| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agrobiologia. |
|
Data corrente: |
16/09/1996 |
|
Data da última atualização: |
16/09/1996 |
|
Autoria: |
BODDEY, R. M.; OLIVEIRA, O. C. de; URQUIAGA, S.; REIS, V. M.; OLIVARES, F. L. de; BALDANI, V. L. D.; DOBEREINER, Johanna. |
|
Título: |
Biological nitrogen fixation associated with sugar cane and rice: Contributions and prospects for improvement. |
|
Ano de publicação: |
1995 |
|
Fonte/Imprenta: |
Plant and Soil, Netherlands, v. 174, p. 195-209, 1995. |
|
Idioma: |
Inglês |
|
Conteúdo: |
15N isotope and N balance studies performed over the last few years have shown that several Brazilian varieties of sugarcane are capable of obtaining over 60% of their nitrogen (>150 kg N ha-1 year-1) from biological nitrogen fixation (BNF). This may be due to the fact that this crop in Brazil has been systematically bred for high yields with low fertilizer N inputs. In the case of wetland rice, N balance experiments performed both in the field and in pots suggest that 30 to 60 N ha-1 crop-1 may be obtained from plant-associated BNF and that different varieties have different capacities to obtain N from this source. 15N2 incorporation studies have proved that wetland rice can obtain at least some N from BNF and acetylene reduction (AR) assays also indicate differences in N2-fixing ability between different rice varieties. However in situ AR field estimates suggest plant-associated BNF inputs to be less than 8 kg N ha-1 crop-1. The problems associated with the use of the 15N dilution technique for BNF quantification are discussed and illustrated with data from a recent study performed at EMBRAPA-CNPAB. Although many species of diazotrophs have been isolated from the rhizosphere of both sugarcane and wetland rice, the recent discovery of endophytic N2-fixing bacteria within roots, shoots and leaves of both crops suggests, at least in the case of sugarcane, that these bacteria may be the most important contributors to the observed BNF contributions. In sugarcane both Acetobacter diazotrophicus and ... Menos15N isotope and N balance studies performed over the last few years have shown that several Brazilian varieties of sugarcane are capable of obtaining over 60% of their nitrogen (>150 kg N ha-1 year-1) from biological nitrogen fixation (BNF). This may be due to the fact that this crop in Brazil has been systematically bred for high yields with low fertilizer N inputs. In the case of wetland rice, N balance experiments performed both in the field and in pots suggest that 30 to 60 N ha-1 crop-1 may be obtained from plant-associated BNF and that different varieties have different capacities to obtain N from this source. 15N2 incorporation studies have proved that wetland rice can obtain at least some N from BNF and acetylene reduction (AR) assays also indicate differences in N2-fixing ability between different rice varieties. However in situ AR field estimates suggest plant-associated BNF inputs to be less than 8 kg N ha-1 crop-1. The problems associated with the use of the 15N dilution technique for BNF quantification are discussed and illustrated with data from a recent study performed at EMBRAPA-CNPAB. Although many species of diazotrophs have been isolated from the rhizosphere of both sugarcane and wetland rice, the recent discovery of endophytic N2-fixing bacteria within roots, shoots and leaves of both crops suggests, at least in the case of sugarcane, that these bacteria may be the most important contributors to the observed BNF contributions. In sugarcane both Acetoba... Mostrar Tudo |
|
Palavras-Chave: |
Acetobacter diazotrophicus; BNF; FBN; Fixacao biologica de nitrogenio; Nitrogen fixing bacteria. |
|
Thesagro: |
Arroz; Cana de Açúcar. |
|
Thesaurus Nal: |
Herbaspirillum; rice; sugarcane. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02419naa a2200313 a 4500
001 1600502
005 1996-09-16
008 1995 bl --- 0-- u #d
100 1 $aBODDEY, R. M.
245 $aBiological nitrogen fixation associated with sugar cane and rice$bContributions and prospects for improvement.
