Plant and Soil Science

The article presents the results of studies on the effectiveness of processing of winter wheat crops with modern growth-regulating drugs on the background of mineral fertilizers, carried out in 2011–2016 on the southern bleak soils in the southern Steppe of Ukraine. It was studied the influence of varietal characteristics of winter wheat and nutrition variants on the formation of yield structure and grain yield. It was determined the fertilization in the presowing cultivation of two winter wheat varieties at a dose of N30P30 (background) and the use of foliar dressing crops at the beginning of the resumption of spring vegetation and the beginning of the plant stooling by preparations Organic D2 and Escort-bio created favorable conditions for the formation of the best indicators of the yield structure, and hence the highest level of grain yield of the studied varieties. For example, in average for years of cultivation, in given nutrition variants the grain yield of the Kolchuga variety was formed at a rate of 4,42-4,48 t / ha and the grain yield of the Zamozhnist variety at a rate of 4,96-4,99 t / ha. These indicators exceeded the control by 52.9-55,0 % and 62.6-63.6 % respectively. The superior of the studied winter wheat varieties by a set of indicators was the Zamozhnist variety.

wheat, variety, plant nutrition, growth-regulating drugs, the yield structure, grain yield