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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
19/07/1998 |
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Data da última atualização: |
19/07/1998 |
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Autoria: |
GAUTHIER, D. L.; DIEM, H. G.; DOMMERGUES Y. R. |
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Título: |
Tropical and subtropical actinorhizal plants. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.19, s/n, p. 119-136, jun. 1984. |
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Idioma: |
Inglês |
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Conteúdo: |
Most tropical countries face two major problems: increasing overexploitation of wood reserves for timber or fuel wood and diminishing soil fertility for agricultural production. The present consensus is that N2-fixing plants can help prevent the forthcoming wood and food crisis. Together with the vast group of N2-fixing Leguminoseae, actinorhizal plants (AP) can play a major role in wood production and land regeneration. AP comprise eight families of dicotyledonous plants all of which are represented in the tropics. In this paper the most promising tropical AP are briefly presented and the emphasis is put mainly on Casuarinaceae. This family forms a group of four genera (Casuarina, Allocasuarina, Gymnostoma and genus C) with 82 species, including many trees that can yield wood of good quality. The Frankia strains that have been isolated from Casuarinaceae grow slowly and are able to reduce acetylene in vitro under air, which indicates that the protection against O2 is much more efficient in Frankia than in rhizobia. Only the species belonging to the Casuarina genus could be nodulated by strain ORS 021001, isolated from Casuarina junghuhniana, suggesting the existence of cross inoculation groups within the family Casuarinaceae. N2 fixation of Casuarina equisetifolia, grown in 1 m2 microplots at the ORSTOM experimental station of Dakar, was estimated by comparing total N in non-inoculated plants and plants inoculated with Frankia strain ORS 021001. Extrapolating to 1 hectare, N2 fixation was 131 kg for a 6.5-month period. Using the N Fertilizer equivalente method, inoculation appeared to be equivalent to the application of 288 kg of N fertilizer per hectare. MenosMost tropical countries face two major problems: increasing overexploitation of wood reserves for timber or fuel wood and diminishing soil fertility for agricultural production. The present consensus is that N2-fixing plants can help prevent the forthcoming wood and food crisis. Together with the vast group of N2-fixing Leguminoseae, actinorhizal plants (AP) can play a major role in wood production and land regeneration. AP comprise eight families of dicotyledonous plants all of which are represented in the tropics. In this paper the most promising tropical AP are briefly presented and the emphasis is put mainly on Casuarinaceae. This family forms a group of four genera (Casuarina, Allocasuarina, Gymnostoma and genus C) with 82 species, including many trees that can yield wood of good quality. The Frankia strains that have been isolated from Casuarinaceae grow slowly and are able to reduce acetylene in vitro under air, which indicates that the protection against O2 is much more efficient in Frankia than in rhizobia. Only the species belonging to the Casuarina genus could be nodulated by strain ORS 021001, isolated from Casuarina junghuhniana, suggesting the existence of cross inoculation groups within the family Casuarinaceae. N2 fixation of Casuarina equisetifolia, grown in 1 m2 microplots at the ORSTOM experimental station of Dakar, was estimated by comparing total N in non-inoculated plants and plants inoculated with Frankia strain ORS 021001. Extrapolating to 1 hectare, ... Mostrar Tudo |
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Palavras-Chave: |
Arvores fixadoras de N2; N2-fixing trees; Nodules; Nodulos. |
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Thesaurus Nal: |
Frankia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02237naa a2200205 a 4500
001 1104879
005 1998-07-19
008 1984 bl uuuu u00u1 u #d
100 1 $aGAUTHIER, D. L.
245 $aTropical and subtropical actinorhizal plants.
