Open AccessNutritional assessment and yield of corn as a function of boron rates and zinc fertilization
Author(s) -
Lais Meneghini Nogueira,
Marcelo Carvalho Minhoto Teixeira Filho,
Márcio Mahmoud Megda,
Fernando Shintate Galindo,
Salatiér Buzetti,
Cleiton José Alves
Publication year - 2019
Publication title -
semina. ciências agrárias
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.268
H-Index - 25
eISSN - 1679-0359
pISSN - 1676-546X
DOI - 10.5433/1679-0359.2019v40n6p2545
Subject(s) - oxisol , zinc , human fertilization , micronutrient , agronomy , boron , boric acid , chemistry , zoology , crop , soil water , biology , ecology , organic chemistry
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.