A special role in the world and in the Far Eastern region, in particular, is assigned to soy in connection with the need to produce high-quality protein food for the population and animal feed. But to obtain stable high yields of this crop, it is necessary to protect the crops from a complex of diseases that leads to the loss of 15-35 % of grain. The biological method is becoming a priority in the adaptive technology of soybean cultivation. Therefore, the purpose of the research was to develop a technology for the use of biological means of protecting soybeans, which reduce the incidence of diseases and increase productivity to obtain environmentally safe products. The research was carried out in 2017 – 2018 in the crop rotation (grain crop, soybean) of the Department of Selection and Seed Production of Field Crops of the Far Eastern Research Institute of Agriculture. The objects of the study were the zoned soybean variety Batya, a chemical grain mordants – TMTD (concentrate of water suspension) and Maxim (suspension concentrate); biological agents – Immunocytophyte (tablets); Zircon (solution); Bisolbisan (liquid) and Biosil (water emulsion); liquid leaf fertilizer Nutri-Phait, PK with water softener Spartan, as well as the chemical fungicide Optimo (emulsion concentrate). The greatest fungicidal activity against root rot was shown by Zircon (solution) and Maxim (suspension concentrate); against Septoria – Zircon (solution) and Nutri-Phite, PK with water conditioner Spartan; against Peronosporosis – Zircon (solution); Nutri-Phait, PK with water softener Spartan and Immunocytophyte (tablets). In relation to the control variant, when Zircon (solution) and Nutri-Phite, PK with water softener Spartan were applied in the treatment of seeds and vegetative plants a significant increase in the soybeans yield were 860 and 960 kg/hа respectively.

Tishkova Anna G.

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