260 $c1984
520 $aMost tropical countries face two major problems: increasing overexploitation of wood reserves for timber or fuel wood and diminishing soil fertility for agricultural production. The present consensus is that N2-fixing plants can help prevent the forthcoming wood and food crisis. Together with the vast group of N2-fixing Leguminoseae, actinorhizal plants (AP) can play a major role in wood production and land regeneration. AP comprise eight families of dicotyledonous plants all of which are represented in the tropics. In this paper the most promising tropical AP are briefly presented and the emphasis is put mainly on Casuarinaceae. This family forms a group of four genera (Casuarina, Allocasuarina, Gymnostoma and genus C) with 82 species, including many trees that can yield wood of good quality. The Frankia strains that have been isolated from Casuarinaceae grow slowly and are able to reduce acetylene in vitro under air, which indicates that the protection against O2 is much more efficient in Frankia than in rhizobia. Only the species belonging to the Casuarina genus could be nodulated by strain ORS 021001, isolated from Casuarina junghuhniana, suggesting the existence of cross inoculation groups within the family Casuarinaceae. N2 fixation of Casuarina equisetifolia, grown in 1 m2 microplots at the ORSTOM experimental station of Dakar, was estimated by comparing total N in non-inoculated plants and plants inoculated with Frankia strain ORS 021001. Extrapolating to 1 hectare, N2 fixation was 131 kg for a 6.5-month period. Using the N Fertilizer equivalente method, inoculation appeared to be equivalent to the application of 288 kg of N fertilizer per hectare.
650 $aFrankia
653 $aArvores fixadoras de N2
653 $aN2-fixing trees
653 $aNodules
653 $aNodulos
700 1 $aDIEM, H. G.
700 1 $aDOMMERGUES Y. R.
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.19, s/n, p. 119-136, jun. 1984.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
11/11/2011 |
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Data da última atualização: |
23/09/2019 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
FARIAS, D. A. de; ALVES, F. S. F.; SANTIAGO, L. B.; LIMA, A. M. C.; CAVALCANTE, A. C. R.; PINHEIRO, R. R. |
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Afiliação: |
Daniele Alves de Farias, Bolsista, CNPq; FRANCISCO SELMO FERNANDES ALVES, CNPC; LAUANA BORGES SANTIAGO, CNPC; Ana Milena César Lima, Graduanda, Universidade Estadual Vale do Acaraú – UVA - Sobral, CE; ANTONIO CEZAR ROCHA CAVALCANTE, CNPC; RAYMUNDO RIZALDO PINHEIRO, CNPC. |
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Título: |
Perfil dos produtores de caprinos e ovinos de quatro mesorregiões do Estado do Ceará. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: SIMPÓSIO INTERNACIONAL SOBRE CAPRINOS E OVINOS DE CORTE, 5.; FEIRA NACIONAL DO AGRONEGÓCIO DA CAPRINO-OVINOCULTURA DE CORTE, 3., 2011, João Pessoa. [Anais...]. João Pessoa: [SEBRAE-PB]; EMEPA-PB, 2011. 3 f. 1 CD ROM. |
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Idioma: |
Português |
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Conteúdo: |
Objetivou-se caracterizar o perfil dos produtores de caprinos e ovinos de quatro mesorregiões do Estado do Ceará. O trabalho foi realizado nas mesorregiões dos Sertões Cearenses, Metropolitana de Fortaleza, Noroeste Cearense e Norte Cearense. Para coleta de dados, foi aplicado um questionário abordando questões sobre o perfil de 52 produtores. Nas mesorregiões Metropolitana e Noroeste Cearense prevaleceu a idade dos produtores entre os 36 a 50 anos. Nas demais mesorregiões, entre 51 e 65 anos e uma maior escolaridade (nível superior). Grande parte dos produtores adquiriu propriedade através de compra à vista entre os anos de 1996 a 2010 e apresentam experiência de 1 a 20 anos. O desenvolvimento da caprinovinocultura é observado pela inclusão de novos produtores na atividade. Profile of sheep and goat producers in four regions of Ceará State. Abstract: The objective was to characterize the profile of sheep and goat producers of four regions of Ceará State. The study was conducted in the Hinterlands of Ceará, Fortaleza Metropolitan Region and Northwest and North of Ceará. For data collection, it was used a questionnaire about the profile of 52 producers. In Northwest and Metropolitan Fortaleza Region, prevailed at the age of producers from 36 to 50 years old. In the other two regions, this value ranged from 51 to 65 years old, with a