Gontaruk V. Agrotechnical measures of increase of productivity of maternal lines of sunflower on the hybridization plots in the conditions of South Ukraine

The object of researches is the processes of forming and realization of productive potential of maternal lines of sunflower, dynamics of growth processes, features of forming of productivity of sowing and high-quality properties of seeds. The purpose of researches is establishment of influencing of terms of sowing, densities of standing of plants and layout charts of paternal components on productivity of maternal lines of sunflower on the irrigated areas of hybridization in the conditions of south of Ukraine. Methods of researches - the field; laboratory; the laboratory-field; comparative; statistical. Results of researches - For a theory: First for the terms of South Steppe of Ukraine influencing of terms of sowing is set, densities of standing of plants and charts of sowing on productivity of new maternal lines of sunflower. For practice: It is developed and improved elements of technology of growing of maternal lines of sunflower on the irrigated earths of steppe area of Ukraine, which provide the receipt of the burst performance of plants, optimization of the use of all types of resources and defence of environment. The sphere of the use is the agricultural enterprises of south of Ukraine.