Abstract
The article presents the results of studies on the effect of the sowing time of different varieties of winter barley and trace element compounds used for pre-sowing seed treatment on the formation of leaf area, photosynthetic potential and the synthesis of absolutely dry plant mass. It is noted that a more productive formation of leaf area, an increase in the photosynthetic potential and a high productivity of photosynthesis, under adverse conditions of water and thermal conditions, is most fully provided by the Ninth Shaft variety in comparison with other varieties.
Keywords:
barley varieties, sowing dates, trace elements, leaf area, mass of absolutely dry matter.