Nitrogen recovery from fertilizers and cover crops by maize crop under no-tillage system

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Autor(es): dc.contributorInstituto Federal Goiano-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorIAEA-
Autor(es): dc.creatorda Silva, Edson Cabral-
Autor(es): dc.creatorMuraoka, Takashi-
Autor(es): dc.creatorBastos, Alefe Viana Souza-
Autor(es): dc.creatorFranzini, Vinícius Ide-
Autor(es): dc.creatorda Silva, Alinne-
Autor(es): dc.creatorBuzetti, Salatiér-
Autor(es): dc.creatorSakadevan, Karuppan-
Autor(es): dc.creatorSoares, Frederico Antonio Loureiro-
Autor(es): dc.creatorTeixeira, Marconi Batista-
Autor(es): dc.creatorTrivelin, Paulo César Ocheuze-
Autor(es): dc.creatorde Araújo, Leandro Coelho-
Data de aceite: dc.date.accessioned2025-08-21T22:34:54Z-
Data de disponibilização: dc.date.available2025-08-21T22:34:54Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2019-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.21475/AJCS.20.14.05.P2127-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/301241-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/301241-
Descrição: dc.descriptionCrop rotation associated with the use of cover crops promotes the introduction of crop residues to the soil, with direct and indirect effects on the availability of plant nutrients, especially nitrogen (N). The objectives of this study were to estimate the N utilization from 15N-urea and cover crop residues (labelled with 15N) of maize crops grown in succession, and evaluate the effects of the isolated and combined use of cover crops and urea on maize plant height, yield components, and grain yield, grown under a no-tillage system. Field research was conducted in an Oxisol (Rhodic Haplustox), Cerrado (Savannah) phase. The experimental design was a randomized block with 20 treatments and four replications in a 5x4 factorial scheme. The treatments were four cover crops species: sunn hemp (Crotalaria juncea L.), pigeon pea (Cajanus cajan (L.) Millsp), green velvet bean (Mucuna prurens), and millet (Pennisetum glaucum L.) + spontaneous vegetation (fallow in the off-season), combined with four N rates: 0, 30, 90, and 150 kg ha-1, applied at the sowing and topdressing stages. The results showed that legume cover crops provided maize grain yields equivalent to the application of 80–108 kg ha-1 N as urea. The urea N utilization by the maize was at an average of 43.5 % of the applied amount. The results indicate that cover crops, particularly legume cover crops, are an important source of N to non-legume cereals. Legumes used as cover crops can replace nitrogen fertilizers of more than 80 kg ha, which is both environmentally and economically viable for corn production.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionInternational Atomic Energy Agency-
Descrição: dc.descriptionInstituto Federal Goiano, GO-
Descrição: dc.descriptionUniversidade de São Paulo Centro de Energia Nuclear na Agricultura Piracicaba, SP-
Descrição: dc.descriptionEmbrapa Cocais, MA-
Descrição: dc.descriptionUniversidade Estadual Paulista “Júlio de Mesquita Filho” (FEIS/UNESP), Ilha Solteira, SP-
Descrição: dc.descriptionSoil and Water management & Crop Nutrition Subprogram Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture International Atomic Energy Agency IAEA-
Descrição: dc.descriptionUniversidade Estadual Paulista “Júlio de Mesquita Filho” (FEIS/UNESP), Ilha Solteira, SP-
Descrição: dc.descriptionFAPESP: 2008/54502-9-
Descrição: dc.descriptionInternational Atomic Energy Agency: RLA 5052-
Formato: dc.format766-774-
Idioma: dc.languageen-
Relação: dc.relationAustralian Journal of Crop Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectgreen manure-
Palavras-chave: dc.subjectisotope dilution-
Palavras-chave: dc.subjectOxisol-
Palavras-chave: dc.subjectSavannah-
Palavras-chave: dc.subjecturea-
Palavras-chave: dc.subjectZea mays-
Título: dc.titleNitrogen recovery from fertilizers and cover crops by maize crop under no-tillage system-
Tipo de arquivo: dc.typelivro digital-
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