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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
16/08/2004 |
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Data da última atualização: |
19/09/2007 |
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Autoria: |
OLIVEIRA, F. L. de; RIBAS, R. G. T.; JUNQUEIRA, R. M.; PADOVAN, M. P.; GUERRA, J. G. M.; ALMEIDA, D. L. de; RIBEIRO, R. de L. D. |
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Título: |
Uso do pré-cultivo de Crotalaria juncea e de doses crescentes de "cama" de aviário na produção do repolho sob manejo orgânico. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Agronomia, Seropédica/RJ, v. 37, n. 2, p. 60-66, 2003. |
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Idioma: |
Português |
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Notas: |
Effects of the cover crop Crotalaria juncea and increasing rates of poultry manure on yield of organic cabbage. |
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Conteúdo: |
Foi conduzido um ensaio de campo no Sistema Integrado de Pesquisa em Produção Agroecológica(SIPA), Seropédica-RH, para avaliar os efeitos da adubação verde, na forma de pré-cultivo com Crotalaria juncea, e da aplicação suplementar esterco de "cama" de aviário, em cobertura, no rendimento do repolho cultivado em sistema orgânico. O delineamento experimental adotado foi de "blocos ao acaso", com quatro repetições, obedecendo o esquema fatorial 2 x 4. As mudas de repolho (cv. Astrus) foram transplantadas para covas diretamente abertas em meio à fitomassa roçada de C. juncea ou da vegetação espontânea (pousio). Doses crescentes de "cama" de aviário (0=controle, 12, 24 e 36 t/ha) foram parceladas em três aplicações, correspondentes a 20, 50 e 80 dias após o transplantio, em torno de cada planta. A fitomassa roçada da leguminosa, mantida sobre o solo, acarretou benefícios quanto à produtividade do repolho. Igualmente, o uso de "cama" de aviário favoreceu significativamente o desenvolvimento das plantas de repolho, sendo as respostas proporcionais às doses empregadas. Os efeitos da adubação verde (C. juncea) e da "cama" de aviário foram independentes, uma vez que a análise estatística não demonstrou interações entre os tratamentos.
A field experiment was conducted at the "Integrated Agroecological Production Research System", Seropédica-RJ, to evaluate the effects of Crotalaria juncea, used as a previous cover crop, and increasing levels of poultry manure, used as a suplementary fertilizer, on yield of cabbage under organic management. The field plot was established in randomized blocks, with four replications, fitting a 2 x 4 factorial design. Cabbage seedlings were transplanted directly over C. juncea or weeds above-ground biomass immediatly following their cutting at soil level. Composted poultry manure (0=control, 12, 24 and 36 t/ha) was applied around each cabbage plant on three occasions during crop cycle (20, 50, and 80 days after transplanting). The legume crop residues maintained on the soil as a mulch was beneficial to cabbage yield. Poultry manure also significantly increased yield, the responses being proportional to the applied dosages. Effects of green manure (C. juncea) and poultry manure were independent since no interaction were shown by statistical analysis. MenosFoi conduzido um ensaio de campo no Sistema Integrado de Pesquisa em Produção Agroecológica(SIPA), Seropédica-RH, para avaliar os efeitos da adubação verde, na forma de pré-cultivo com Crotalaria juncea, e da aplicação suplementar esterco de "cama" de aviário, em cobertura, no rendimento do repolho cultivado em sistema orgânico. O delineamento experimental adotado foi de "blocos ao acaso", com quatro repetições, obedecendo o esquema fatorial 2 x 4. As mudas de repolho (cv. Astrus) foram transplantadas para covas diretamente abertas em meio à fitomassa roçada de C. juncea ou da vegetação espontânea (pousio). Doses crescentes de "cama" de aviário (0=controle, 12, 24 e 36 t/ha) foram parceladas em três aplicações, correspondentes a 20, 50 e 80 dias após o transplantio, em torno de cada planta. A fitomassa roçada da leguminosa, mantida sobre o solo, acarretou benefícios quanto à produtividade do repolho. Igualmente, o uso de "cama" de aviário favoreceu significativamente o desenvolvimento das plantas de repolho, sendo as respostas proporcionais às doses empregadas. Os efeitos da adubação verde (C. juncea) e da "cama" de aviário foram independentes, uma vez que a análise estatística não demonstrou interações entre os tratamentos.
