Corn nutrition and yield as a function of boron rates and zinc fertilization
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Univ Estadual Londrina
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Resumo
Brazilian Cerrado soils are commonly deficient in boron (B) and zinc (Zn). It is still debated whether B and Zn interaction has a synergistic or antagonistic effect on the absorption thereof. Thus, we conducted this study to evaluate the effect of boron rates (0, 1, 2, 3, and 4 kg ha(-1), as boric acid), with or without zinc fertilization (2 kg ha(-1) Zn, as zinc sulfate), on corn nutritional status and grain yield. We also assessed the residual effect of such fertilization on the fall corn crop grown on an Oxisol in a no-tillage system. A synergistic effect between B and Zn was observed on corn nutritional status when applied to the soil at rates of up to 2 kg ha(-1), with higher soil contents resulting from the interaction between these micronutrients. Zinc fertilization and increasing boron rates had no significant influence on corn grain yield in both spring/summer and fall crops, grown on a boron-deficient, clayey soil of Cerrado biome.
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Borated fertilizer, Boric acid, Micronutrients, Nutrient concentrations, Zea mays L.
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Inglês
Citação
Semina-ciencias Agrarias. Londrina: Univ Estadual Londrina, v. 40, n. 6, p. 2545-2559, 2019.
