilli communities uniting to swap valuable information, seeds, and growing techniques. We, the UK’s hydroponic retailers, are helping lead the way by example, showing everyone just how easy it is to grow your own, and become self sufficient. Who knows, perhaps the hydro industry will host our own Super Hot Chilli competition.....We’ll bring the Chillies, you bring the milk! 3

74

New Maxibright Xpert - 600W Magnetic Ballast

Key Features: 600W Genuine Power Quality components from Venture Lighting Precision wound ballast Wall-mountable, high gloss, vented enclosure Matched digital SmartTM igniter Flying lead with IEC connection Runs high pressure sodium or metal halide lamps Removable sleeve packaging Small size: L:245mm H:110mm W:120mm

Genuine Power All Maxibright magnetic ballasts that carry the Genuine Power mark have been tested to European standards to ensure that they continuously provide the Wattage specified on the ballast. Genuine Power ballasts will continually provide the correct power to the lamp.

Note: A ballast that under drives your lamp by 10% can result in up to 20% less light. 20% less light will result in a significant loss of yield.

For more information please visit: genuinequality.co.uk

Genuine Power at a low price!

Get yours today!...Find your local retailer at maxigrow.com/where-to-buy/

BY THEO TEKSTRA – MARKETING MANAGER GAVITA HOLLAND BV

A BRIGHT FUTURE? “LEDs are the future”... How often have you heard that in the past few years? So, is the future already now, or are we getting there? Is LED the new “wonder light,” or do we still have to learn to appreciate LED? An overview of the history of LED and the current status.

76

LED LIGHTING I GARDEN CULTURE

THE FIRST LEDS WERE COMMERCIALLY ON THE MARKET LONG BEFORE THE FIRST HPS L AMP History Did you know that the first LEDs were commercially on the market long before the first HPS lamp? It was 1962 when the first (infra)red LED hit the market, and the first HPS lamp came out around 1968. The LED found its way into computers, watches, calculators, and other appliances that needed a long life, low power indicator or display light. First, there were the red LEDs, and later new technologies enabled other colors too. The first green and yellow LEDs came out in 1971, but it took until 1993 until the brilliant blue and white LEDs hit the market.

Back then we never thought that LED technology would replace the incandescent lamp, or even the highly efficient sodium lights. That is a development of the last 10 years.

LED has evolved into what we call a “disruptive technology”: it displaces established technology, such as incandescent and CFL, and shakes up the industry. In 1993, we had the first white LEDS, but it took until 2006 for LED technology to hit the 100 lumens per Watt mark.

Today, there is LED technology that goes even beyond that, though it becomes harder to raise the bar, and it does come at a cost.

Technology Without diving too heavily into the actual technology, LED light is based on what we call Electroluminescence.

In laymen’s terms: When applying electrical power to a crystal (a semiconductor), it starts emitting light.

Contrary to what you would expect, light does not exit the semiconductor in all ways, but in certain directions due to its structure. By shaping the semiconductor in a specific way you can focus the light. The LED is usually embedded in a clear molded plastic, that acts not only as a housing to hold the fragile electronics, but also as a lens to diffuse the light from the emitter.

Cross-section of Philips LED, Luxeon K2

Not all energy is converted to light, and not all light escapes the semiconductor, and there is a lot of heat development as well. However, in contrast to HPS lighting, this is not infrared radiated heat, but conducted heat. So LEDs do create heat, just not as radiant heat, but conductive heat.

This is why LEDs need to be thoroughly cooled, and this is also the Achilles heel of many LED fixtures. Temperature is the enemy of a long LED life and light maintenance, hence the need for a large thermal heat sink. So the light of LEDs contains very little heat, in contrast with high pressure sodium, which contains about 55-58% infrared radiation. Is that a lot? Not when you realize that the sun emits 53% infrared radiation. There we already have one big difference between HPS and LED.

White LEDs Now each specific semiconductor will give you a specific color of light, but there is no semiconductor that emits white light. How do they do that? Very simple: think compact fluorescent (CFL). When they developed a blue LED in the 90’s, they suddenly also had the technology to make a white LED, by adding a phosphorous layer on the blue LED. So basically a white LED works the same as a CFL: The blue light excites the phosphor, and depending on the blend of that phosphor, a specific color (band) will be emitted. The phosphorous layer is usually semi-transparent, so some blue light will also still come through. By changing the phosphor coating you can change the spectrum.

