EXPECTED USEFULNESS OF CO₂ ENRICHMENT AND SHADING IN A DESERT CLIMATE – REFEREED PAPER –

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.

IV International Symposium on CO2 in Protected Cultivation

I. Seginer

https://doi.org/10.17660/ActaHortic.1990.268.13