THE INFLUENCE OF DIFFERENT FERTILIZER SYSTEMS ON THE AGRO-ECONOMIC EFFICIENCY OF CULTIVATION OF CORN FOR GRAIN ON SOD-PODZOLIC SANDY LOAM SOIL

Abstract

In the field technological experience on sod-podzolic sandy loam soil it was found that the most agroeconomically effective was the N₄₅+₃₀P₄₅K₇₅ application on the background of straw with non-root treatment with Agropon С growth stimulant: the yield was 11.3 t/ha, conditional net income - 485 USD/ha, profitability - 174 % at the cost of 1 ton of corn grain gain 47 USD. With this system of fertilizer, the content of humus and mobile forms of phosphorus and potassium for the years of study remained at the initial level or close to the one.