Articles
A THEORY FOR OPTIMALIZATION OF PRIMARY PRODUCTION IN PROTECTED CULTIVATION: – II. PRIMARY PLANT PRODUCTION UNDER DIFFERENT OUTDOOR LIGHT REGIMES
Article number
76_3
Pages
45 – 58
Language
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.
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.
Authors
H.Z. Enoch
Keywords
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