Vasilenko N. Performance and quality seed of varieties rytsyny at different times of sowing density and plant standing in the southern steppe of Ukraine

The object of researches is the plants of Ricinus. Purpose of researches - to define productivity and quality of seeds of sorts of Ricinus at different terms of sowing and density of standing of plants in South Steppe of Ukraine. Methods of researches - the field, laboratory, visual and gravimetric, statistical. Results of researches: 1. For a theory - comparative researches of sorts of Ricinus Hgromada, Hortitska 1, Hortitska 3 and the complex influencing of terms of sowing is considered, densities of standing of plants on growth, development and forming of productivity of sorts of Ricinus of different groups of ripeness are First conducted, the basic agrotechnical receptions of their growing are optimized. 2. For practice - Results of researches of steel by a basis for development of elements of technology of growing of Ricinus of terms of sowing and gustoti standing of plants and verification of them in production terms. The conducted researches allowed to find out influencing of basic factors which affect forming of productivity. The sphere of the use is the agricultural enterprises of south of Ukraine.