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64. | | FARIAS, R. G.; SANTOS, D. S. dos; OLIVEIRA, J. de M.; NETO FILHO, H. F. S.; ROMANO, M. R. Diversidade florística e ocorrência de Broca-do-Rizoma em bananais com diferentes manejos das entrelinhas de plantio. In: REUNIÃO ANUAL DE CIÊNCIA, TECNOLOGIA, INOVAÇÃO E CULTURA NO RECÔNCAVO DA BAHIA - RECITEC RECÔNCAVO. 1., 2011, Cruz das Almas. Anais... Cruz das Almas: Universidade Federal do Recôncavo da Bahia, 2011. 1 CD-ROM. 2 p. Em paralelo aconteceram também os seguintes eventos: V Seminário de Pesquisa do Recôncavo da Bahia; V Seminário Estudantil de Pesquisa da UFRB; V Seminário da Pós-Graduação da UFRB; II Seminário Regional de Pesquisa da EBDA; 5ª Jornada... Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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69. | | SILVA, M. L. R. B. da; SOUZA, E. S. de; BARRETO, M. do C. S.; OLIVEIRA, J. de P. Enzimas hidrolíticas extracelulares em microrganismos. In: FIGUEIREDO, M. do V. B.; BURITY, H. A.; OLIVEIRA, J. de P.; SANTOS, C. E. de R. e S.; STAMFORD, N. P. (Ed.). Biotecnologia aplicada à agricultura: textos de apoio e protocolos experimentais. Brasília, DF: Embrapa Informação Tecnológica; Recife: Instituto Agronômico de Pernambuco, 2010. p. 125-152. Biblioteca(s): Embrapa Agricultura Digital. |
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70. | | MARTINS, M. M.; TEODORO, I. F.; CARVALHO, M. T. de M.; OLIVEIRA, J. de M.; MADARI, B. E. Impacto do uso de diferentes fontes de N sintético sobre a emissão de gás de efeito estufa e a produtividade do feijoeiro. In: SEMINÁRIO JOVENS TALENTOS, 11., 2017, Santo Antônio de Goiás. Coletânea dos resumos apresentados. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2017. p. 66. (Embrapa Arroz e Feijão. Documentos, 316). Biblioteca(s): Embrapa Arroz e Feijão. |
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75. | | BRITO, D. R.; BELTRÃO, N. E. de M.; BRUNO, G. B.; MOURA, M. F. de; OLIVEIRA, J. de L. Produtividade e qualidade da fibra de cultivares de algodão herbaceo ( Gossypium hirsutum L.r. latifolium Hutch) em função de diferentes arranjos de plantas. Agropecuária Técnica, Areia, PB, v.24, n.2, p.97-102, 2003. Biblioteca(s): Embrapa Algodão. |
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Registros recuperados : 133 | |
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Registro Completo
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
26/03/2018 |
Data da última atualização: |
11/11/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
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. |
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. |
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. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Annals of Forest Science, v. 75, Mar. 2018. |
DOI: |
https://doi.org/10.1007/s13595-018-0695-9 |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Concorrência; Fixação simbiótica de N2; Plantação de espécies mistas; Rotação de floresta; Temporadas. |
Thesagro: |
Fixação simbiótica de nitrogênio. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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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