Влияние различных уровней обеспеченности дерново-подзолистой суглинистой почвы обменным магнием и доз минеральных удобрений на урожайность и биохимическое качество зерна кукурузы | Effect of different levels of exchangeble magnesium in the podzoluvisol loam soil and mineral fertilizers on the yield and biochemical quality of corn grain
2013
Tavrykina, O.M. | Bogdevich, I.M. | Putyatin, Yu.V. | Tretyakov, E.S. | Dovnar, V.A. | Markevich, D.V., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
In course of the research there was studied the influence of different exchangeable magnesium content in the podzoluvisol loam soil (1 n KCI) 74-120-181-240 mg Mg/kg and varying Ca:Mg ratios 10.7-6.5-3.9-2.7 on crop yield and biochemical quality of corn (Zea mays) grain. The research was realized in the conditions of the Republic of Belarus in 2010-2011 in Minsk region. As a result of model stationary field experiment it was found increasing corn grain yield on 5-13% (6.9-15.2 c/ha) in the soil with Mg content 74-181 mg/kg and equivalent Ca:Mg ratio 3.9. Subsequent increasing exchangeable magnesium content to 240 mg/kg and narrowing Ca:Mg ratio to 2.7 was result to small decrease corn grain yield. Carring out foliar spray of corn plant by magnesium sulfate was effective at exchangeable magnesium content 74 and 120 mg/kg with yield response 7.4 and 6.6 c/ha correspondingly. Raw protein content in corn grain essential increased (on 0.9-1.5%) in result of application basic fertilizer system N110+30P60K120 and sulfur fertilizers, highest raw protein (9.6%) was obtained at 181 mg/kg exchangeable magnesium content. Amino acid composition of corn protein and biological value of critical and essential amino acids were change a little against investigate factors.
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