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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
18/12/2009 |
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Data da última atualização: |
08/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
DENICH, M.; VLEK, P. L. G.; SA, T. D. de A.; VIELHAUER, K.; LÜCKE, W. |
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Afiliação: |
MANFRED DENICH, University of Bonn; PAUL L. G. VLEK, University of Bonn; TATIANA DEANE DE ABREU SA, CPATU; KONRAD VIELHAUER, University of Bonn; WOLFGANG LÜCKE, University of Göttingen. |
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Título: |
A concept for the development of fire-free fallow management in the Eastern Amazon, Brazil. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Agriculture, Ecosystems and Environment, v. 110, n. 1-2, p. 43-58, Oct. 2005. |
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DOI: |
doi:10.1016/j.agee.2005.05.005 |
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Idioma: |
Inglês |
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Conteúdo: |
Research-based improvements in small-farmer land-use systems are difficult to bring about. Often such improvements developed under research station conditions fail to address the true system problems or farmer concerns. In the search for ways to improve the traditional fallow system of the Eastern Amazon, field experiments were conducted in farmers? fields, but under researcher management with farmers helping to identify the critical needs for improvement. To achieve the objective a phased plan was followed: (1) exploratory research, (2) solution-oriented research with technology development and prototype evaluation, and (3) implementation-oriented research. The initial exploratory or diagnostic studies focused on (1) biomass accumulation, (2) nutrient dynamics and (3) fallowregeneration. Itwas found that (1) the live and dead above-ground biomass of 1-10-year-old fallow vegetation amounts to 10?98 Mg ha1, (2) in the nutrient balance of a crop/fallow cycle including slash burning and fertilization nutrient losses exceed inputs forN,K,Ca andMg, but not for P, and (3) vegetative resprouting of trees/shrubs exceeds in importance their regeneration by seeds and mechanized land preparation halves the accumulation of woody biomass of a 2-year-old fallow vegetation, compared to no tillage. Instead of designing an entirely new land-use system, modifications were studied only to those practices andcomponents recognized to be harmful to the sustainability of the traditional systemitself. Also, additional components to further improve the systemwere tested. Thus, various technologies were developed as a set of modules. These include: (1) mulch technology, (2) fire-free land clearing with a newly developed tractor-driven bush chopper to transform fallow vegetation into mulch, (3) enrichment planting with Acacia auriculiformis to accumulate twice as much biomass within 2 years as not managed fallows, (4) modification of the cropping period by doubling it, by shifting the planting date, and by re-arranging the crop sequence, and (5) the test ofmodern low-input crop varieties: rice and cassava cultivarswere identified for themulch-based systemwhich yield higher than locally widespread ones. Adoption of these modules is flexible, leaving the farmer in control of the innovation process. This last phase of implementation-oriented research, currently underway, is participatory and multidisciplinary in nature and seeks to develop and assess implementation strategies aimed at the diffusion of the farming system improvements. MenosResearch-based improvements in small-farmer land-use systems are difficult to bring about. Often such improvements developed under research station conditions fail to address the true system problems or farmer concerns. In the search for ways to improve the traditional fallow system of the Eastern Amazon, field experiments were conducted in farmers? fields, but under researcher management with farmers helping to identify the critical needs for improvement. To achieve the objective a phased plan was followed: (1) exploratory research, (2) solution-oriented research with technology development and prototype evaluation, and (3) implementation-oriented research. The initial exploratory or diagnostic studies focused on (1) biomass accumulation, (2) nutrient dynamics and (3) fallowregeneration. Itwas found that (1) the live and dead above-ground biomass of 1-10-year-old fallow vegetation amounts to 10?98 Mg ha1, (2) in the nutrient balance of a crop/fallow cycle including slash burning and fertilization nutrient losses exceed inputs forN,K,Ca andMg, but not for P, and (3) vegetative resprouting of trees/shrubs exceeds in importance their regeneration by seeds and mechanized land preparation halves the accumulation of woody biomass of a 2-year-old fallow vegetation, compared to no tillage. Instead of designing an entirely new land-use system, modifications were studied only to those practices andcomponents recognized to be harmful to the sustainability of the traditional systemitse... Mostrar Tudo |
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Palavras-Chave: |
Enrichment planting. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03169naa a2200193 a 4500
001 1578441
005 2022-06-08
008 2005 bl uuuu u00u1 u #d
024 7 $adoi:10.1016/j.agee.2005.05.005$2DOI
100 1 $aDENICH, M.
