KНMELYАNCНYSНYN Y. Optimum Unification of Variety, Method of Sowing and Fertilization in Energy-Saving Technology of Summer Rape Growing in the South-West Forest-Steppe of Ukraine

We consider the results of the investigation on influence of fertilizers (N0...120 Р0…75 К0...120) and sowing methods (entire and wide-row) of summer rape varieties Arion and Mykytenetsky on growth and development of plants, the formation of anabolic surface and photosynthesis potentials, changes of chlorophyll concentration and its component parts, pure photosynthesis productivity and yield.The representatives of the 3-d group form plant ballast but the yield basis - the 2-nd group.The following best variants are determined in the three-factors system of the investigation: 1) N80Р45К80 + Mykytenetsky variety of wide-row sowing, crop capacity - 18,6 centers from hectare; 2) N100Р60К100+ Mykytenetsky variety of wide-row sowing, crop capacity - 19,8 centers from hectare; 3) N120Р75К120+ Mykytenetsky variety of wide-row sowing, crop capacity - 20,6 centers from hectare The payback of the fixed variants according to power estimation was 36-42 % higher of 1 gigajoule of anthropogenic power in seed yield, the coefficient of power efficiency made up 2,4-2,7.In the structure of power losses the manures made up 48-50 % (8,2-12,4 gigajoule), fuel and mastic materials - 20-25 % (4,3 gigajoule), technical facilities - 15-18 % (3,1 gigajoule), man power - 4,6-5,7 % (1 gigajoule). The profit from 1 hectare of summer rape sowing according to the prices of Ukrainian market makes up 150-250 Hrv., of European market - 1900-2000; profitability - 14-30 % and 185-224%.When growing summer rape seeds on chernozem in South-West forest-steppe of Ukraine it is recommended to sow the Mykytenetsky variety with wide-row method and norms of fertilization N80…120Р45…75К80…120