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EFFECT EXCHANGEBLE MAGNESIUM IN THE PODZOLUVISOL LOAM SOIL ON THE YIELD AND QUALITY OF CORN GRAIN

Abstract

The two years studies of grain corn yield responses in model field experiment with exchangeable magnesium content in soil from low - 50 mg∙kg-1 to high - 265 mg∙kg-1 and varying К:Mg and Ca:Mg ratios 2,2-16,9:1 and 0,12-1,46:1 correspondingly has been presented. It was found the highest grain yield - 10,8-14,1 t∙ha-1 at N110+30Р60К120 application was obtained at Ca:Mg ratios 5,1-5,7 and exchangeable magnesium content 145-160 mg∙kg-1. It was found that increasing exchangeable magnesium content in soil from 50 up to 265 mg Mg/kg raised magnesium concentration in leaves of corn plants on growth stage of 6-8 leaves up to 1,7 times. At the same time concentration of nutrientes - calcium and potassium in corn plants leaves decreased whith increasing exchangeable magnesium content in soil.

For citations:


Tavrykina O.M., Bogdevich I.M., Putyatin Yu.V., Tret’Yakov E.S., Dovnar V.A., Markevich D.V. EFFECT EXCHANGEBLE MAGNESIUM IN THE PODZOLUVISOL LOAM SOIL ON THE YIELD AND QUALITY OF CORN GRAIN. Soil Science and Agrochemistry. 2012;(2):135-143. (In Russ.)

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ISSN 0130-8475 (Print)