245 $aA concept for the development of fire-free fallow management in the Eastern Amazon, Brazil.$h[electronic resource]
260 $c2005
520 $aResearch-based improvements in small-farmer land-use systems are difficult to bring about. Often such improvements developed under research station conditions fail to address the true system problems or farmer concerns. In the search for ways to improve the traditional fallow system of the Eastern Amazon, field experiments were conducted in farmers? fields, but under researcher management with farmers helping to identify the critical needs for improvement. To achieve the objective a phased plan was followed: (1) exploratory research, (2) solution-oriented research with technology development and prototype evaluation, and (3) implementation-oriented research. The initial exploratory or diagnostic studies focused on (1) biomass accumulation, (2) nutrient dynamics and (3) fallowregeneration. Itwas found that (1) the live and dead above-ground biomass of 1-10-year-old fallow vegetation amounts to 10?98 Mg ha1, (2) in the nutrient balance of a crop/fallow cycle including slash burning and fertilization nutrient losses exceed inputs forN,K,Ca andMg, but not for P, and (3) vegetative resprouting of trees/shrubs exceeds in importance their regeneration by seeds and mechanized land preparation halves the accumulation of woody biomass of a 2-year-old fallow vegetation, compared to no tillage. Instead of designing an entirely new land-use system, modifications were studied only to those practices andcomponents recognized to be harmful to the sustainability of the traditional systemitself. Also, additional components to further improve the systemwere tested. Thus, various technologies were developed as a set of modules. These include: (1) mulch technology, (2) fire-free land clearing with a newly developed tractor-driven bush chopper to transform fallow vegetation into mulch, (3) enrichment planting with Acacia auriculiformis to accumulate twice as much biomass within 2 years as not managed fallows, (4) modification of the cropping period by doubling it, by shifting the planting date, and by re-arranging the crop sequence, and (5) the test ofmodern low-input crop varieties: rice and cassava cultivarswere identified for themulch-based systemwhich yield higher than locally widespread ones. Adoption of these modules is flexible, leaving the farmer in control of the innovation process. This last phase of implementation-oriented research, currently underway, is participatory and multidisciplinary in nature and seeks to develop and assess implementation strategies aimed at the diffusion of the farming system improvements.
653 $aEnrichment planting
700 1 $aVLEK, P. L. G.
700 1 $aSA, T. D. de A.
700 1 $aVIELHAUER, K.
700 1 $aLÜCKE, W.
773 $tAgriculture, Ecosystems and Environment$gv. 110, n. 1-2, p. 43-58, Oct. 2005.
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Embrapa Amazônia Oriental (CPATU) |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
26/02/2010 |
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Data da última atualização: |
29/04/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
SOUZA JUNIOR, L. de; LOURENÇO JUNIOR, J. de B.; SANTOS, N. de F. A. dos; GONÇALVES, G. F. D.; NAHUM, B. de S.; MONTEIRO, E. M. M.; ARAUJO, C. V.; FATURI, C. |
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Afiliação: |
LUCIVAL DE SOUZA JUNIOR, MESTRANDO UFPA/EMBRAPA/UFRA; JOSE DE BRITO LOURENÇO JUNIOR, UFRA; NUBIA DE FATIMA ALVES DOS SANTOS, DOUTORANDA UFRA/EMBRAPA; GEANE FERREIRA DIAS GONÇALVES, UFRPE; BENJAMIM DE SOUZA NAHUM, CPATU; EDWANA MARA MOREIRA MONTEIRO, DOUTORANDA UFRA/EMBRAPA; CLAUDIO VIEIRA ARAUJO, UFMT; CRISTIAN FATURI, UFRA. |
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Título: |
Avaliação do valor nutritivo da torta de coco (Cocos nucifera L.) para suplementação alimentar de ruminantes na Amazônia Oriental. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Amazônia: Ciência & Desenvolvimento, Belém, PA, v. 4, n. 8, p. 63-81, jan./jun. 2009. |
