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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
24/11/1994 |
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Data da última atualização: |
30/11/2015 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
BONATO, E. R. |
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Título: |
Avaliação de genótipos de soja. IV. Ensaios de linhagens para semeadura do tarde. |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
In: SOJA: resultados de pesquisa 1991-1992. Passo Fundo: EMBRAPA-CNPT, 1992. |
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Páginas: |
p. 54-57 |
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Série: |
(EMBRAPA-CNPT. Documentos, 2). |
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Idioma: |
Português |
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Notas: |
Trabalho apresentado na XX Reunião de Pesquisa de Soja da Região Sul, Chapecó, 1992. |
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Thesagro: |
Soja. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/133270/1/ID10338-1991-1992sojaresultados-p54-57.pdf
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Marc: |
LEADER 00564naa a2200157 a 4500
001 1822109
005 2015-11-30
008 1992 bl uuuu u00u1 u #d
100 1 $aBONATO, E. R.
245 $aAvaliação de genótipos de soja. IV. Ensaios de linhagens para semeadura do tarde.
260 $c1992
300 $ap. 54-57
490 $a(EMBRAPA-CNPT. Documentos, 2).
500 $aTrabalho apresentado na XX Reunião de Pesquisa de Soja da Região Sul, Chapecó, 1992.
650 $aSoja
773 $tIn: SOJA: resultados de pesquisa 1991-1992. Passo Fundo: EMBRAPA-CNPT, 1992.
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Embrapa Trigo (CNPT) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
26/03/2018 |
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Data da última atualização: |
11/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
PAULA, R. R.; BOUILLET, J.-P.; GONÇALVES, J. L. de M.; TRIVELIN, P. C. O.; BALIEIRO, F. de C.; NOUVELLON, Y.; OLIVEIRA, J. de C.; DEUS JÚNIOR, J. C. de; LACLAU, J. P. |
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Afiliação: |
RANIERI R. PAULA, USP/ESALQ, UFES; JEAN-PIERRE BOUILLET, Eco&Sols, INRA, CIRAD, IRD, Montpellier SupAgro, University of Montpellier; JOSÉ L. DE M. GONÇALVES, USP/ESALQ; PAULO C. O. TRIVELIN, USP/CENA; FABIANO DE CARVALHO BALIEIRO, CNPS; YANN NOUVELLON, USP/ESALQ, Eco&Sols, INRA, CIRAD, IRD, Montpellier SupAgroUniversity of Montpellier; JULIANNE DE C. OLIVEIRA, USP/ESALQ; JOSÉ C. DE DEUS JÚNIOR, USP/ESALQ, UNESP; JEAN PAUL LACLAU, Eco&Sols, INRA, CIRAD, IRD, Montpellier SupAgroUniversity of Montpellier, UNESP. |
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Título: |
Nitrogen fixation rate of Acacia mangium Wild at mid rotation in Brazil is higher in mixed plantations with Eucalyptus grandis Hill ex Maiden than in monocultures. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Annals of Forest Science, v. 75, Mar. 2018. |
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DOI: |
https://doi.org/10.1007/s13595-018-0695-9 |
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Idioma: |
Inglês |
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Conteúdo: |
Key message Inter-specific interactions with eucalypts in mixed plantations increased N 2 fixation rate of acacia trees compared to monocultures. N 2 fixation was higher during the wet summer than during the dry winter both in acacia monocultures and in mixed plantations. Context Introducing N-fixing trees in fast-growing tropical plantations may contribute to reducing the long-term requirements of N fertilizers. Management practices established in forest monocultures should be revisited in mixed-species plantations. Aims This field experiment aimed to compare N2 fixation rates of Acacia mangium Wild in monospecific stands and in mixed-species stands with Eucalyptus grandis W. Hill ex Maiden. A secondary objective was to gain insight into the seasonal variations of N2 fixation. Methods 15N was applied to acacia and eucalypt monocultures and mixed-species with a 1:1 ratio at mid rotation. Leaves were collected in autumn, winter, spring, and summer to determine the foliar N concentrations and 15N atom fraction. The N content in the above-ground biomass was estimated as well as the percentage of N derived from atmospheric N2 (%Ndfa) using eucalypts in monoculture as reference plants. Results %Ndfa values averaged over the year were 14% in monoculture and 44% in mixed-species stands. While the stocking density of acacia trees was twice as high in monoculture as in mixture, the amounts of N fixed in above-ground biomass of acacia trees were close (35-39 kg N ha-1) at 39 months after planting. %Ndfa values were higher during the wet summer than the dry