However, phosphor coatings do have a conversion efficiency, and they do reflect some light back to the emitter as well. The best coatings nowadays are 85% efficient at optimal temperatures, so there is a loss of light too. Moreover, a phosphor coating close to the emitter will heat up, decreasing its efficiency. That’s why white LEDs are less efficient than their blue counterparts. The phosphor coating is more diffuse than the original blue LED. Lens systems are required to get the light where you need it.

GARDENCULTUREMAGAZINE.COM

77

TEMPERATURE IS THE ENEMY OF A LONG LED LIFE AND LIGHT MAINTENANCE Remote-Phosphor LEDs Relatively new on the market are the remote-phosphor LEDs. They are more efficient than the integrated white LEDs, with up to more than 20% better conversion rate than the standard white LED. How does that work?

At this moment the best single color LEDs can do up to 2.7 μmol s-1 per Watt under ideal circumstances, for white LEDs this is about 2.4 with remote-phosphor technology.

These are the top of the line LEDs with a very high efficiency, but they also come at a cost.

In 2000 at a conference, Dr. Roland Haitz presented a forecast about LED price and output development, now known as Haitz’s law. It defines light per package, so not necessarily the efficiency. As you can imagine, there is a theoretical maximum in the amount of light you can convert from energy. What is interesting though is the prognosis of the price compared to the light output.

Phosphor conversion process in a white LED and remote phosphor system – Source: CREE A normal white LED has the phosphor coating very close to the emitter. There will be conversion losses and reflection losses as you see in the illustration, but the biggest problem is the temperature of the LED, and therefore, the phosphor layer itself. Some of the blue light will pass, some will be converted, but the conversion rate is negatively affected by the temperature of the phosphor.

In a remote-phosphor application, we use blue LEDs and a phosphor coated (glass) disk at a distance from the LEDs, in a reflector. While the efficiency of this system is a lot better, it will only produce diffuse light, because, due to the size of the phosphor disk, and the diffuse output of the light, it is very hard to concentrate this light. Also the costs can be much higher than single white LEDs, because the costs of making the fixture with the disk is higher, not to mention IP ratings you want to achieve. So, for close diffuse lighting this is a great technology, but not so much for focused high intensity top lights.

Output Power / Light Output / Efficiency The theoretical efficiency of an LED could even be over 4 μmol s-1 per Watt when all of the energy could be converted, It would require far future technology to even get close to this, so don’t count on that coming for years. We will see though that efficiency will get a bit better still, and that the prices are going to drop.

78

The law is about as follows: Every decade the cost per lumen drops a factor 10, while the output per LED package (single unit) increases by a factor 20. So you will get bigger LEDs with higher output, against a much lower price. What does this mean for our purpose?

First of all, the efficiency of LEDs does NOT increase a factor 20. It is not even said that the higher output LEDs will be much more efficient - at first, they will just have a higher output. What is interesting though is that prices will drop.

We have seen this in the past ten years, and we still see a drop in price.

LED LIGHTING I GARDEN CULTURE

LEDS ARE AN EXCITING NEW LIGHTING TECHNOLOGY COB LEDs less light, a value you would not reach with HPS lamps (they would already be replaced). The light maintenance is greatly influenced by the junction temperature, which is the temperature of the base of the LED. High temperatures decrease this dramatically:

Cree high output white COB You might have heard about COB LEDs. COB stands for Chip on Board, and it is a way of producing cheaper high output LEDs by pre-mounting many of them on a board. While the high output single LEDs range up to several watts, you can make COBs in much higher wattages, combining multiple LEDs. A phosphor coated COB will have less glare than the single point LEDs, but the light density is also a bit lower than the single LEDs. A lens system is needed to direct the light, leading to extra losses.

COBs are developed to reduce costs and increase output, and they are not necessarily the best solution for all lighting needs. They might be too concentrated in some applications, or not concentrated enough for deep penetration.

COBs will decrease the price of LED fixtures, but it remains to be seen how they can be best applied.

Source: Philips technology white paper So, environment and cooling of the LEDs plays an important role in getting optimal light levels and optimal light maintenance. A L90 of 25,000 hours could well be much lower.

