Radchenko L. Substantiation of the efficient sowing time and rates of winter and spring-winter wheat cultivated in the Crimean steppe

Object of researches - process of forming and achieving productivity and indexes of quality of wheat of winter and spring-winter depending on the basic elements of agrotechnics in the conditions of steppe Crimea. The purpose of researches is optimization of terms of sowing and norms of sowing for the sorts of wheat of different biotipov in the conditions of steppe area of Crimea, study of features of forming of productivity of wheat of spring-winter in the system of technological receptions of its growing and development of basic elements of the of high quality agrotechnics adapted to the modern economic terms. Methods of researches - the field; laboratory; computation; statistical. Results of researches - For a theory: First in the conditions of south Steppe of Ukraine the explored processes of growth, development and forming of harvest and quality of corn of wheat of dvuruchki, definite parameters of norms of sowing and terms of sowing of wheat of spring-winter at the autumn and spring sowing. Definite optimum terms of sowing and norm of sowing of a new variety of wheat of spring-winter Salome for the terms of steppe area of Crimea, which maximally expose potential of resistance to the cold and productivity. For practice: for the terms of steppe area of Crimea to the agricultural enterprises the recommended optimum terms of sowing and norm of sowing of sorts of wheat of winter and spring-winter, that allows to take to the minimum the negative influencing of terms of external environment and provide active growth, development and productivity of plants, and also receipt of high-quality corn without additional charges on growing. The use of results of research guarantees the receipt of additional net income from 1790 to 1940 to UAH./gа and increase of level of profitability of growing of wheat to 67%. The sphere of the use is the agricultural enterprises of south Steppe of Ukraine.