Photosynthetic activity of Georgiya soybean crops in the conditions of the non-chernozem zone depending on biological preparations application

The article presents the results of a study to determine the features of the formation of the Georgiya soybean photosynthetic apparatus when introducing biopreparations in the conditions of the Non-Chernozem zone. It was found that biopreparations contributed to the greatest increase in leaf area. The vegetation period of soybeans was 106 days in 2023, 103 days in 2022. In the interphase period (flowering – physiological ripening of soybeans), photosynthesis processes were productive in 2023 at the hydrothermal index is 1.46. The maximum stability in obtaining a high yield was demonstrated by this complex of biological preparations: Tirada, SK – 2.0 l/t + Tabu, VSK – 1.0 l/t + Nitragin KM, SP – 0.08 kg/hectare seed rate + Organit N, Zh – 1.5 l/t – seed treatment before sowing + Organit N, Zh – 2 l/ha – treatment of plants in the branching phase + Organit N, Zh – 2 l/ha – treatment in the budding phase, which provided an increase in soybean yield, exceeding the control variant by 14% over a two-year period, which confirms the stability of its effectiveness in all years of research.