Microbiological preparations based on strains of associative bacteria in the cultivation of spring wheat in Central Yakutia

Oktemsky branch of the Arctic State Agrotechnological University, Republic of Sakha (Yakutia), Russia

Abstract

The studies were conducted in Central Yakutia on permafrost taiga-pale-yellow soils with a low humus content from 2016 to 2020. The use of biological products of associative bacteria is an environmentally friendly way to increase crop yields and improve soil fertility. The effect of pre-sowing inoculation of spring wheat seeds with various biological preparations of associative bacteria: Rhizoagrin, Mobilin, Mizorin was studied. The responsiveness of the culture to the use of biological preparations was noted: inoculation of seeds contributed to the formation of grain yield of spring wheat. In the experimental variants, a significant increase in the yield of spring wheat grain was noted — on average up to 1.6 t/ha in the variant using the preparation Mizorin. Pre-sowing inoculation of spring wheat seeds contributed to increased plant growth in height (up to 14%), an increase in the amount of grain (up to 16%), as well as an increase in the mass of roots (up to 35%), leaves (up to 60%), inflorescences (up to 24%), straw (up to 48%). The use of the studied biopreparations based on strains of associative bacteria had a positive effect on both the growth and development of plants and an increase in the yield of spring wheat grain.