THE INFLUENCE OF FERTILIZATION SYSTEMS ON THE PRODUCTIVITY OF CROP ROTATION AND AGROCHEMICAL INDICATORS OF SODDY-PODZOLIC SANDY LOAM SOIL

Abstract

The influence of by products ploughing and mineral fertilizer doses on the crop rotation productivity and agrochemi-cal indicators of sod-podzolic sandy loam soil is studied. It’s established that autumn application of a compensatory dose of nitrogen to the straw didn’t ensure the increased productivity of crop rotation. It’s shown that application of correct doses of phosphorus and potassium fertilizers taking into account the phosphorus and potassium from a straw predecessor didn’t bring about the reduction of the productivity of crop rotation in comparison with the application of full doses of fertilizers and allowed saving P₆₀ and K₃₆₀.