Intensive technology of soybean cultivation based on the use of bacterial and mineral fertilizers

The results of three years of research on the effect of microbiological fertilizers and growth regulators on soybean productivity and quality in the Ryazan region are presented. The presowing treatment of seeds with the bacterial preparation “Nitragin KM, SP”, pre-sowing treatment of seeds and foliar top dressing according to the phases of development with the microbiological preparation “Organit N, Zh”, the silicon-containing growth regulator “ApaSil, P”. It was shown that the use of biologics “Nitragin KM, SP” (0.08 kg/ha, norm) + “Organit N” (1.5 l/ha) (seed treatment), “Organit N, Zh” (2 l/ha) (spraying in the branching phase) + “Organit N, Zh” (2 l/ha) (spraying in the budding phase) together with the use of mineral fertilizers helps to increase yields, improvement of soy structural elements.

The increased activity of microorganisms in the formation of carbon dioxide (CO2) in all variants with biological products is reliably confirmed. During the entire study period, the use of biological preparations had a pronounced positive effect on an increase in soybean yield by 0.31–0.50 t/ha compared with the control without treatment. On average, over the years of research (2022–2024) using biologics, the highest yield of soybeans was noted in option No. 3, where the yield was 3.12 t/ha, which exceeds the value of the control option by 19.1%. When using biologics, the weight of seeds from one plant increased by 1.3–2.0 g. The highest indicator was noted in variants No. 3 and No. 4 — 8.3 g each. In experimental variants No. 3 and No. 4, larger and more complete grains (weight of 1000 soybean seeds) were formed — 153.9–153.5 g, respectively. The weight of 1,000 seeds in variant No. 3 increased by 8.5 g compared to the untreated variant.

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