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Ventilation for supplying bean and tomato plants with CO2

, : Ventilation for supplying bean and tomato plants with CO2. Acta Horticulturae (162): 237-244

To investigate the effects of ventilation on both crops, a special dewpoint-conditioned chamber for measuring the CO2 gas-exchange of a plant stand (1.6 msuperscript 2) under natural light conditions was developed. The plants were supplied with a constant air-mass flow rate. From the daily course of photosynthesis the effect of reduced ventilation was seen to lower the CO2 concentration to below 150 p.p.m.

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