- VP Growing Operations
- Head Grower Strawberries, Australia
- Growing Manager for Hydroponic strawberry producer
- Farm Manager Costa Rica
- Regional Sales Manager Fresh Produce
- Head Grower Strawberries, Norway
- Export Trade Manager
- Business Developer - Northern Europe
- Orchard Sector Manager
Glenwood Valley Farms Canada boost productivity with LED interlighting
Glenwood Valley Farms are established greenhouse growers of hand-picked, locally grown vegetables. The company has 14.5 acres of greenhouse in Langley, Canada, growing Long English cucumbers, minicucumbers, eggplants, and a variety of peppers. Herb Schlacht, the owner, had heard about the potential positive effect of LEDs, and after a visit from Philips decided to conduct a test. It comprised four rows of 16 GreenPower interlighting modules, used together with the already existing HPS (High Pressure Sodium, also known as HID) lighting system.
The average increase in production of the LED treatment was 19% (kg/m2), while adding only 8% extra light. This indicates that highly efficient use is made of the LED light. The extra production could be seen in faster maturation of the fruits and slightly larger fruits. Also, the positioning and size of the leaves were different: the leaves in the LED trial group were darker and smaller, and they were also positioned less horizontally, and facing more towards the LEDs. At the end of the crop cycle it could be seen that much energy was given by the crop. The grower thinks that more can be realized when irrigation and climate can be optimally controlled for this crop.
Ken Ng - Grower and Production Manager, Vicky Surrage - R + D Manager, Herb Schlacht - Owner
Various trials in tomato and cucumber have demonstrated that this enables much higher and more efficient plant production as the light provided can be converted more efficiently into sugars, the building blocks of the plant. And since this new lighting solution is highly focused, no light is lost to the ground. LED-based lighting is also extremely energy-efficient, but the small amount of heat produced by the modules further saves on heating costs. Tests with hybrid systems such as the Glenwood Valley system have shown an increased production by means of more efficient light absorption. Particularly in the winter months this provides the plant with better growing conditions. But also in the summer there are opportunities of keeping a crop under control.
For more information:
Philips Horticultural Lighting, the Netherlands
Marjan Welvaarts, Global Marcom Manager Horticulture
Tel.: +31 (0)40 275 64 99
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