DURATION OF AFTEREFFECT OF PHOSPHORIC AND POTASH FERTILIZERS ON CROP PRODUCTIVITY AND SOD-PODZOLIC SANDY LOAM SOIL’S FERTILITY

V. V. Lapa; N. N. Semenenko; E. G. Mezentseva; N. N. Ivakhnenko; A. A. Hracheva

DURATION OF AFTEREFFECT OF PHOSPHORIC AND POTASH FERTILIZERS ON CROP PRODUCTIVITY AND SOD-PODZOLIC SANDY LOAM SOIL’S FERTILITY

V. V. Lapa, N. N. Semenenko, E. G. Mezentseva, N. N. Ivakhnenko, A. A. Hracheva

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Abstract

The article presents the results of long-term research to assess the impact of fertilizer systems on crop productivity, the duration of aftereffect of phosphoric and potash fertilizers and fertility of sod-podzolic sandy loam soil. It was found that a prolonged deficiency of one or another mineral nutrition’s element affects the agrochemical degradation and soil fertility. Studies have shown that when phosphoric and potash fertilizers are excluded from the fertilizer system, annual losses of mobile phosphorus and potassium are about 3 and 8 mg/kg of soil per year, respectively.