INFLUENCE OF SOWING TIME ON PRODUCTIVITY AND QUALITY OF GRAIN OF THE WINTER WHEAT

Results of researches on studying of influence of sowing time on productivity and quality of grain of grades of a winter wheat in the conditions of ecological zones of Kabardino-Balkar Republic are given in article. Researches were conducted in three various soil and climatic zones of Kabardino-Balkaria: steppe, foothill and mountain. Grades of winter soft wheat were objects of researches: Southerner, Tcheget, Winner. The purpose of researches - to study influence of sowing time on productivity and quality of grain. Results of researches have shown that grades differently reacted to sowing time, but the greatest productivity on them is received at crops in a steppe zone from September 25 to October 5 that makes 5,0-5,56 and 4,9-5,2Ô/hectare. At crops in later terms (on October 15 and 25) the productivity on grades decreases on 0,41-1,15Ô/hectare. The similar picture was observed also on other zones. As a result of the conducted researches optimum sowing time is established on zones of cultivation and grades, that is one of methods of formation of high productivity (5,0-5,5; 5,44-5,78 and 5,61-5,85Ô/hectare) and the best quality of grain. In the best options protein content in grades was 14,5 % and glutens of 30,4 %. Conditions of a steppe zone, warm and dry weather during the spring and summer period promoted receiving better grain.

the winter wheat, grades, sowing time, productivity, protein, gluten, natural mass of grain, weight is 1000 grains

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