EFFECT OF ARKSOIL NITROGEN AND ARKSOIL PHOSPHORUS BIOFERTILIZERS ON THE PRODUCTIVITY AND NUTRITIONAL VALUE OF WINTER RYE GRAIN IN THE NOVGOROD REGION

Abstract

The research was conducted in the Novgorod region in 2023-2025 on a sod-podzolic medium-cultivated soil in an experimental field at the Novgorod Research Institute of Agriculture, a branch of the St. Petersburg Federal Research Center of the Russian Academy of Sciences, on two backgrounds of mineral fertilizers (background 1 without fertilizers, background 2 based on the planned yield of winter rye grain). The object of the study was the Volkhova variety of winter rye and the biofertilizers Arksoil Nitrogen and Arksoil Phosphorus. The research demonstrated the high efficiency of the used microbial fertilizers. In the average of three years of research, in variant 8, on background 2, the best average annual grain productivity of 7.7 thousand tons of feed units per hectare was obtained when Arksoil Nitrogen and Arksoil Phosphorus were included in the technological operations twice. In this variant, the average annual nutritional value of grain fodder was 0.41 tons of digestible protein for cattle, with a content of 53.3 g per 1 feed unit, 63.0 GJ of exchange energy for cattle, and more than 5.7 tons of dry matter, with a low energy consumption of 2.7 GJ/ton and a high energy efficiency coefficient of 6.2.