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A formula for calculating the potential photosynthesis of a closed crop surface is proposed, assuming that the leaves of the crop are not arranged in any definite direction. In the Netherlands, values for potential photosynthesis vary from 290 kg. CH2O/ha./day in June to 50 kg./ha./day in December. F.s.-R.B. (Abstract retrieved from CAB Abstracts by CABI’s permission)
C.T. de Wit (Fri,) studied this question.