A field experiment was conducted at the "Integrated Agroecological Production Research System", Seropédica-RJ, to evaluate the effects of Crotalaria juncea, used as a previous cover crop, and increasing levels of poultry manure, used as a suplementary f... Mostrar Tudo |
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Palavras-Chave: |
Cabbages; Direct sowing; Fazendinha agroecológica; Production; SIPA; Zero tillage. |
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Thesagro: |
Adubação Verde; Adubo Orgânico; Crotalária Juncea; Plantio Direto; Produção; Repolho. |
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Thesaurus Nal: |
green manures; organic fertilizers. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03512naa a2200373 a 4500
001 1612055
005 2007-09-19
008 2003 bl --- 0-- u #d
100 1 $aOLIVEIRA, F. L. de
245 $aUso do pré-cultivo de Crotalaria juncea e de doses crescentes de "cama" de aviário na produção do repolho sob manejo orgânico.
260 $c2003
500 $aEffects of the cover crop Crotalaria juncea and increasing rates of poultry manure on yield of organic cabbage.
520 $aFoi conduzido um ensaio de campo no Sistema Integrado de Pesquisa em Produção Agroecológica(SIPA), Seropédica-RH, para avaliar os efeitos da adubação verde, na forma de pré-cultivo com Crotalaria juncea, e da aplicação suplementar esterco de "cama" de aviário, em cobertura, no rendimento do repolho cultivado em sistema orgânico. O delineamento experimental adotado foi de "blocos ao acaso", com quatro repetições, obedecendo o esquema fatorial 2 x 4. As mudas de repolho (cv. Astrus) foram transplantadas para covas diretamente abertas em meio à fitomassa roçada de C. juncea ou da vegetação espontânea (pousio). Doses crescentes de "cama" de aviário (0=controle, 12, 24 e 36 t/ha) foram parceladas em três aplicações, correspondentes a 20, 50 e 80 dias após o transplantio, em torno de cada planta. A fitomassa roçada da leguminosa, mantida sobre o solo, acarretou benefícios quanto à produtividade do repolho. Igualmente, o uso de "cama" de aviário favoreceu significativamente o desenvolvimento das plantas de repolho, sendo as respostas proporcionais às doses empregadas. Os efeitos da adubação verde (C. juncea) e da "cama" de aviário foram independentes, uma vez que a análise estatística não demonstrou interações entre os tratamentos. A field experiment was conducted at the "Integrated Agroecological Production Research System", Seropédica-RJ, to evaluate the effects of Crotalaria juncea, used as a previous cover crop, and increasing levels of poultry manure, used as a suplementary fertilizer, on yield of cabbage under organic management. The field plot was established in randomized blocks, with four replications, fitting a 2 x 4 factorial design. Cabbage seedlings were transplanted directly over C. juncea or weeds above-ground biomass immediatly following their cutting at soil level. Composted poultry manure (0=control, 12, 24 and 36 t/ha) was applied around each cabbage plant on three occasions during crop cycle (20, 50, and 80 days after transplanting). The legume crop residues maintained on the soil as a mulch was beneficial to cabbage yield. Poultry manure also significantly increased yield, the responses being proportional to the applied dosages. Effects of green manure (C. juncea) and poultry manure were independent since no interaction were shown by statistical analysis.
650 $agreen manures
650 $aorganic fertilizers
650 $aAdubação Verde
650 $aAdubo Orgânico
650 $aCrotalária Juncea
650 $aPlantio Direto
650 $aProdução
650 $aRepolho
653 $aCabbages
653 $aDirect sowing
653 $aFazendinha agroecológica
653 $aProduction
653 $aSIPA
653 $aZero tillage
700 1 $aRIBAS, R. G. T.
700 1 $aJUNQUEIRA, R. M.
700 1 $aPADOVAN, M. P.
