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Campo DCValorIdioma
dc.creatorHickmann, Clério-
dc.creatorResende, Álvaro Vilela de-
dc.creatorLacerda, Julian Junio de Jesus-
dc.creatorMoreira, Silvino Guimarães-
dc.creatorAraújo, Breno Henrique-
dc.date.accessioned2019-01-25T11:20:39Z-
dc.date.available2019-01-25T11:20:39Z-
dc.date.issued2017-06-15-
dc.identifier.citationHICKMANN, C. et al. Topdressed nitrogen fertilization on second-crop corn in soil with improved fertility. African Journal of Agricultural Research, [S. l.], v. 12, n. 24, p. 2116-2124, 15 June 2017.pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/32537-
dc.description.abstractThe 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.pt_BR
dc.languageen_USpt_BR
dc.publisherAcademic Journalspt_BR
dc.rightsacesso abertopt_BR
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.sourceAfrican Journal of Agricultural Researchpt_BR
dc.subjectNo-tillage systempt_BR
dc.subjectSoil fertilitypt_BR
dc.subjectTopdressed nitrogenpt_BR
dc.subjectPlantio diretopt_BR
dc.subjectFertilidade do solopt_BR
dc.subjectAdubação nitrogenadapt_BR
dc.titleTopdressed nitrogen fertilization on second-crop corn in soil with improved fertilitypt_BR
dc.typeArtigopt_BR
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