The effect of biological preparations on the growth and development of soybean plants in the steppe zone

The article presents the results of a trial of the rhizobial drugs Nitrofix P (Brazil) and Nitrofix Z (Argentina) during pre-sowing processing of soybean seeds. The research was conducted in the steppe zone of the Altai Territory in 2022-2023. Pre-sowing treatment of seeds with rhizobial preparations contributed to a more harmonious and intensive germination of seeds. It was found that pre-sowing seed treatment contributed to an increase in the duration of the growing season of plants relative to the control variant by 2 days (the variant with the treatment of Nitrofix P) and by 3 days (the variant with the treatment of Nitrofix G).