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|Research center of Embrapa/Collection:||Embrapa Gado de Leite - Artigo em periódico indexado (ALICE)|
|Type of Material:||Artigo em periódico indexado (ALICE)|
|Authors:||SANTOS, W. M. dos|
BARROS, I. de
PACHECO, E. P.
FERNANDES, M. F.
SOUZA, H. N. de
|Additional Information:||WADSON DE MENEZES SANTOS, Universidade Federal Rural do Rio de Janeiro; INACIO DE BARROS, CNPGL; EDSON PATTO PACHECO, CPATC; MARCELO FERREIRA FERNANDES, CPATC; HERALDO NAMORATO DE SOUZA, Petrobras.|
|Title:||Agronomic performance of urea in pastilled compositions applied on maize fertilization.|
|Publisher:||Revista Brasileira de Ciências Agrárias, v. 15, n. 3, e6914, 2020.|
|Description:||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.|
|Appears in Collections:||Artigo em periódico indexado (CNPGL)|