GNN120416

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Volume 38, Number 10 | April 16, 2012

$4.25

PRACTICAL PRODUCTION TIPS FOR THE PRAIRIE FARMER

www.grainews.ca

The value of micronutrient seed dressings Micronutrient seed dressings are relatively new in Western Canada. Retailers generally don’t claim that these products will increase yield, but they may add value for some farmers BY LISA GUENTHER

M

icronutrient seed dressings, already well established in the U.S., are starting to appear on our side of the border. Unlike traditional seed treatments designed to combat plant disease, seed dressings are claimed to boost returns — if not necessarily yields — by promoting better emergence and seedling vigour. One product has received official CFIA registration. Other products have been reviewed through independent trials in Saskatchewan, but with inconclusive results. Making claims for benefits of micronutrient fertilizer is something of a grey area under Canadian Food Inspection Agency (CFIA) regulations. If the micronutrients are part of a product containing less than 24 per cent nitrogen, phosphorus or potassium, then registration is required. Only one micronutrient product, Loveland’s Awaken ST, distributed in Canada by UAP, has received CFIA registration. Awaken ST is a seed-applied nutrient, with a micronutrient package including five per cent zinc plus boron, copper, iron, manganese and molybdenum. “It’s not for the faint of heart to actually pursue a registration for

these types of things,” says Eric Gregory, product manager with UAP. Gregory says it took two years of western Canadian trials plus two years of review to register Awaken ST. The product is registered to improve root development, speed emergence, and improve biomass production in cereals. Trial data showed the seed treated with Awaken ST had an increase of five plants per row foot over untreated seed in 12 separate fields. Though Awaken ST isn’t registered for yield, UAP’s trials did show yield increases. One trial in North Dakota showed a yield bump of nine bushels per acre, though Gregory says that result isn’t typical. Western Canadian trials have shown on average a five per cent yield increase over check, about a 2.5-bushel increase on a 50 bushel wheat crop.

IHARF TESTS

IHARF’s research plots during the growing season.

Tw o o t h e r m i c r o n u t r i e n t seed dressings have been tested by the Indian Head Agricultural Research Foundation (IHARF) in Saskatchewan. In 2010 and 2011, IHARF evaluated two micronutrient seed dressings — Omex’s Primer Zn on spring wheat and canola, and Omex’s Primer Pulse on lentils and

field peas. Crop establishment and yield were evaluated at plots seeded at Canora, Scott, Swift Current and Indian Head. The sites offered different soil conditions, ranging from coarse loam to heavy clays. Both 2010 and 2011 were wetter than normal, and in 2011 seeding was delayed until the end of May

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PHOTO: IHARF

in Swift Current and early June in Canora. Temperatures were cooler than normal at most sites in May, and crops at most sites were moisture stressed. IHARF research manager Chris Holzapfel said there were few differences between treated and untreated plots.

In This Issue

“When we did see an effect, they were pretty few and far between and inconsistent. I would probably say it was almost as common to see a slight negative impact on plant emergence as it was to see a positive impact on plant emergence.”

» CONTINUED ON PAGE 4

Wheat & Chaff ..................

2

Features ............................

5

Crop Advisor’s Casebook

6

Columns ........................... 20 Machinery & Shop ............ 34 Cattleman’s Corner .......... 29

10 steps to managing fusarium

ANGELA LOVELL PAGE 16

New on-farm heavy lifting options

FarmLife ............................ 39

SCOTT GARVEY PAGE 34

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2/20/12 8:55 AM


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