Case Studies

Heating roots summary

crop location facility yield increase comments
Basil Jordan Valley Tunnels, volcanic substrate beds 30% Ground loop only
Strawberry Hasharon Greenhouse, hanging insulated beds 20% Ground loop only
Shortened growing cycle by 3 weeks,
improved quality, no need for additional air heating
Cucumbers Hasharon Greenhouse, soil 40% Ground loop only
Conducted by Netafim at the Magal experimental site
Lettuce Jordan Valley Net house, volcanic substrate beds 60% Ground loop only
4 weeks to harvest weight [350 gr]
Flowers Hasharon Greenhouse, volcanic substrate beds Heat pump
Shortened time to market
Melons Ein Yahav Greenhouse tunnel, soil 10% Ground loop only
15%-18% increase in size and export quality

 

Cooling roots summary

crop location facility yield increase comments
Cucumbers Hasharon Greenhouse, soil 25% Ground loop only
hot winter 2013-14
Cherry Tomatoes Jordan Valley Greenhouse, volcanic substrate beds 20% Heat pump
Tomatoes, var. 870 Jordan Valley Net house, volcanic substrate beds 30% Heat pump
mid-summer planting;first post-summer harvest
Lettuce Jordan Valley Net house, volcanic substrate beds 45% Ground loop only (volcanic substrate bed)
Melons Arava Desert Greenhouse tunnel, soil Ground loop only
Strong cooling effect, increased stem diameter x3

 

Case studies by crop