THE IMPACT OF NUTRITION OPTIMIZATION ON CROP YIELD OF WINTER WHEAT VARIETIES (TRITICUM AESTIVUM L.) AND MODELING OF REGULARITIES OF ITS DEPENDENCE ON STRUCTURE INDICATORS

摘要

The article presents the results of studies conducted in 2011 -2016 years onthe southern chernozem in the southern Steppe of Ukraine, studied the efficiencyof processing winter wheat crops modern growth-regulating drugs in the mainperiods of vegetation of the crop on the background of mineral fertilizersapplication. It was determined that the introduction of pre-sowing cultivation ofwinter wheat fertilizer in a dose of N30P30 (background) and the use of foliarfertilizing of crops at the beginning of the resumption of spring vegetation andthe beginning of stooling complex organic fertilizers Organic D2 and Escort-biocreated favorable conditions for the formation of optimal indicators of thestructure of the crop and, accordingly, a high level of grain yield of the studiedvarieties. In the variants of fertilizer Organic D2 and Escort-bio plants of winterwheat variety Kolchuga formed 4,42-4,48 t / ha of grain, and plants ofZamozhnist formed 4,96 – 4,99 t/ha, which exceeded the control by 52,9 – 55,0and 62,6-63,6%, respectively. From the studied varieties of winter wheat on a setof indicators, it was determined Zamozhnist as the best variety.