Mahmoud M. Growth, development and yield of the winter barley breeds, depending on the crop technology elements on the territory of Ukrainian northern Steppe

The object of study - typical winter barley varieties Snowstorm, Winter, Laborer, Selena star, Borisfen and varieties are alternate - Rosava, Worthy, Master, Casket, Tutankhamun, Seim, Osnova, Taman. Purpose - develop the elements of technology of cultivation of winter barley and winter varieties of typical varieties are alternate providing reception of 7,5-8,0 t/ha of high-quality grain. Methods - general science, special agronomic. Results: The technological measures typically grow winter barley varieties and varieties are alternate predecessors, allowing for different conditions in the region more fully realize their genetic potential and get 7,5-8,0 t/ha of grain quality with high profitability. The research results have been tested in a production farms Luhansk region in the area of 53 hectares and have confirmed the effectiveness of the proposed elements of technology of cultivation of winter barley. The novelty - first theoretically and experimentally proved and confirmed the possibility of obtaining a stable high grain yield of winter barley in the northern steppes of Ukraine by selecting varieties that are adapted to the specific conditions of the region, taking into account their growth, development and yield formation and growth of optimal process parameters (time of sowing and norms seeding after various predecessors) typically winter varieties and varieties are alternate. Industry sector - agriculture. Sector – Agriculture.