700 1 $aGUERRA, J. G. M.
700 1 $aALMEIDA, D. L. de
700 1 $aRIBEIRO, R. de L. D.
773 $tAgronomia, Seropédica/RJ$gv. 37, n. 2, p. 60-66, 2003.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Semiárido. |
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Data corrente: |
26/03/2013 |
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Data da última atualização: |
16/07/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
FERNANDES JUNIOR, P. I.; PEREIRA, G. M. D.; PERIN, L.; SILVA, L. M. da; BARAÚNA, A. C.; ALVES, F. M.; PASSOS, S. R.; ZILLI, J. E. |
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Afiliação: |
PAULO IVAN FERNANDES JUNIOR, CPATSA; GILMARA MARIA DUARTE PEREIRA; LIAMARA PERIN; LUANA MESQUITA DA SILVA; ALEXANDRE CARDOSO BARAÚNA; FRANCILENE MUNIZ ALVES; SAMUEL RIBEIRO PASSOS; JERRI EDSON ZILLI, CNPAB. |
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Título: |
Diazotrophic bacteria isolated from wild rice Oryza glumaepatula (Poaceae) in the Brazilian Amazon. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Revista de Biologia Tropical, San José, v. 61, n. 2, p. 991-999, jun. 2013. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
The association of wild grasses with diazotrophic bacteria in Brazilian biomes is poorly understood. The isolation and characterization of bacteria associated with wild grasses can contribute to understand the diazotrophic ecology as well as to identify bacteria with biotechnological applications. In this study, we isolated and characterized diazotrophic bacterial isolates from Oryza glumaepatula collected in Cerrado and Forest areas of the Amazon in Roraima State, Brazil. Healthy O. glumepatula plants were collected at five sampling sites at Forest and seven at Cerrado, respectively. The plants were collected at the Cerrado areas in September 2008 while the Forest plants were collected in June/2008 and April/2009. The plants and the soil adhering to the roots were transferred to pots and grown for 35 days in greenhouse conditions. During the harvest, the shoots and the roots were crushed separately in a saline solution; the suspension was diluted serially and inoculated in Petri dishes containing Dyg?s medium. All distinct bacterial colonies were purified in the same medium. The diazotrophic capacity of each bacterium in microaerophilic conditions was assessed in semisolid BMGM medium. In addition, the pellicles forming bacterial isolates were also evaluated by PCR amplification for nifH gene. The diversity of nifH+ bacteria was analyzed by Box-PCR fingerprinting. For selected strains, the growth promoting capacity of O. sativa as a model plant was also evaluated. A total of 992 bacterial isolates were obtained. Fiftyone bacteria were able to form pellicles in the semisolid medium and 38 also positively amplified the 360bp nifH gene fragment. Among the 38 nifH+ isolates, 24 were obtained from the shoots, while 14 originated from the roots. The Box-PCR profiles showed that the bacterial isolates obtained in this study presented a low similarity with the reference strains belonging to the Herbaspirillum, Azospirillum and Burkholderia genus. The growthpromoting ability was confirmed for at least five isolates. For these bacteria, the root and shoot growing results showed higher increases when compared to those observed in plants inoculated with the evaluated reference strains. These results indicate that O. glumaepatula is colonized by a high diverse diazotrophic community in the Brazilian Amazon. Further investigations are now being carried out to determine the taxonomic positions of these isolates and their growth promoting mechanisms. MenosThe association of wild grasses with diazotrophic bacteria in Brazilian biomes is poorly understood. The isolation and characterization of bacteria associated with wild grasses can contribute to understand the diazotrophic ecology as well as to identify bacteria with biotechnological applications. In this study, we isolated and characterized diazotrophic bacterial isolates from Oryza glumaepatula collected in Cerrado and Forest areas of the Amazon in Roraima State, Brazil. Healthy O. glumepatula plants were collected at five sampling sites at Forest and seven at Cerrado, respectively. The plants were collected at the Cerrado areas in September 2008 while the Forest plants were collected in June/2008 and April/2009. The plants and the soil adhering to the roots were transferred to pots and grown for 35 days in greenhouse conditions. During the harvest, the shoots and the roots were crushed separately in a saline solution; the suspension was diluted serially and inoculated in Petri dishes containing Dyg?s medium. All distinct bacterial colonies were purified in the same medium. The diazotrophic capacity of each bacterium in microaerophilic conditions was assessed in semisolid BMGM medium. In addition, the pellicles forming bacterial isolates were also evaluated by PCR amplification for nifH gene. The diversity of nifH+ bacteria was analyzed by Box-PCR fingerprinting. For selected strains, the growth promoting capacity of O. sativa as a model plant was also evaluated. A total o... Mostrar Tudo |
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Palavras-Chave: |
Bactérias; Ecologia microbiana; Fixação biológica de nitrogênio; Plantas. |
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Thesagro: |
Arroz; Doença. |
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Thesaurus NAL: |
rice. |
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Categoria do assunto: |
--
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/79745/1/Fernandes-Junior-et-al.-2013-RBT.pdf
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Marc: |
LEADER 03306naa a2200289 a 4500
001 1954182
005 2013-07-16
008 2013 bl uuuu u00u1 u #d
100 1 $aFERNANDES JUNIOR, P. I.
