Piet Hein van Baar - LED interlighting in tomato crops

LED interlighting in tomato crops; This is why.

Piet Hein van Baar Plant specialist high wire crops & soft fruits Signify June 12, 2018

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LED interlighting in tomato crops; this is why Topics • The road to where we are now • Interlighting and its benefits • Lighting solutions • Results from commercial growers

Boost production by applying the right light at the right spot with a system efficacy of up to 3.0 μmol/J.

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Philips Lighting is now Signify

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The start of Philips horticulture LED solutions

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A new era of light begins

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Leading the way

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Now we are‌

Wight Salads, UK

Glenwood Valley, Canada

Martin Sigg, Finland

Holt, UK

Jami, Netherlands 7

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Agroinwest, Russia

Wim Peters, Netherlands

Plant response to LED Interlighting What do we see with Interlighting?

At locations with installed interlighting we see a clear measured effect on phototosynthesis

“The light is effective in reaching the plant and keeping the leaves more photosynthetically active.�

Stefan Gulin, Oy Gulin Ab

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Why more light is needed in the middle of the crop Top of crop “If a weaker truss passes the Interlight it becomes strong again, the Interlight is like a medicine.�

Interlight

Adding light in the canopy = very efficient!

Toplighting Floor 9

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Interlighting

Andy de Jong, Jami VOF

Impact of LED Interlighting on fruit weight 2009-2010 first trial with horizontal interlighting in a 1000 m² compartment. In combination with 145 µmol/m²/sec HPS lighting “Tomatoes don’t lie. You can see immediately what’s happening with the plants when they get more light.”

Martin Sigg, owner, Handelsträdgård Martin Sigg Ab

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The energy balance of HPS vs LED

“The Philips LEDs fit in perfectly with our objectives of improving yield and making business operations more sustainable" Michel Zwinkels, co-owner Jami VOF

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LED interlighting; a summary

spectrum

no heat

right position

vital leaves, more photosynthesis

better climate control

higher plantdensity

higher fruitweight

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more fruits per m²

“We are able to control growth perfectly throughout the entire year using the hybrid lighting system” Wim Peters, owner Wim Peters Kwekerijen

Possible lighting solutions, same installed power

“We wanted a heavy-duty lighting installation that didn't raise the plant temperature.�

Matthieu Serrault, Le Jardin de Rabelais

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LED interlighting, proven results In 2012 the first commercial project: -

After following the trials they believed in the solution.

Because of an higher efficienty an higher light level was possible.

The greenhouse was too low for 100% HPS. This solution kept them in controle of the climate.

Installed light level:

110 µmol/m²/s Philips GreenPower LED Interlight 105 µmol/m²/s HPS

Their challenge:

- Find the right strategy to grow with Interlight.

- Improve the winter production every year.

- A consistent high level quality.

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LED Interlighting increases winter production Head density plan

Action week (calender week)

Head density (heads/m2)

Planting

42

2.5

Keep extra shoots*

46

3.3

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Head density plan

Action week (calender week)

Head density (heads/m2)

Planting

42

2.5

Keep extra shoots*

43

3.3

4.1

47

4.1

0

31

0

*) 0 means clipping the head

WINTER PRODUCTION

From 2012 to 2018 the winterproduction increased by 15% 15

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Reference situation; HPS lighting Reference HPS

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Head density plan

Max hours HPS

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h/day

Installed HPS

175

mmol/m2/sec

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Action week (calender week)

Head density (heads/m2)

Planting

42

2.78

Keep extra shoots*

52

3.7

6

4.17

32

0

Hybrid situation: HPS + LED Interlighting Hybrid (HPS + IL)

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Head density plan

Type of top-lighting

HPS

Max hours toplighting

18

h/day

Max hours interlighting

19

h/day

Installed top lighting

175

mmol/m2/sec

Installed inter lighting

75

mmol/m /sec

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Action week (calender week)

Head density (heads/m2)

Planting

42

2.78

Keep extra shoots*

44

3.24

49

3.7

52

4.17

32

0

(Cumulative) amount of fruits/m2

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(Cumulative) production/m2

24% more production because of a higher plant density and more setted fruits per m²

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Light use efficiency (gram/mol) LED interlighting is used more efficiently than HPS and natural light!

“The challenge to make the investment profitable has been realized.�

Kevin Pittoors, Primato bvba

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LED interlighting in tomato crops; this is why!

Discover your recipe for growth Switch to Philips Horticulture LED Solutions • We understand how light affects your growing business • Proven prognosis and advice based on our extensive expertise • Minimize your risk with the most reliable LED products #switchongrowth

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