TECHNIQUES FOR INCREASING THE RESOURCE POTENTIAL OF LEACHED CHERNOZEMS OF THE MIDDLE VOLGA REGION
The results of five-year research under the soil and climatic conditions of the Middle Volga region show that the complex application of agrochemicals (liming + phosphorite application + NPK for the planned 4 t/ha of the spring wheat grain yield) increases the accumulation of dry mass of crop-root residues from 1.44 to 2.37 t/ha (by 64 %), improves mineralization of organic matter by 10.1 %, enhances the formation of structural units and compensates the removal of nutrition elements. On average, over five years, the combined use of the three above-mentioned agrochemicals provided 3.77 t/ha of high-quality spring wheat grain, which is 94.3 % of the planned yield.