Light Maintenance HPS light maintenance is specified as percentage of light maintained over a period. For the Philips GreenPower plus 1000W EL this is as follows: 4,000h 8,000h 10,000h

98% 96% 95%

LEDs are specified differently. For household LEDs we use the specification L70 as an industry standard: It is found out that 70% lumens maintenance is close to the threshold at which a human eye can detect a reduction in light output. So, the L70 specification gives you the number of hours of operation until there is a degradation in light of 30%. For plants, however, light maintenance is crucial. You should always look at a L90 for LEDs that are used in Horticulture. This is already 10%

GARDENCULTUREMAGAZINE.COM

79

LED LIGHTING I GARDEN CULTURE

A MICROMOLE OF LED LIGHT IS STILL 6-10 TIMES MORE EXPENSIVE THAN HPS What is the verdict?

LEDs are an exciting new lighting technology. They are efficient, available in almost every spectrum you desire, and they have a long life. You can use them in applications where HID lamps could never be used, for example: • • •

Interlighting (lighting between high crops in greenhouses) Multi-layer growing (food factories where distance to the crop is low) Specific supplemental light (for example to supplement HPS)

HPS is not an alternative for any of those applications.

However, there are some disadvantages as well. LEDs are on full trial in many greenhouses, because growers want to experience what is needed to grow under LED successfully.

However, replacing HPS top lighting with LED has a few problems that need to be overcome: 1. Uniformity. As you want to intercept as little light as possible you must make light strips that fit under existing or new profiles.

2. Climate conditions. LEDs perform best and live longest when they are not driven to their highest wattage, and are kept cool. Temperatures at the top of a greenhouse can be very high.

3. Little infrared heat. Even in a desert, the nights are cold. In the winter seasons, when the assimilation lighting is used most often, the infrared radiation of the HPS light is a very efficient way to heat your crop. With LEDs you will need to heat your greenhouse as all the heat dissipates at the back of the LED. Also, the lower infrared radiation leads to less evaporation of water, so you need to up the EC of your nutrients by more than 25% in many cases.

Above: Tomato LED trials at GreenQ – innovation center in The Netherlands

4. Price. A micromole of LED light is still 6-10 times more expensive than traditional HPS lighting. This is the biggest problem, as you have to invest heavily, and will need to keep that installation for at least 5-7 years. In that time we expect LED to become at least 20-40% more efficient, so when are you going to invest? When there is a more efficient HPS lamp available, it is just a matter of changing a lamp, but you can’t with LED. For indoor uses, many of these issues are the same. As it is your primary lighting indoors, the investment is very high. No infrared means that you will need to find a way to keep your crop at the optimal temperature, while 1000W of LED create the same heat gain as 1000W HPS. So in a recirculating room there is hardly any advantage in cooling.

We will need to learn how to grow under LED. Prices still need to drop to make them a viable alternative for HPS. But the future is nearing, and it is a good idea to get some experience with growing under LED, as you will be confronted with different growing challenges. 3

GARDENCULTUREMAGAZINE.COM

81

MUSHROOM HUNTING I GARDEN CULTURE

MUSHROOM HUNTING

in My Backyard

Wood hedgehog

BY ERIC CO ULOMBE

I have had an interest in foraging for mushrooms since I can remember. As a kid our Italian neighbors used to pick mushrooms all over suburban Montreal. But it wasn’t until they came to our cottage, my present home, that I saw their real passion. Apparently, I lived on a treasure trove of wild mushrooms.

They would go out for a couple of hours, and come back with bags and bags of mushrooms. I remember their passion, singing as they hunted, and the pure joy when they found a new species.

Apparently, I lived on a treasure trove of wild mushrooms Ever since, I’ve wanted to go out there, and do the same thing. I have friends in California and Pennsylvania who pick tons of the most delicious fungi. The problem was mushrooms like Amanita Virosa. This wild mushroom, which sprouts prodigiously throughout Quebec, is as poisonous as they come. Eat a single bite, and you’re dead. It won’t happen right away either. You’ll feel fine for a day or so before the symptoms begin. By then it’s too late, your liver will have been damaged beyond repair. Yikes! After doing a little research I found there are several very poisonous mushrooms in my area, and many that look like yummy mushrooms. So, I just never did it.