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Idioma: |
Português |
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Conteúdo: |
Foram avaliados os efeitos da inclusão de níveis de torta de coco ( Cocos nucifera L.), 0,4%, 0,8% e 1,2%PV, sobre os consumos e digestibilidades aparentes da matéria seca (DAMS), matéria orgânica (DAMO), proteína bruta (DAPB), extrato etéreo (DAEE), energia bruta (DAEB), fibra em detergente neutro (DAFDN) e fibra em detergente ácida (DAFDA). O volumoso foi quicuio-da-amazônia ( Brachiaria humidicola). Foi realizado ensaio metabólico, com 16 ovinos, em quatro tratamentos e quatro repetições, em delineamento inteiramente casualizado, em 21 dias (14 de adaptação e sete de coleta de dados), onde se monitorou o fornecimento da dieta e a coleta total de fezes. As DAMS, DAMO, DAEB e DAFDA tiveram efeitos lineares crescentes no intervalo de inclusão 0,4% até 1,2%PV. A DAPB apresentou efeito quadrático, com melhor nível de inclusão para PB, 0,66%PV e DAPB máxima 62,9%. A DAFDN se apresentou de modo quadrático, com melhor nível de inclusão de 0,89% PV e DAFDN máxima de 59,39%. O teor e EE na dieta afetou a DAMS segundo a equação y = 17,85 - 28,92x; R2 = 0,38, onde o aumento na inclusão afetou negativamente a digestão da DAMS. Concluise que a torta de coco é excelente fonte de proteína e energia para ruminantes, e pode contribuir no atendimento das demandas nutricionais para produção de carne e leite na Amazônia Oriental, com baixo custo. |
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Palavras-Chave: |
Ovinos. |
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Thesagro: |
Consumo; Digestibilidade. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/30484/1/AvaliacaoValorNutr.pdf
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Marc: |
LEADER 02159naa a2200241 a 4500
001 1658967
005 2013-04-29
008 2009 bl uuuu u00u1 u #d
100 1 $aSOUZA JUNIOR, L. de
245 $aAvaliação do valor nutritivo da torta de coco (Cocos nucifera L.) para suplementação alimentar de ruminantes na Amazônia Oriental.
260 $c2009
520 $aForam avaliados os efeitos da inclusão de níveis de torta de coco ( Cocos nucifera L.), 0,4%, 0,8% e 1,2%PV, sobre os consumos e digestibilidades aparentes da matéria seca (DAMS), matéria orgânica (DAMO), proteína bruta (DAPB), extrato etéreo (DAEE), energia bruta (DAEB), fibra em detergente neutro (DAFDN) e fibra em detergente ácida (DAFDA). O volumoso foi quicuio-da-amazônia ( Brachiaria humidicola). Foi realizado ensaio metabólico, com 16 ovinos, em quatro tratamentos e quatro repetições, em delineamento inteiramente casualizado, em 21 dias (14 de adaptação e sete de coleta de dados), onde se monitorou o fornecimento da dieta e a coleta total de fezes. As DAMS, DAMO, DAEB e DAFDA tiveram efeitos lineares crescentes no intervalo de inclusão 0,4% até 1,2%PV. A DAPB apresentou efeito quadrático, com melhor nível de inclusão para PB, 0,66%PV e DAPB máxima 62,9%. A DAFDN se apresentou de modo quadrático, com melhor nível de inclusão de 0,89% PV e DAFDN máxima de 59,39%. O teor e EE na dieta afetou a DAMS segundo a equação y = 17,85 - 28,92x; R2 = 0,38, onde o aumento na inclusão afetou negativamente a digestão da DAMS. Concluise que a torta de coco é excelente fonte de proteína e energia para ruminantes, e pode contribuir no atendimento das demandas nutricionais para produção de carne e leite na Amazônia Oriental, com baixo custo.
650 $aConsumo
650 $aDigestibilidade
653 $aOvinos
700 1 $aLOURENÇO JUNIOR, J. de B.
700 1 $aSANTOS, N. de F. A. dos
700 1 $aGONÇALVES, G. F. D.
700 1 $aNAHUM, B. de S.
700 1 $aMONTEIRO, E. M. M.
700 1 $aARAUJO, C. V.
700 1 $aFATURI, C.
773 $tAmazônia: Ciência & Desenvolvimento, Belém, PA$gv. 4, n. 8, p. 63-81, jan./jun. 2009.
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