SOME PHYSIOLOGICAL ASPECTS OF CO₂-APPLICATION IN GLASSHOUSE CULTURE

Carbon dioxide is an important raw material for the process of photosynthesis. Therefore, it is logical to assume that CO₂-effects upon crop productivity are primarily caused through enhanced rates of photosynthesis. In the first paragraph are discussed some photosynthetic properties of leaves at a range of horticulturally interesting light intensities. In the second paragraph the CO₂-transport in and near the plant is compared with the transport in the glasshouse atmosphere. The potential photosynthetic rate of a crop is approximated for various values of the physiological and external transport resistance. Finally, the probable importance of non-photosynthetic CO₂-effects upon crop growth and development is briefly indicated.

Effect of CO/SB2/BS upon photosynthesis of single eaves.