Gumeniuk О. Agrochemical substantiation of mineral fertilizers application and Filazonit MC application under table potatoes on dark gray opodsolic soil in conditions of Left-Bank Forest-Steppe of Ukraine.

The optimization of the mineral nutrition and fertilization of table potatoes and establish the optimal elements for growing technology of table potato for production of the highest possible tubers yield and tubers quality for crop specialization in farms (excluding cattle breeding) were investigated. The influence of biodestructor Filazonit MC on the background of mineral fertilizers (N120P100K160) in the variant with straw (5 t/ha), and without it on agrochemical indexes of dark gray podzolic content of soil macronutrients in table potatoes plants was researched. Application of biodestructor Filazonit MC on the background of mineral fertilizers (N120P100K160) increased the overall microbiological activity of dark gray podzolic soil. Application of Filazonit MC in rate 15 l/ha increased the degree of decomposition of flax linen for growing the variety Rosary to 51.8 %, and variety of Dnepryanka – to 52.2%. The highest tubers yield was got in variant with application of Filazonit MC in rate 10 l/ha in condition of the straw (5 t per ha) using and of the mineral fertilizers application (N120P100K160). It was 40.0 t/ha for variety the Rosary and it was 31.5 t/ha for variety Dnepryanka. Absent of the straw into system of potato fertilization increased tubers yield to 42,8 t/ha for variety Rosary and to 36,2 t/ha for variety Dnepryanka. The main indexes of the quality of potato tubers and economic efficiency and bioenergy efficiency of technologies for the growing of the table potatoes were determined. The main results of the investigation have practical testing and were recommended for practical using it in agriculture practice.