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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Agronomic performance of urea in pastilled compositions applied on maize fertilization.
Autores:  SANTOS, W. M. dos
BARROS, I. de
PACHECO, E. P.
FERNANDES, M. F.
SOUZA, H. N. de
Data:  2021-08-10
Ano:  2020
Palavras-chave:  Nitrogênio
Fertilizante Nitrogenado
Enxofre
Milho
Adubação
Nitrogen
Nitrogen fertilizers
Sulfur
Resumo:  Urea pastillation is a technology that allows the composite mixture with other elements like sulfur and zinc. This study aimed to provide recommendations of N rates, and to assess the agronomic performance of N fertilizers, including pastille urea and its composition associated with S and Zn, top-dressed on maize. Two experiments were set up in the harvests of 2014 and 2015 in an Acrisol and a Lixisol. The experimental design was the randomized blocks with three replicates in a split-plot arrangement and an additional treatment (no N). In the plot, three N applications rates were tested (75, 150 and 300 kg ha-1); while in the subplots, seven fertilizers were tested, including conventional and pastilled ones. The greater was the N rate applied, the higher were the leaf N content and grain yield of maize. The S content in the leaves increased with the increasing S doses applied with the tested fertilizers. Yields with ammonium sulfate were higher than with prilled urea, pastille urea and pastille urea with elemental S in the harvest mean on the Haplic Lixisol. The rate that corresponded to the maximum economic efficiency for UR was 128 and 119 kg N ha-1 for Haplic Acrisol and Haplic Lixisol, respectively. The recommended dose of ammonium sulfate was 119 kg ha-1, since it provided the greater incomes for both sites.
Tipo:  Artigo de periódico
Idioma:  Inglês
Identificador:  Revista Brasileira de Ciências Agrárias, v. 15, n. 3, e6914, 2020.

http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133393
Direitos:  openAccess
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