Plant and Soil Science

Fertilizers are one of the most effective and fastest factors in increasing the yield of winter wheat and improving the quality of its grain. During the fertilizing of wheat the special attention is paid to nitrogen ensuring, especially its easily accessible forms in the early spring. Was investigated the effects of different types of nitrogen fertilizers, which were application in early spring on the background of the main fertilizer. It was established that the maximum of the yield for wheat grain (7.16 t / ha) is obtained by the background (N30P80K80) and early spring application of the urea-ammonium nitrate with sulphur (N30) on the permafrost soil. Also in this variant was obtained the grain of the best 1st grade of quality - contents of protein 14.4% and contents of gluten 32.1%. On the variant of background of N30P80K80 with early spring application of UAN-32 or sulphur-containing fertilizers (ammonium sulphate and ammonium sulphate with humates), the grain corresponds to the 2nd grade of quality. 

nitrogen fertilizers, early spring fertilizer, wheat yield, harvest structure, grain quality