Fertilização nitrogenada, densidade de plantas e rendimento de milho cultivado no sistema plantio direto

dc.contributor.authorde Brito Melo, Francisco
dc.contributor.authorCora, Jose Eduardo [UNESP]
dc.contributor.authorCardoso, Milton Jose
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:17:12Z
dc.date.available2014-05-20T13:17:12Z
dc.date.issued2011-01-01
dc.description.abstractIn maize (Zea mays L.), the inadequate nitrogen supply and planting density are considered limiting factors to the grain yield. The objective of this study was to evaluate the influence of different nitrogen levels and plant densities to the maize yield components and productivity. The experiment was carried out in the Cerrado region, located in the southern of the Maranhao State, Brazil, in a clay Oxisol (Ustox), cropped under the no-tillage system for six years. The randomized completed blocks experimental design with four replications was used, with treatments arrangement in a 5 x 4 factorial. The treatments were a combination of five doses of nitrogen as urea (0, 50, 100, 150 and 200 kg ha(-1)) and four plant densities (25,000; 50,000; 75,000 and 100,000 plants he). The grain number and mass per spike and grain mass per plant were improved by increased N and decreased plant density. Higher incomes of grains were obtained with adding concomitantly in N doses and in plants density. The maximum grain yield (11,9 Mg ha(-1)) was obtained with 120 kg ha(-1) of N and 83,000 plants ha(-1).en
dc.description.affiliationPesquisador Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Meio Norte, BR-64006220 Teresina, PI, Brazil
dc.description.affiliationUNESP, Dept Solos, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationUnespUNESP, Dept Solos, BR-14884900 Jaboticabal, SP, Brazil
dc.format.extent29-33
dc.identifierhttp://dx.doi.org/10.1590/S1806-66902011000100004
dc.identifier.citationRevista Ciência Agronomica. Fortaleza: Univ Federal Ceara, Dept Geol, v. 42, n. 1, p. 29-33, 2011.
dc.identifier.fileS1806-66902011000100004.pdf
dc.identifier.issn0045-6888
dc.identifier.scieloS1806-66902011000100004
dc.identifier.urihttp://hdl.handle.net/11449/3754
dc.identifier.wosWOS:000289828300004
dc.language.isopor
dc.publisherUniv Federal Ceara, Dept Geol
dc.relation.ispartofRevista Ciência Agronômica
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectCornen
dc.subjectPlant-Nitrogen effecten
dc.subjectNo-tillageen
dc.titleFertilização nitrogenada, densidade de plantas e rendimento de milho cultivado no sistema plantio diretopt
dc.title.alternativeNitrogen fertilization, plant density and maize yield cropped under no-tillage systemen
dc.typeArtigo
dcterms.rightsHolderUniv Federal Ceara, Dept Geol
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
unesp.departmentSolos e Adubos - FCAVpt

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