The use of mineral fertilizers and microbiological preparations in pasture agrophytocenoses

The scientific work presents the results of studies conducted in 2022-2023 at the experimental field of the SZNIIMLPKh (the North-Western Research Institute of Dairy and Grassland Farming named after A. S. Emel`yanov) in the Vologda Region, on the influence of mineral fertilizers and microbiological preparations based on the gram-positive spore-forming bacterium Bacillus subtilis (Strain Ch-13) on the productive indicators of perennial grasses of pasture usage. It was found that the productivity of herbage in the first year of life was 0.87-2.36 t/ha of dry matter, 0.68-2.19 ths. of feed units, 8.6-25.5 GJ of metabolic energy, 0.07-0.3 tons of digestible protein, in the second year of life it was 2.55-11.03 t/ha of dry matter, 2-9.04 ths. of feed units, 25.2-111.6 GJ of metabolic energy, 0.15-1.2 tons of digestible protein. The design of pasture phytocenoses is aimed at obtaining the maximum possible, environmentally safe products that ensure a positive economy of dairy cattle breeding and animal health.