Degradação de palhada e liberação de nitrogênio por plantas de cobertura sob plantio direto

dc.contributor.authorNascente, Adriano Stephan
dc.contributor.authorCrusciol, Carlos Alexandre Costa [UNESP]
dc.contributor.authorStone, Luis Fernando
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:24:29Z
dc.date.available2018-12-11T17:24:29Z
dc.date.issued2014-01-01
dc.description.abstractCrops used to cover the ground may also release nitrogen into the soil during mineralization. However, it is necessary to identify species that combine fast nutrient release and longer permanence of the straw on the soil surface. The aim of this study was to investigate straw degradation and nitrogen release from cover crops under no-tillage cropping systems. The field trial was performed during two growing seasons in summer (2008/2009 and 2009/2010) in the Cerrado region of Brazil. The experimental design was a randomized block in factorial arrangement. Treatments were the combination of five plants (four cover crops species, 1 - Panicum maximum, 2- Brachiaria ruziziensis, 3. Brachiaria brizantha and 4. Pennisetum glaucum [millet], and fallow as a control) with six sampling times (first six weeks after application of glyphosate on the cover crops). Pennisetum glaucum and fallow showed faster straw degradation and nitrogen release. The cover crops Panicum maximum, Brachiaria brizantha and Brachiaria ruziziensis stood out in biomass production and in the amount of nitrogen in their shoots but had the lowest coefficients of degradation and persisted longer on the soil surface than Pennisetum glaucum and fallow.en
dc.description.affiliationEmbrapa Arroz e Feijão, Caixa Postal 179, 75375-000, Santo Antônio de Goias, Goias
dc.description.affiliationUniversidade Estadual Paulista (UNESP), Departamento de Agricultura, Caixa Postal 237, 18610-307 Botucatu, SP
dc.description.affiliationUnespUniversidade Estadual Paulista (UNESP), Departamento de Agricultura, Caixa Postal 237, 18610-307 Botucatu, SP
dc.format.extent166-175
dc.identifier.citationRevista Caatinga, v. 27, n. 2, p. 166-175, 2014.
dc.identifier.issn1983-2125
dc.identifier.issn0100-316X
dc.identifier.scopus2-s2.0-84903593945
dc.identifier.urihttp://hdl.handle.net/11449/177214
dc.language.isoeng
dc.language.isopor
dc.relation.ispartofRevista Caatinga
dc.relation.ispartofsjr0,388
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectMillet
dc.subjectMineralization
dc.subjectNitrogen cycling
dc.subjectPerennial forage
dc.titleDegradação de palhada e liberação de nitrogênio por plantas de cobertura sob plantio diretopt
dc.title.alternativeStraw degradation and nitrogen release from cover crops under no-tillageen
dc.typeArtigo
unesp.author.lattes9281484833327774[2]
unesp.author.orcid0000-0003-4673-1071[2]

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