Koval S. The productivity of flax oil after various forecrops in the right-bank Forest-Steppe of Ukraine

The object of the research is changes of indices of soil fertility, weed infestation of areas under common flax and the formation of yield productivity of the flax after different predecessors. The aim of the research is to evaluate different predecessors according to their influence on the conditions of flax growing and productivity. The methods of the research are field, laboratory, statistical, economic and mathematical. The place of the common flax in crop rotation was determined with the help of matching its predecessors which improve yield productivity of crops. Under conditions of the Right-Bank Forest-Steppe of Ukraine it is recommended to sow common flax after spring wheat, barley and peas along with the application of mineral fertilizers at the rate of N45P45K45. The research results were introduced at the farm limited partnership "Agrariy" of Uman district, Cherkasy region on the area of 43ha. The sphere of the research application is agrarian production.