EFFICIENCY OF FERTILIZER APPLICATION FOR WINTER WHEAT UNDER CONDITIONS OF VELIKIE LUKI RAION OF PSKOV OBLAST
Organic and mineral fertilizers play an important role in obtaining stable crop yields and maintaining soil fertility as well. When sufficient balanced amount of macro- and microelements is introduced, it is possible to control numerous physiological and biochemical processes in plants, which plays an important role in the formation of the crop and its quality. By now, sufficient theoretical and practical experience has already been obtained, which allows the possibility of purposeful regulation of the plant mineral nutrition conditions for obtaining produce of a required quantity and quality. Agrochemical indicators of sod-podzolic soils cannot provide sufficient crop yields of proper quality. Therefore, it is impossible to exclude the use of mineral and organic fertilizers. The introduction of fertilizers into the soil is an important tool not only for obtaining stable yields, but also for maintaining the soil fertility. Field experiments are used to understand the processes of plant nutrition, to study the factors that affect the yield and quality of agricultural products. The object of research in our field experiment was winter wheat. The data obtained prove the high efficiency of the proposed fertilizer systems. The highest indicators of winter wheat yield were obtained when using mineral fertilizers on a sideral background after organic fertilizers. The yields of winter wheat grain against this background to the control variant was 78% higher. The use of mineral fertilizers has also had a positive effect on the elemental composition of winter wheat grain. The increase in the content of the main elements of nutrition was up to 17%.