Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Registro completo
Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Utilization of nitrogen (15N) from urea and green manures by rice as affected by nitrogen fertilizer rate.
Autores:  CONTRERAS ESPINAL, F. S.
SILVA, E. C. da
MURAOKA, T.
FRANZINI, V. I.
TRIVELIN, P. C. O.
TEIXEIRA, M. B.
SAKADEVAN, K.
Data:  2016-05-31
Ano:  2016
Palavras-chave:  Oryza sativa L
Arroz
Nitrogênio
Isotopic diluition
Nitrogen mineralization
Resumo:  The use of green manures (GMs) in combination with nitrogen (N) fertilizer application is a promising practice to improve N fertilizer management in agricultural production systems. The main objective of this study was to evaluate the N use efficiency (NUE) of rice plant, derived from GMs including sunn hemp (Crotalaria juncea L.), millet (Pennisetum glaucum L.) and urea in the greenhouse. The experimental treatments included two GMs (sunn hemp-15N and millet-15N), absence of N organic source (without GM residues in soil) and four N rates, as urea-15N (0, 28.6, 57.2 and 85.8 mg N kg-1). The results showed that both rice grain and straw biomass yields under sunn hemp were greater than that of millet or without the application of GM. The NUE of rice under sunn hemp was greater than that under millet (18.9 and 7.8% under sunn hemp and millet, respectively). The urea N application rates did not affect the fertilizer NUE by rice (53.7%) with or without GMs. The NUE of GMs by rice plants ranged from 14.1% and 16.8% for root and shoot, respectively. The study showed that green manures can play an important role in enhancing soil fertility and N supply to subsequent crops.

2016
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  52188

http://www.alice.cnptia.embrapa.br/handle/doc/1045905

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/143551/1/830BE3B57851.pdf

10.5897/AJAR2015.10684
Editor:  African Journal of Agricultural Research, v. 11, n. 13, p. 1171-1180, Mar. 2016.
Relação:  Embrapa Amazônia Oriental - Artigo em periódico indexado (ALICE)
Fechar
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional