Fate of N-15 fertilizer applied to maize in rotation with tropical forage grasses

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorRocha, Kassiano F.-
Autor(es): dc.creatorMariano, Eduardo-
Autor(es): dc.creatorGrassmann, Camila S.-
Autor(es): dc.creatorTrivelin, Paulo C. O.-
Autor(es): dc.creatorRosolem, Ciro A.-
Data de aceite: dc.date.accessioned2021-03-11T01:12:09Z-
Data de disponibilização: dc.date.available2021-03-11T01:12:09Z-
Data de envio: dc.date.issued2019-10-04-
Data de envio: dc.date.issued2019-10-04-
Data de envio: dc.date.issued2019-05-15-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.fcr.2019.04.018-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/184520-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/184520-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionFAPEG-Goias Research Foundation-
Descrição: dc.descriptionFAPEMA-Maranhao Research Foundation-
Descrição: dc.descriptionBiotechnology and Biological Sciences Research Council-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionProcesso FAPESP: 2015/50305-8-
Descrição: dc.descriptionFAPEG-Goias Research Foundation: 2015-10267001479-
Descrição: dc.descriptionFAPEMA-Maranhao Research Foundation: RCUK-02771/16-
Descrição: dc.descriptionBiotechnology and Biological Sciences Research Council: BB/N013201/1-
Descrição: dc.descriptionProcesso FAPESP: 2016/25253-7-
Descrição: dc.descriptionProcesso FAPESP: 2017/02517-1-
Descrição: dc.descriptionTropical forage grasses of the genus Megathyrsus and Urochloa can suppress soil-nitrification by releasing inhibitory substances, reducing N losses and increasing fertilizer N recovery of the cash crop in rotation. In contrast, ruzigrass (Urochloa ruziziensis) has been reported to decrease the yield and N accumulation of the subsequent crop and hence can affect N use efficiency and the fate of applied N. We investigated the effects of Guinea grass (M. maximum), palisade grass (U. brizantha), and ruzigrass on succeeding crop yield, N accumulation, and the fate of N-15-labeled fertilizer applied to maize (Zea mays L.) in a 2-year field experiment in Brazil. Maize was fertilized with 140 kg ha(-1) N as ((NH4)-N-15)(2)SO4 or not fertilized, and recovery of residual N-15 was quantified in the second season. Net nitrification rates through an incubation study had no differences among grasses. Nitrogen application increased maize yield and N accumulation in both seasons, whereas maize yield decreased by 9.5% following ruzigrass compared with the other forages. The grasses had no effect on N-15 recovery by maize or in the system. On average, the recovery of N-15 in maize and soil was 34% and 46% in the first growing season and 2.9% and 20% in the second season, respectively. Our results indicated that tropical perennial grasses had no differential effects on nitrification rates and the fate of N-15-labeled fertilizer in the plant-litter-soil system in the season of application nor in the subsequent crop (residual effect).-
Formato: dc.format35-44-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationField Crops Research-
Direitos: dc.rightsopenAccess-
Palavras-chave: dc.subjectZea mays L.-
Palavras-chave: dc.subjectBrachiaria-
Palavras-chave: dc.subjectN-1(5)-
Palavras-chave: dc.subjectNitrogen uptake efficiency-
Palavras-chave: dc.subjectSoil N loss-
Título: dc.titleFate of N-15 fertilizer applied to maize in rotation with tropical forage grasses-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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