Yevpak I. Physical and chemical and agrochemical properties of typical black soil of the Right-Bank Forest-Steppe at minimal soil cultivation and biological agiculture

The thesis deals with the of study the influence of soil technologies protection of crops production on minimal soil cultivation and biological agriculture on the indices of low-humic loam black soil fertility on Aeolian soil. The influence of these factors on physical and chemical, agrochemical soil properties, agricultural crops productivity and crop rotation group productivity are researched in the thesis. It was proved experimentally that the subsurface tillage with straw and green manure application together with the application of mineral fertilizers in the middle rates improved the process of humus formation, increased nutrient content in soil solution dynamics of physical and chemical processes in the soil profile, that allowed to get additional yield of the grown crops. The soil conservation technologies, based on minimal soil tillage, provided the increase of agricultural crops productivity and decreased the cost for their growing and increased the level of profitability.