Petkevich Z. Agroecological estimation of rice varieties belonging different ripeness groups in conditions of the south of Ukraine

Object of researches: crops of rice varieties belonging different ripeness groups, processes of growth, development and formation of grain yield and its quality. Purpose of researches: productivity of ice varieties belonging different ripeness groups, speed of course physiological processes in plants depending on agroclimatic conditions of cultivation zone. Methods of researches: field, laboratory and methods of mathematical statistics. Results of researches: 1) for a theory - parameters of rice productivity model are received; 2) for practice - at rice cultivation of varieties belonging different ripeness groups is recommended in view of meteorological conditions which will provide decrease in influence of adverse weather conditions in separate years for most effective realization of varieties potential opportunities. Sphere of use: substantive provisions of researches can find practical use in ricegrowing economy with different patterns of ownership in southern region of Ukraine.