ISHS Acta Horticulturae 268: IV International Symposium on CO2 in Protected Cultivation
EXPECTED USEFULNESS OF CO2 ENRICHMENT AND SHADING IN A DESERT CLIMATE - REFEREED PAPER - |
| Author: | I. Seginer |
| Abstract:
Preliminary calculations were carried out to explore the possibilities of greenhouse environmental control in a desert climate. A simple model of a photosynthesizing and transpiring crop was used in conjunction with a greenhouse model, to simulate the rate of photosynthesis along a typical hot and dry day. It was found that crop canopy temperature was the limiting factor of the assimilation process. Multi-level dynamic shading was effective in reducing canopy temperature. CO2 enrichment was effective only during the morning, before ventilation rate had to be increased in order to cool the crop. | |
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