Nitrogen management, nitrogen use efficiency, and seed yield and quality of creeping signalgrass

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorCatuchi, Tiago A.-
Autor(es): dc.creatorSoratto, Rogério P.-
Autor(es): dc.creatorFrancisquini Júnior, Amarildo-
Autor(es): dc.creatorAranda, Elton A.-
Autor(es): dc.creatorGuidorizzi, Fernando V. C.-
Autor(es): dc.creatorTiritan, Carlos S.-
Data de aceite: dc.date.accessioned2021-03-11T00:46:02Z-
Data de disponibilização: dc.date.available2021-03-11T00:46:02Z-
Data de envio: dc.date.issued2018-12-11-
Data de envio: dc.date.issued2018-12-11-
Data de envio: dc.date.issued2017-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.2135/cropsci2017.02.0096-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/175184-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/175184-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionProcesso FAPESP: 2012/09398-4-
Descrição: dc.descriptionNitrogen (N) fertilization management can affect the seed yield and quality of tropical forage grasses. Studies have shown the effect of N rates on tropical grass seed production, but no study has evaluated the effect of application timing of N on the N use efficiency (NUE) and seed yield and quality of creeping signalgrass [Urochloa humidicola (Rendle) Morrone & Zuloaga, syn. Brachiaria humidicola (Rendle) Schweick.]. Field experiments were conducted over two growing seasons in Santo Anastácio, São Paulo, Brazil, to evaluate the influence of N fertilization timing on plant nutrition, herbage mass, N uptake, NUE, and seed yield and quality of creeping signalgrass ‘Llanero’. The treatments included a control (no N application) and four treatments with N applied at different times (150 kg N ha−1 during the vegetative phase, 150 kg N ha−1 at panicle initiation [prebooting], 100 kg N ha−1 during the vegetative phase plus 50 kg N ha−1 at panicle initiation, and 50 kg N ha−1 during the vegetative phase plus 100 kg N ha−1 at panicle initiation). Topdressed N fertilization increased the concentration of N in the flag leaf by 35.9% (from 12.2 to 16.6 g kg−1) and increased the herbage N uptake by 99.7% (from 72 and 144 kg ha−1). Herbage mass was not affected by topdressed N fertilization. The greatest seed yield (64.2% or 136 kg ha−1 greater than the control, and an average of 22.5% or 64 kg ha−1 greater than the other N treatments) was observed in response to 100 kg N ha−1 applied during the vegetative phase plus 50 kg N ha−1 applied at panicle initiation, which resulted in improved NUE. Seed viability was greater in the treatments where all or most of the N was applied at panicle initiation. In addition, the seed germination percentage was positively affected by N fertilization, regardless of the N application timing.-
Formato: dc.format2865-2874-
Idioma: dc.languageen-
Relação: dc.relationCrop Science-
Relação: dc.relation0,789-
Direitos: dc.rightsopenAccess-
Título: dc.titleNitrogen management, nitrogen use efficiency, and seed yield and quality of creeping signalgrass-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.