EFFICIENCY OF APPLICATION OF NITROGENOUS NUTRITION OF THE WINTER WHEAT CULTIVATED ON THE SOD-PODZOL AND PALE YELOW SOIL

The results of studying efficiency of nitric extranutrition to the crops of winter wheat while planning different early-spring reserve of mineral nitrogen in the layer of 0-60 cm deep of the sod-podzolic and straw-coloured and sandy loam soil during the early-spring period are given in the article. We have established that productivity of winter wheat of the variety Kapylyanka, cultivated on sward-podzolic light-loamy soil after winter rape, depended on both the early-spring store of mineral nitrogen in soil and additional nitrogen feeding, applied in the phase of beginning of stalking and in the phase of stalking – beginning of ear-formation. It is established that the most productive cultivation of winter wheat occurs while planning early-spring reserve of mineral nitrogen in the soil layer of 0-60 cm deep at 180 kg/ha with two (II-second and III-third) extranutritions with nitrogen fertilizer in tne dose of 30 kg/ha of acting substance. When such nitrogen nutrition conditions, the average grain yield was 7.0 t/ha, marked by minimal energy consumption (334.6 MJ/n) and maximum bio-energy ratio (4.92), received the greatest amount of net income (210.96 USD / ha) and the maximum profitability (104%). With a higher level of early-spring nitrogen feeding (200 kg/ha), we have established reduction of grain productivity