Topdressed nitrogen fertilization on second-crop corn in soil with improved fertility

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorHickmann, Clério-
Autor(es): dc.creatorResende, Álvaro Vilela de-
Autor(es): dc.creatorLacerda, Julian Junio de Jesus-
Autor(es): dc.creatorMoreira, Silvino Guimarães-
Autor(es): dc.creatorAraújo, Breno Henrique-
Data de aceite: dc.date.accessioned2026-02-09T11:37:45Z-
Data de disponibilização: dc.date.available2026-02-09T11:37:45Z-
Data de envio: dc.date.issued2019-01-25-
Data de envio: dc.date.issued2019-01-25-
Data de envio: dc.date.issued2017-06-15-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/32537-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1143876-
Descrição: dc.descriptionThe aim of this study was to evaluate the performance of sources and application rates of topdressed nitrogen (N) on second-crop corn following soybean in an improved fertility Latossolo in the region of Campos das Vertentes, MG. Brazil. A randomized block experimental design was used in a 4 x 5 +1 factorial arrangement, with four replications. The treatments consisted of the combination of four N sources via forms of urea: conventional urea (common urea), urea coated with 16% elemental sulfur (Urea+S), urea treated with base compound urease inhibitor with a 0.4% boron and 0.15% copper (Ureia+B+Cu), urea treated with 1.060 mg kg-1 of the urease inhibitor N-(n-butyl) thiophosphoric triamide (Urea+NBPT), and five application rates of N through urea: 30, 45, 60, 90, and 120 kg ha-1, plus an additional treatment without N supplied in topdressing. The N concentrations in the leaves and grain, the exported N, the mineral N in the soil (nitrate and ammonium), grain yield, and profitability were evaluated. The N sources increased the N concentrations in the leaves, in the grain, and the exported N. However, the grain yield and the N concentration in the soil did not vary in accordance with the sources of urea. Increasing application rates of N increase N concentration in the leaves and in the grain, exported N, grain yield, and the mineral N concentration in the soil up to a depth of 10 cm. Application of N in topdressing is not economically beneficial considering the final yield of the second-crop corn following soybean in a soil with improved fertility.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Publicador: dc.publisherAcademic Journals-
Direitos: dc.rightsacesso aberto-
Direitos: dc.rightshttp://creativecommons.org/licenses/by/4.0/-
Direitos: dc.rightshttp://creativecommons.org/licenses/by/4.0/-
???dc.source???: dc.sourceAfrican Journal of Agricultural Research-
Palavras-chave: dc.subjectNo-tillage system-
Palavras-chave: dc.subjectSoil fertility-
Palavras-chave: dc.subjectTopdressed nitrogen-
Palavras-chave: dc.subjectPlantio direto-
Palavras-chave: dc.subjectFertilidade do solo-
Palavras-chave: dc.subjectAdubação nitrogenada-
Título: dc.titleTopdressed nitrogen fertilization on second-crop corn in soil with improved fertility-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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