Suvorov M. Agrochemical estimation of fertilizers with long effect during the cultivation of potato on dark-grey podzolic soil of Left-Bank Forest Steppe of Ukraine

The results of field and laboratory studies represent the influence of fertilizers with long effect on nitrogen, phosphorus and potassium regimes of dark–grey podzolic soil of Left-Bank Forest Steppe of Ukraine. The influence on the intensity of biochemical processes in plants of potato, it productivity and product quality are displayed. Coefficients of using the nutritional elements of the fertilizers, economic and energy efficiency of it's use in the Left-Bank Forest Steppe of Ukraine were determined. It is found that the use of fertilizers with long effect contributed to optimizing of mineral nutrition of potato, increase the content of the basic macronutrients in plant tissues, enhancing their photosynthetic activity. The productivity were increased and the structure of the harvest were improved. Improved physico-chemical and agro-chemical properties of the soil. Also physico-chemical and agro-chemical properties of the soil were improved. The use of MAP–treated Avail, and composition complex fertilizer provides a high yield of potato and improving the profitability of the crop. According to the actual research the recommendations for the production of potato on dark–grey podzolic soil of Left-Bank Forest Steppe of Ukraine were developed.