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CROP ROTATION PRODUCTIVITY AND NITROGEN, PHOSPHORUS AND POTASSIUM BALANCE IN CROPPING ON SOD-PODZOLIC SANDY LOAM AND LOAMY SOIL

Abstract

It was revealed that average annual grain-grass rotation productivity on sod-podzolic loamy soil during lower phosphorus fertilization at 70 kg/ha and potassium fertilization at 20 kg/ha on 8,2-12,8 h of f.u./ha was higher than at the sod-podzolic sandy loam. Total nutrients removal with yields has increased with increasing of fertilizer doses; potassium removal was the most significant, then nitrogen, phosphorus, calcium were in descending order; it was observed at all experiment variants the depletion of mobile forms of potassium on sod-podzolic soil in the 18-80 mg/kg and 27-48 mg/kg on sandy loam soil; humus content varied in both soil variants within experimental error.

For citations:


Lapa V.V., Ivakhnenko N.N., Kulesh O.G. CROP ROTATION PRODUCTIVITY AND NITROGEN, PHOSPHORUS AND POTASSIUM BALANCE IN CROPPING ON SOD-PODZOLIC SANDY LOAM AND LOAMY SOIL. Soil Science and Agrochemistry. 2015;(1):115-134. (In Russ.)

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ISSN 0130-8475 (Print)