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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
24/11/2004 |
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Data da última atualização: |
13/07/2012 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
HUNGRIA, M.; CAMPO, R. J.; MENDES, I. C.; FRANCHINI, J. C. |
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Afiliação: |
MARIANGELA HUNGRIA DA CUNHA, CNPSO; RUBENS JOSÉ CAMPO, CNPSo; IEDA DE CARVALHO MENDES, CPAC; JULIO CEZAR FRANCHINI DOS SANTOS, CNPSO. |
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Título: |
Reinoculation increasing soybean grain yield in Brazil. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONGRESS ON NITROGEN FIXATION, 14., Beijing. Program and abstract book... [S.l.: s.n., 2004]. |
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Páginas: |
p. 80. |
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Idioma: |
Inglês |
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Conteúdo: |
Soybean was introduced into Brazil at the end of the 19 thcentury, but significant commercial crop expansion only started in the 1960s, today the country is the second worldwide soybean argest grain producer. Biological nitrogen fixation (BNF) has always been a significant concern in this production systems, and programs for both strain selection and the identification of plant genotypes with superior symbiotic performance began in the late 1960s, and are still a major research focus. Nowadays most soils cropped with soybean have high Bradyrhizobium populations from previous inoculations, howerver, positive responses to reinoculation are reported > 10 ³ cells g-¹ of soil. A combined analysis of 30 field trials performed in the main producing areas indicated that reinoculation icreased yield by up to 28% and in average of 8%. Rates of BNF of up to 300 kg of N ha-¹ and provifin up to 94% of total plant N were observed in those experiments, allowing yilds of up to 5,900 kg ha-¹. Benefits due to the release of N to the following crop have also been observed, while starter- or post-flowering N fertilization has not resulted in increased yield, emphasizing the efficiency of the biological process. |
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Palavras-Chave: |
Reinoculação. |
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Thesagro: |
Fixação de nitrogênio; Soja. |
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Thesaurus Nal: |
Nitrogen fixation; Soybeans. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
LEADER 01872naa a2200229 a 4500
001 1467649
005 2012-07-13
008 2004 bl uuuu u00u1 u #d
100 1 $aHUNGRIA, M.
245 $aReinoculation increasing soybean grain yield in Brazil.
260 $c2004
300 $ap. 80.
520 $aSoybean was introduced into Brazil at the end of the 19 thcentury, but significant commercial crop expansion only started in the 1960s, today the country is the second worldwide soybean argest grain producer. Biological nitrogen fixation (BNF) has always been a significant concern in this production systems, and programs for both strain selection and the identification of plant genotypes with superior symbiotic performance began in the late 1960s, and are still a major research focus. Nowadays most soils cropped with soybean have high Bradyrhizobium populations from previous inoculations, howerver, positive responses to reinoculation are reported > 10 ³ cells g-¹ of soil. A combined analysis of 30 field trials performed in the main producing areas indicated that reinoculation icreased yield by up to 28% and in average of 8%. Rates of BNF of up to 300 kg of N ha-¹ and provifin up to 94% of total plant N were observed in those experiments, allowing yilds of up to 5,900 kg ha-¹. Benefits due to the release of N to the following crop have also been observed, while starter- or post-flowering N fertilization has not resulted in increased yield, emphasizing the efficiency of the biological process.
650 $aNitrogen fixation
650 $aSoybeans
650 $aFixação de nitrogênio
650 $aSoja
653 $aReinoculação
700 1 $aCAMPO, R. J.
700 1 $aMENDES, I. C.
700 1 $aFRANCHINI, J. C.
773 $tIn: INTERNATIONAL CONGRESS ON NITROGEN FIXATION, 14., Beijing. Program and abstract book... [S.l.: s.n., 2004].
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Registro original: |
Embrapa Soja (CNPSO) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Hortaliças. Para informações adicionais entre em contato com cnph.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
09/08/1999 |
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Data da última atualização: |
09/08/1999 |
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Autoria: |
MAROUELLI, W. A.; CARRIJO, O. A.; OLIVEIRA, C. A. S. |
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Afiliação: |
EMBRAPA-CNPH, Brasilia, DF. |
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Título: |
Epoca de paralisacao das irrigacoes na producao de sementes de cenoura. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.25, n.3, p.299-303, mar. 1990. |
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Idioma: |
Português |
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Palavras-Chave: |
Brasil; Brasilia; Carrot; Distrito Federal; Paralisacao; Production; Stop timing irrigation. |
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Thesagro: |
Cenoura; Cerrado; Daucus Carota; Irrigação; Produção; Semente. |
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Thesaurus NAL: |
Brazil; seeds. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00823naa a2200313 a 4500
001 1765108
005 1999-08-09
008 1990 bl uuuu u00u1 u #d
100 1 $aMAROUELLI, W. A.
245 $aEpoca de paralisacao das irrigacoes na producao de sementes de cenoura.
260 $c1990
650 $aBrazil
650 $aseeds
650 $aCenoura
650 $aCerrado
650 $aDaucus Carota
650 $aIrrigação
650 $aProdução
650 $aSemente
653 $aBrasil
653 $aBrasilia
653 $aCarrot
653 $aDistrito Federal
653 $aParalisacao
653 $aProduction
653 $aStop timing irrigation
700 1 $aCARRIJO, O. A.
700 1 $aOLIVEIRA, C. A. S.
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.25, n.3, p.299-303, mar. 1990.
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