higher level of education of the producers (graduation level). Pproperties were acquired, mostly, by purchase in cash between the years of 1996 to 2010, by producers with an experience ranging from 10 to 20 years. The development of goats and sheep production is observed by the inclusion of new producers in the activity MenosObjetivou-se caracterizar o perfil dos produtores de caprinos e ovinos de quatro mesorregiões do Estado do Ceará. O trabalho foi realizado nas mesorregiões dos Sertões Cearenses, Metropolitana de Fortaleza, Noroeste Cearense e Norte Cearense. Para coleta de dados, foi aplicado um questionário abordando questões sobre o perfil de 52 produtores. Nas mesorregiões Metropolitana e Noroeste Cearense prevaleceu a idade dos produtores entre os 36 a 50 anos. Nas demais mesorregiões, entre 51 e 65 anos e uma maior escolaridade (nível superior). Grande parte dos produtores adquiriu propriedade através de compra à vista entre os anos de 1996 a 2010 e apresentam experiência de 1 a 20 anos. O desenvolvimento da caprinovinocultura é observado pela inclusão de novos produtores na atividade. Profile of sheep and goat producers in four regions of Ceará State. Abstract: The objective was to characterize the profile of sheep and goat producers of four regions of Ceará State. The study was conducted in the Hinterlands of Ceará, Fortaleza Metropolitan Region and Northwest and North of Ceará. For data collection, it was used a questionnaire about the profile of 52 producers. In Northwest and Metropolitan Fortaleza Region, prevailed at the age of producers from 36 to 50 years old. In the other two regions, this value ranged from 51 to 65 years old, with a higher level of education of the producers (graduation level). Pproperties were acquired, mostly, by purchase in cash between the years of 1996 t... Mostrar Tudo |
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Palavras-Chave: |
x. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/46336/1/AAC-Perfil-dos-produtores-de-caprinos-e-ovinos.pdf
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Marc: |
LEADER 02421nam a2200181 a 4500
001 1905781
005 2019-09-23
008 2011 bl uuuu u00u1 u #d
100 1 $aFARIAS, D. A. de
245 $aPerfil dos produtores de caprinos e ovinos de quatro mesorregiões do Estado do Ceará.$h[electronic resource]
260 $aIn: SIMPÓSIO INTERNACIONAL SOBRE CAPRINOS E OVINOS DE CORTE, 5.; FEIRA NACIONAL DO AGRONEGÓCIO DA CAPRINO-OVINOCULTURA DE CORTE, 3., 2011, João Pessoa. [Anais...]. João Pessoa: [SEBRAE-PB]; EMEPA-PB, 2011. 3 f. 1 CD ROM.$c2011
520 $aObjetivou-se caracterizar o perfil dos produtores de caprinos e ovinos de quatro mesorregiões do Estado do Ceará. O trabalho foi realizado nas mesorregiões dos Sertões Cearenses, Metropolitana de Fortaleza, Noroeste Cearense e Norte Cearense. Para coleta de dados, foi aplicado um questionário abordando questões sobre o perfil de 52 produtores. Nas mesorregiões Metropolitana e Noroeste Cearense prevaleceu a idade dos produtores entre os 36 a 50 anos. Nas demais mesorregiões, entre 51 e 65 anos e uma maior escolaridade (nível superior). Grande parte dos produtores adquiriu propriedade através de compra à vista entre os anos de 1996 a 2010 e apresentam experiência de 1 a 20 anos. O desenvolvimento da caprinovinocultura é observado pela inclusão de novos produtores na atividade. Profile of sheep and goat producers in four regions of Ceará State. Abstract: The objective was to characterize the profile of sheep and goat producers of four regions of Ceará State. The study was conducted in the Hinterlands of Ceará, Fortaleza Metropolitan Region and Northwest and North of Ceará. For data collection, it was used a questionnaire about the profile of 52 producers. In Northwest and Metropolitan Fortaleza Region, prevailed at the age of producers from 36 to 50 years old. In the other two regions, this value ranged from 51 to 65 years old, with a higher level of education of the producers (graduation level). Pproperties were acquired, mostly, by purchase in cash between the years of 1996 to 2010, by producers with an experience ranging from 10 to 20 years. The development of goats and sheep production is observed by the inclusion of new producers in the activity
653 $ax
700 1 $aALVES, F. S. F.
700 1 $aSANTIAGO, L. B.
700 1 $aLIMA, A. M. C.
700 1 $aCAVALCANTE, A. C. R.
700 1 $aPINHEIRO, R. R.
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Embrapa Caprinos e Ovinos (CNPC) |
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