Malyarchuk V. Irrigation efficiency basic soil for growing sunflowers in the south of Ukraine

The object of researches is the process of forming of productivity of sunflower on irrigation and without watering at different ways of basic till of soil in a crop rotation. The purpose of researches is establishment of efficiency of irrigation, methods and depth of basic till of soil at growing of sunflower on the irrigated and unwatering earths of south Steppe of Ukraine. Methods of researches - the field; laboratory; statistical; computation-comparative. Results of researches - For a theory: First in the conditions of south of Ukraine on livery middling suglinkovoy soil the efficiency of irrigation, methods and depth of basic till of soil under sunflower at different systems of basic till in a crop rotation is studied. For practice: For the terms of south Steppe possibility of application of the differentiated system of basic till of soil in a crop rotation is experimentally proved, with ploughing on a depth 28-30 cm under sunflower, that provides the improvement of the water-air and nourishing modes of soil and fitosanitarnogos1 state of sowing, and also t/ha is instrumental in the receipt of stable productivity of sunflower at the level of 2,4-3,5. The sphere of the use is the agricultural enterprises of south region of Ukraine.