winter both in acacia monocultures and in mixed plantations. Conclusion The stocking density of acacia trees can be reduced in mixed plantations with eucalypts in comparison to acacia monocultures with a low influence on the input of N to soil through biological fixation. MenosKey message Inter-specific interactions with eucalypts in mixed plantations increased N 2 fixation rate of acacia trees compared to monocultures. N 2 fixation was higher during the wet summer than during the dry winter both in acacia monocultures and in mixed plantations. Context Introducing N-fixing trees in fast-growing tropical plantations may contribute to reducing the long-term requirements of N fertilizers. Management practices established in forest monocultures should be revisited in mixed-species plantations. Aims This field experiment aimed to compare N2 fixation rates of Acacia mangium Wild in monospecific stands and in mixed-species stands with Eucalyptus grandis W. Hill ex Maiden. A secondary objective was to gain insight into the seasonal variations of N2 fixation. Methods 15N was applied to acacia and eucalypt monocultures and mixed-species with a 1:1 ratio at mid rotation. Leaves were collected in autumn, winter, spring, and summer to determine the foliar N concentrations and 15N atom fraction. The N content in the above-ground biomass was estimated as well as the percentage of N derived from atmospheric N2 (%Ndfa) using eucalypts in monoculture as reference plants. Results %Ndfa values averaged over the year were 14% in monoculture and 44% in mixed-species stands. While the stocking density of acacia trees was twice as high in monoculture as in mixture, the amounts of N fixed in above-ground biomass of acacia trees were close (35-39 kg N ha-1) at 39 months af... Mostrar Tudo |
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Palavras-Chave: |
Concorrência; Fixação simbiótica de N2; Plantação de espécies mistas; Rotação de floresta; Temporadas. |
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Thesagro: |
Fixação simbiótica de nitrogênio. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02876naa a2200301 a 4500
001 2089744
005 2021-11-11
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s13595-018-0695-9$2DOI
100 1 $aPAULA, R. R.
245 $aNitrogen fixation rate of Acacia mangium Wild at mid rotation in Brazil is higher in mixed plantations with Eucalyptus grandis Hill ex Maiden than in monocultures.$h[electronic resource]
260 $c2018
520 $aKey message Inter-specific interactions with eucalypts in mixed plantations increased N 2 fixation rate of acacia trees compared to monocultures. N 2 fixation was higher during the wet summer than during the dry winter both in acacia monocultures and in mixed plantations. Context Introducing N-fixing trees in fast-growing tropical plantations may contribute to reducing the long-term requirements of N fertilizers. Management practices established in forest monocultures should be revisited in mixed-species plantations. Aims This field experiment aimed to compare N2 fixation rates of Acacia mangium Wild in monospecific stands and in mixed-species stands with Eucalyptus grandis W. Hill ex Maiden. A secondary objective was to gain insight into the seasonal variations of N2 fixation. Methods 15N was applied to acacia and eucalypt monocultures and mixed-species with a 1:1 ratio at mid rotation. Leaves were collected in autumn, winter, spring, and summer to determine the foliar N concentrations and 15N atom fraction. The N content in the above-ground biomass was estimated as well as the percentage of N derived from atmospheric N2 (%Ndfa) using eucalypts in monoculture as reference plants. Results %Ndfa values averaged over the year were 14% in monoculture and 44% in mixed-species stands. While the stocking density of acacia trees was twice as high in monoculture as in mixture, the amounts of N fixed in above-ground biomass of acacia trees were close (35-39 kg N ha-1) at 39 months after planting. %Ndfa values were higher during the wet summer than the dry winter both in acacia monocultures and in mixed plantations. Conclusion The stocking density of acacia trees can be reduced in mixed plantations with eucalypts in comparison to acacia monocultures with a low influence on the input of N to soil through biological fixation.
650 $aFixação simbiótica de nitrogênio
653 $aConcorrência
653 $aFixação simbiótica de N2
653 $aPlantação de espécies mistas
653 $aRotação de floresta
653 $aTemporadas
700 1 $aBOUILLET, J.-P.
700 1 $aGONÇALVES, J. L. de M.
700 1 $aTRIVELIN, P. C. O.
700 1 $aBALIEIRO, F. de C.
700 1 $aNOUVELLON, Y.
700 1 $aOLIVEIRA, J. de C.
700 1 $aDEUS JÚNIOR, J. C. de
700 1 $aLACLAU, J. P.
773 $tAnnals of Forest Science$gv. 75, Mar. 2018.
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