Influence of background of mineral nutrition and receptions of major treatment of soil when cultivating spring wheat in conditions of the forest-steppe zone of the middle Volga region

© 2019 IOP Publishing Ltd. All rights reserved. Discussion issues on partial replacement of mineral fertilizers with crushed straw and crop siderate, as well as minimizing soil tillage, are often linked by researchers to an increase in biological and enzymatic activity, at the same time, and with an increase in the number of agronomically important physiological groups of soil-ammonifying, nitrifying, denitrifying bacteria and cellulose - forming microor-ganisms that contribute to higher yields and lower production costs for the cultivation of crops. In result of the conducted researches we obtained the highest yield of all possible experience (of 3.09 t/ha) and the best indicators of quality of grain of spring wheat also were obtained on the variant with the introduction N60P60K60, chopped straw predecessor and green manure on subsurface loosening. In addition, in this embodiment, the best were the economic indicators, net income - RUB 2369,6 1 ha, and the level of profitability of production amounted to 34.3%