260 $c1995
520 $a15N isotope and N balance studies performed over the last few years have shown that several Brazilian varieties of sugarcane are capable of obtaining over 60% of their nitrogen (>150 kg N ha-1 year-1) from biological nitrogen fixation (BNF). This may be due to the fact that this crop in Brazil has been systematically bred for high yields with low fertilizer N inputs. In the case of wetland rice, N balance experiments performed both in the field and in pots suggest that 30 to 60 N ha-1 crop-1 may be obtained from plant-associated BNF and that different varieties have different capacities to obtain N from this source. 15N2 incorporation studies have proved that wetland rice can obtain at least some N from BNF and acetylene reduction (AR) assays also indicate differences in N2-fixing ability between different rice varieties. However in situ AR field estimates suggest plant-associated BNF inputs to be less than 8 kg N ha-1 crop-1. The problems associated with the use of the 15N dilution technique for BNF quantification are discussed and illustrated with data from a recent study performed at EMBRAPA-CNPAB. Although many species of diazotrophs have been isolated from the rhizosphere of both sugarcane and wetland rice, the recent discovery of endophytic N2-fixing bacteria within roots, shoots and leaves of both crops suggests, at least in the case of sugarcane, that these bacteria may be the most important contributors to the observed BNF contributions. In sugarcane both Acetobacter diazotrophicus and ...
650 $aHerbaspirillum
650 $arice
650 $asugarcane
650 $aArroz
650 $aCana de Açúcar
653 $aAcetobacter diazotrophicus
653 $aBNF
653 $aFBN
653 $aFixacao biologica de nitrogenio
653 $aNitrogen fixing bacteria
700 1 $aOLIVEIRA, O. C. de
700 1 $aURQUIAGA, S.
700 1 $aREIS, V. M.
700 1 $aOLIVARES, F. L. de
700 1 $aBALDANI, V. L. D.
700 1 $aDOBEREINER, Johanna.
773 $tPlant and Soil, Netherlands$gv. 174, p. 195-209, 1995.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 49 | |
| 6. |  | MORAES, A. S.; GREGO, C. R.; FASIABEN, M. do C. R.; OLIVEIRA, O. C. de. Evolução da cultura da soja na agropecuária brasileira segundo os censos agropecuários 2006 e 2017. In: CONGRESSO DA SOCIEDADE BRASILEIRA DE ECONOMIA, ADMINISTRAÇÃO E SOCIOLOGIA RURAL, 61., 2023, Piracicaba. Agropecuária do futuro: tecnologia, sustentabilidade e a segurança alimentar: anais. Piracicaba: ESALQ/USP, 2023. 20 p. SOBER 2023. GT07.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agricultura Digital; Embrapa Soja. |
|    |
| 8. | | ALVES, B. J. R.; OLIVEIRA, O. C. de; BODDEY, R. M.; URQUIAGA, S. Métodos isotópicos. 2. ed. rev. atual. ampl. In: SANTOS, G. de A.; SILVA, L. S. da; CANELLAS, L. P.; CAMARGO, F. A. O. (Ed.). Fundamentos da matéria orgânica do solo: ecossistemas tropicais & subtropicais. Porto Alegre: Metrópole, 2008. p. 229-241. Parceria: FUNDAPAM.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Agrobiologia. |
| |
| 17. | | ZOTARELLI, L.; FERREIRA, E.; OLIVEIRA, O. C. de; BODDEY, Robert M.; URQUIAGA, Segundo; ALVES, Bruno J. R. Limitacao de nitrogenio na decomposicao da materia organica do solo de uma pastagem degradada de Panicum maximum. In: SIMPOSIO NACIONAL DE RECUPERACAO DE AREAS DEGRADADAS - SINRAD, 3., maio 1997, Ouro Preto. Anais... Vicosa: SOBRADE; UFV/DPS/DEF, 1997. p.118-124.| Biblioteca(s): Embrapa Agrobiologia. |
| |
| 18. | | RESENDE, A. S. de; XAVIER, R. P.; OLIVEIRA, O. C. de; URQUIAGA, S.; ALVES, B. J. R.; BODDEY, R. M. Long-term effects of pre-harvest burning and nitrogen and vinasse applications on yield of sugar cane and soil carbon and nitrogen stocks on a plantation in Pernambuco, N.E. Brazil. Plant and Soil, Dordrecht, v. 281, n. 1-2, p. 339-351, mar. 2006.| Biblioteca(s): Embrapa Agrobiologia. |
| |
| 19. | | ALMEIDA, M. M. T. B.; LIXA, A. T.; FASIABEN, M. do C. R.; OLIVEIRA, O. C. de. Distribuição do valor total da produção agropecuária municipal segundo dados do Censo Agropecuário 2017. In: CONGRESSO DA SOCIEDADE BRASILEIRA DE ECONOMIA, ADMINISTRAÇÃO E SOCIOLOGIA RURAL, 60., 2022, Natal. Agricultura familiar, sistemas agroalimentares e mudanças climáticas: desafios rumo aos ODS: anais. Natal: Universidade Federal do Rio Grande do Norte, 2022. p. 1-13. Sober 2022. GT07.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agricultura Digital. |
| |
| Registros recuperados : 49 | |
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
