FORMATION OF SEED YIELDING CAPACITY AND QUALITY OF A MID-SEASON SOYBEAN VARIETY UNDER THE INFLUENCE OF BIO-PREPARATIONS IN THE AMUR RIVER REGION

The data on the influence of a preparation of natural origin based on arachidonic acid on the biochemical composition of seeds and plant productivity of the mid-season soybean variety VNIIS 18 are discussed. The research was carried out in 2022 and 2023 on the experimental field of the Federal Research Center “All-Russian Research Institute of Soybean” in the Village of Sadovoye (Tambovskiy District). The experimental design included the following variants: 1) control (no treatment); 2) seed treatment before sowing (BioFish 20 mL t); 3) seed treatment before sowing (BioFish 20 mL t) + treatment of growing plants (herbicides + BioFish 5 mL L). The research goal was to study the effect of the biological product of natural origin on seed biochemical composition and the productivity of the mid-season soybean variety VNIIS 18 under the conditions of the Amur Region. A positive effect on the seeds was revealed after pre-sowing treatment with a preparation of natural origin; it led to decreased stress effect of the herbicide and had a positive effect on the biochemical composition. The content of total protein and fat in seeds increased by 2.27% and 0.65%, respectively, as compared to the control. The research revealed the positive effect of the BioFish preparation on the formation of plant productivity. The biological yield of soybean in the variants was from 2.65 (seed treatment) to 2.70 t ha (combined treatment). In the control, this figure was 2.19 t ha.