Articles
EFFECT OF SOIL HEATING ON PLANT PRODUCTIVITY AND ENERGY CONSERVATION IN NORTHERN GREENHOUSES.
Article number
148_111
Pages
853 – 858
Language
Abstract
Soil warming (22–24°C) increased total yields of greenhouse tomato by 40% in the spring and by 8% in the fall.
When grown under reduced air temperature in a plastic tunnel, tomato plant yields were increased by 27 and 24% for the spring and fall crops, respectively.
In the fall, soil warming caused greater effects when night air temperature was reduced.
Cucumber yields were increased by 36% by soil warming at spring, but were not significantly affected when grown in the fall.
Economic and energetic studies showed that soil warming was profitable under the climatic conditions of Eastern Canada.
When grown under reduced air temperature in a plastic tunnel, tomato plant yields were increased by 27 and 24% for the spring and fall crops, respectively.
In the fall, soil warming caused greater effects when night air temperature was reduced.
Cucumber yields were increased by 36% by soil warming at spring, but were not significantly affected when grown in the fall.
Economic and energetic studies showed that soil warming was profitable under the climatic conditions of Eastern Canada.
Authors
A. Gosselin, M.J. Trudel
Keywords
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