ISHS Acta Horticulturae 76: Symposium on More Profitable Use of Energy in Protected Cultivation
A THEORY FOR OPTIMALIZATION OF PRIMARY PRODUCTION IN PROTECTED CULTIVATION: - II. PRIMARY PLANT PRODUCTION UNDER DIFFERENT OUTDOOR LIGHT REGIMES |
| Author: | H.Z. Enoch |
| Abstract:
Net photosynthesis rates of a C3 plant (spray carnations) grown in greenhouses with different transparancies are calculated for four locations representing the 60°, 50°, 40° and 30° northern latitudes. The monthly and yearly primary production rates are influenced mainly by the outdoor global solar radiation, the greenhouse transmissivity and CO2 concentration, but only to a minor degree by temperature. Three approaches to minimalization of energy input per unit yield of protected plant production - namely transport over climatic regions, storage over seasons and climate modifications - are analyzed. | |
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