245 $aDiazotrophic bacteria isolated from wild rice Oryza glumaepatula (Poaceae) in the Brazilian Amazon.
260 $c2013
520 $aThe association of wild grasses with diazotrophic bacteria in Brazilian biomes is poorly understood. The isolation and characterization of bacteria associated with wild grasses can contribute to understand the diazotrophic ecology as well as to identify bacteria with biotechnological applications. In this study, we isolated and characterized diazotrophic bacterial isolates from Oryza glumaepatula collected in Cerrado and Forest areas of the Amazon in Roraima State, Brazil. Healthy O. glumepatula plants were collected at five sampling sites at Forest and seven at Cerrado, respectively. The plants were collected at the Cerrado areas in September 2008 while the Forest plants were collected in June/2008 and April/2009. The plants and the soil adhering to the roots were transferred to pots and grown for 35 days in greenhouse conditions. During the harvest, the shoots and the roots were crushed separately in a saline solution; the suspension was diluted serially and inoculated in Petri dishes containing Dyg?s medium. All distinct bacterial colonies were purified in the same medium. The diazotrophic capacity of each bacterium in microaerophilic conditions was assessed in semisolid BMGM medium. In addition, the pellicles forming bacterial isolates were also evaluated by PCR amplification for nifH gene. The diversity of nifH+ bacteria was analyzed by Box-PCR fingerprinting. For selected strains, the growth promoting capacity of O. sativa as a model plant was also evaluated. A total of 992 bacterial isolates were obtained. Fiftyone bacteria were able to form pellicles in the semisolid medium and 38 also positively amplified the 360bp nifH gene fragment. Among the 38 nifH+ isolates, 24 were obtained from the shoots, while 14 originated from the roots. The Box-PCR profiles showed that the bacterial isolates obtained in this study presented a low similarity with the reference strains belonging to the Herbaspirillum, Azospirillum and Burkholderia genus. The growthpromoting ability was confirmed for at least five isolates. For these bacteria, the root and shoot growing results showed higher increases when compared to those observed in plants inoculated with the evaluated reference strains. These results indicate that O. glumaepatula is colonized by a high diverse diazotrophic community in the Brazilian Amazon. Further investigations are now being carried out to determine the taxonomic positions of these isolates and their growth promoting mechanisms.
650 $arice
650 $aArroz
650 $aDoença
653 $aBactérias
653 $aEcologia microbiana
653 $aFixação biológica de nitrogênio
653 $aPlantas
700 1 $aPEREIRA, G. M. D.
700 1 $aPERIN, L.
700 1 $aSILVA, L. M. da
700 1 $aBARAÚNA, A. C.
700 1 $aALVES, F. M.
700 1 $aPASSOS, S. R.
700 1 $aZILLI, J. E.
773 $tRevista de Biologia Tropical, San José$gv. 61, n. 2, p. 991-999, jun. 2013.
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