Abstract
Short-term photosynthesis measurements were performed in a cucumber crop in 3 experimental greenhouse compartments. The greenhouse was used as a measuring cuvette for the whole canopy. The calculated CO2 balance of the greenhouse was based on measurements of CO2 concentrations inside and outside, combined with on-line measurement of the ventilation rate. The method is fully described and results for 3 characteristic days are presented. Positive correlations were found between photosynthesis rate and both radiation and CO2 concentration. When measured environmental conditions were used as input data for a simulation model, the simulated and measured rates of photosynthesis generally showed a close similarity. (Abstract retrieved from CAB Abstracts by CABI’s permission)
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