Micronutrient application and residual effect on corn production in a no-tillage system
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Data
2012-12
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Resumo
Applying micronutrients to the soilhas a residual effect, reducing the fertilizer applications that
are needed under a no-tillage system. The present study determined the residual effect of applying
micronutrient-containing fertilizer to soil used for corn production under a no-tillage system. The field
study was conducted in Red Latosol in Goiânia, Goiás, Brazil. The experiment was a conducted in
a randomized block design with five treatments and four replicates. The fertilizer used in the study
contained the micronutrients Mn, Zn, Fe, Cu, and B in powder form and was applied atfour doses (33.33
kg ha -1 , 66.66 kg ha -1 , 133.32 kg ha -1 , and 66.66 kgha -1 plus 1.4 t ha -1 of calcium oxide); a control to
which this fertilizer was not applied was used as a reference.The grain yield was measured, and leaf
analysis and soil chemical analysis were conducted to evaluate the fertilizer efficiency and residual
effect. The soil Zn content remained higherthan pre-experiment levels. Leaf analysis indicatedhigher
absorption at the sites with high soil Zn content. The highest yield was obtained when applying 69.08 kg
ha -1 of micronutrient-containing fertilizer. The micronutrients Mn, Fe, Cu, and B exhibited no significant
effect on corn yield, leaf nutrition, or soil residue.
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Palavras-chave
Zea mays, Cerrado, Mineral nutrition, Zea mays, Cerrado, Nutrição mineral
Citação
BARBOSA, Juliano Magalhães; REZENDE, Cláudia Fabiana Alves; LEANDRO, Wilson Mozena; RATKE, Rafael Felippe; FERNANDES, Eliana Paula. Micronutrient application and residual effect on corn production in a no-tillage system. Semina: ciências agrárias, v. 33, n. 6, p. 2187-2198, Nov./Dec. 2012.