ПІДВИЩЕННЯ ПРОДУКТИВНОСТІ ФОТОСИНТЕЗУ СІЛЬСЬКОГОСПОДАРСЬКИХ КУЛЬТУР ЗАЛЕЖНО ВІД ОБВОДНЕНОСТІ ЇХ ЛИСТКІВ ЗА МІКОРИЗАЦІЇ КОРЕНЕВОЇ СИСТЕМИ

Abstract

Purpose. To investigate the effect of pre-sowing seed treatment with vesicular-arbuscular mycorrhizal (VAM) and bacterial preparations on the leaf water content and photosynthetic productivity of agricultural crops (winter wheat, corn, sunflower and soybean) under mycorrhization of their roots. Methods. Field, laboratory, and statistical. Results. The results of studies on determining the effect of pre-sowing treatment of seeds of such agricultural crops as soft winter wheat, common corn, annual sunflower and soybean culturally vesucular-arboscular drugs Mikovital (mushroom Tuber melanosporum VITTAD.) Micofrend (mushroom Trichoderma harzianum. (bacteria Bacillus subtilis Cohn.) on the water content of leaves and the productivity of photosynthesis of plants by mycorrhization of their root system. It was found that the implementation of this measure provides a steady increase in the water content of leaves and the productivity of photosynthesis of agricultural crops. In particular, the water content of leaves of soft winter wheat plants, common corn, annual sunflower and cultivated soybeans for the use of the preparations Mikovital, Mikofrend and Florobatsilin was 1.6–77.3 % more than in the control. According to the indicators of the water content of the leaves, the productivity of photosynthesis of crops increased by 8.3–57.1 % in comparison with the control, which indicates a significant effect of this factor on the growth and development of plants. Conclusions. Pre-sowing seed treatment with vesicular-arbuscular products Mikovital, Mycofrend, and bacterial product Florabacillin promotes a steady increase in the leaf water content and photosynthetic productivity in winter bread wheat, maize, annual sunflower, and soybean.