Every Friday, in our little community of Morin-Heights, there is a small farmer’s market. We bring the kids, and like to see what our local farmers are up to. It happened that we met Susan Valyi. She was set up with her booth full of pictures of mushrooms, and a table with samples of local varieties. After talking fungi for a couple of minutes

she told me she does group tours in my area. Instead, I proposed that she come to my house, and show my wife and I what kind of gastronomical delights are growing in our backyard. We arranged a date in late September.

Susan arrived promptly at 10 am; we had limited time, so we got right to it.

It hadn’t been too rainy in most of Quebec, and Susan told us other regions had very few mushrooms. We had a good rainfall not long before, the ground was still moist, and good for mushroom growth.

Our home is in an amazing setting. We border a small private lake, that flows into the Bonnie Brooke river. The entire area is scattered with small rolling wooded hills. The river flows through a valley through miles of forest. The natural watershed keeps the area wet, and the dense forest keeps the floor covered in decomposing matter.

GARDENCULTUREMAGAZINE.COM

83

MUSHROOM HUNTING I GARDEN CULTURE

It wasn’t long, and we were finding tons of different varieties

European destroying angel, Amanita virosa

Woolly Milkcap, La ctarius

We walked along the river towards the waterfalls, a walk I had done a thousand times in my life. Just 2 minutes in, and we find our first treats. “Hedgehogs!” She says with some exuberance.

They are apparently a delicacy, and rare. Slightly nutty with a nice firm texture. It wasn’t long, and we were finding tons of different varieties. Most were not edible, but some were.

Like the Bolete or Boletus family was well represented, and we found two types that were edible, but learned that there are some that are not, and to be careful. The bad ones are not poisonous, but could definitely make you sick. They bleed blue/ grey when you cut them, got it. We also found some Lactarius, here too there were two types. They also bleed, a kind of latex like substance when you cut them.

We also found a bunch of honey mushrooms, and two amazing medicinal ones, reishi and chaga. The old adage time flies when you are having fun certainly applied here. Our 2

The problem was mushrooms like Amanita virosa hour tour was almost over, I could have continued all day.

There was that sensation you get, like when you are fishing, (or hunting I suppose, I don’t hunt), or like in sales; the big one could be right around the corner. It was really enjoyable.

I go to a lot of effort to grow my own food. And when I do eat what I grow, I do it with a great sense of satisfaction and pride. Mushroom foraging has the same impact. Not only were they some of the best tasting things I have ever eaten, they were free. I was super proud to present my dinner guests with my wild mushroom risotto, and other delectable mushroom dishes.

I highly recommend mushroom foraging to anyone who has enough brains to do it properly.

I myself am hooked. 3 GARDENCULTUREMAGAZINE.COM

85

O

N

T

R

O

L

S

W

I

T

C

H

Key Features:

CS4

• Sentinel CS4 - IMO relay • Sentinel CS8 - GE contactor • Grasslin precision timed • Compact design • Robust high quality powder coated metal enclosure • Individually switched sockets with illuminated switch • Wall or grow tent pole mountable • Manufactured in the UK

CS8

Sentinel is a robust, Grasslin precision timed range of control switches using top quality components from reliable brands.

Available in 4 way or 8 way versions the Sentinel range is suitable for either wall or grow tent pole mounting.

The compact design and individually illuminated, switched sockets provide the user with excellent flexibility, control and reliability at an affordable price.

Find your local retailer: maxigrow.com/where-to-buy/

Quality Components • Reliability • Precision Timed • Flexibility & Control

C

or eri ix up o m e s oc Th ro/c d hy

The Gold Standard for Growing...

The only RHP certified clay pebble specifically designed for growing. They hold much more water than round pebbles because of their porous structure. These are mixed with the cleanest coco on the market, giving one of the best growing mediums available in the world.

Exclusively available in the UK from: Direct Gardening Supplies T: 01226 320850 W: directgardeningsupplies.co.uk

Maxigrow Nutriculture Advanced Gardening T: 01246 221125 T: 01695 554080 T: 020 8443 2420 W: maxigrow.com W: nutriculture.co.uk W: advanced-gardening.com

www.goldlabel.nl