Bulba I. Influence of main of soil tillage and doses of nitric fertilizers on productivity of rape spring in irrigation condition of the south of Ukraine

Object of researches - Process of forming of productivity of rape spring on irrigated at different methods of basic till of soil and doses of nitric fertilizers, features of co-operation of these factors in the soil-climatic terms of south Steppe of Ukraine. The purpose of researches is establishment of features of forming of harvest of rape spring on irrigation earths at different methods of basic till of soil and doses of nitric fertilizers in south part of the Steppe area of Ukraine. Methods of researches - the field, laboratory, computation, statistical. Results of researches - For a theory: First for the terms of South of Ukraine action and co-operation of irrigation, till of soil and nitric fertilizer on growth and development of plants of rape spring is explored, forming of harvest, and also economic and power efficiency of elements of technology of his growing is definite. For practice: It is developed and technology of growing of rape spring, which provides forming of productivity of his seeds at the level of 2,2-3,0 t/ga due to combination of method of basic till of soil and doses of nitric fertilizers on irrigation, is applied in industry. The sphere of the use is the agricultural enterprises of south of Ukraine.