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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
15/01/2008 |
Data da última atualização: |
01/04/2014 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Autoria: |
OLIVEIRA, F. R. de; VALARINI, P. J.; POPPI, R. J. |
Afiliação: |
Fernanda R. de Oliveira, UFSCar; Pedro José Valarini, Embrapa Meio Ambiente; Ronei Jesus Poppi, UFSCar. |
Título: |
Indicadores de qualidade do solo em área de mata e cultivado com cana orgânica e convencional . |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE AGROECOLOGIA, 5., 2007, Guarapari. Resumos... Revista Brasileira de Agroecologia, v.2, n.2, p.1299-1302, 2007. |
Idioma: |
Português |
Conteúdo: |
Em muitos casos, a substituição da vegetação nativa por sistemas agrícolas altera inúmeras características do solo. Este estudo propôs avaliar a qualidade do solo em áreas de uma propriedade que produz cana-de-açúcar sob manejo orgânico e convencional e correlacioná-las a uma área de mata nativa. Para isso, utilizou-se indicadores físicos, químicos e bioquímicos do solo, avaliados através de análise de componentes principais. Mesmo tendo observado diferenças nos atributos avaliados no solo de mata e sistemas agrícolas, estes se mostraram eficientes no uso e conservação do solo. |
Palavras-Chave: |
Indicadores. |
Thesagro: |
Qualidade; Solo. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/100235/1/2007AA-004.pdf
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Marc: |
LEADER 01192nam a2200169 a 4500 001 1015552 005 2014-04-01 008 2007 bl uuuu u00u1 u #d 100 1 $aOLIVEIRA, F. R. de 245 $aIndicadores de qualidade do solo em área de mata e cultivado com cana orgânica e convencional . 260 $aIn: CONGRESSO BRASILEIRO DE AGROECOLOGIA, 5., 2007, Guarapari. Resumos... Revista Brasileira de Agroecologia, v.2, n.2, p.1299-1302, 2007.$c2007 520 $aEm muitos casos, a substituição da vegetação nativa por sistemas agrícolas altera inúmeras características do solo. Este estudo propôs avaliar a qualidade do solo em áreas de uma propriedade que produz cana-de-açúcar sob manejo orgânico e convencional e correlacioná-las a uma área de mata nativa. Para isso, utilizou-se indicadores físicos, químicos e bioquímicos do solo, avaliados através de análise de componentes principais. Mesmo tendo observado diferenças nos atributos avaliados no solo de mata e sistemas agrícolas, estes se mostraram eficientes no uso e conservação do solo. 650 $aQualidade 650 $aSolo 653 $aIndicadores 700 1 $aVALARINI, P. J. 700 1 $aPOPPI, R. J.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
16/05/2013 |
Data da última atualização: |
20/05/2014 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 5 |
Autoria: |
MARKS, B. B.; MEGÍAS, M.; NOGUEIRA, M. A.; HUNGRIA, M. |
Afiliação: |
BETTINA BERQUÓ MARKS, UEL; MANUEL MEGÍAS, Universidad de Sevilla; MARCO ANTONIO NOGUEIRA, CNPSO; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
Título: |
Biotechnological potential of rhizobial metabolites to enhance the performance of Bradyrhizobium spp. and Azospirillum brasiliense inoculants with soybean and maize. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
AMB Express, Heidelberg, v. 3, n. 21, p. 1-10, Apr. 2013. |
DOI: |
10.1186/2191-0855-3-21 |
Idioma: |
Inglês |
Conteúdo: |
Agricultural sustainability may represent the greatest encumbrance to increasing food production. On the other hand, as a component of sustainability, replacement of chemical fertilizers by bio-fertilizers has the potential to lower costs for farmers, to increase yields, and to mitigate greenhouse-gas emissions and pollution of water and soil. Rhizobia and plant-growth-promoting rhizobacteria (PGPR) have been broadly used in agriculture, and advances in our understanding of plant-bacteria interactions have been achieved; however, the use of signaling molecules to enhance crop performance is still modest. In this study, we evaluated the effects of concentrated metabolites (CM) from two strains of rhizobia-Bradyrhizobium diazoefficiens USDA 110T (BD1) and Rhizobium tropici CIAT 899T (RT1)?at two concentrations of active compounds (10-8 and 10-9 M)_on the performances of two major plant-microbe interactions, of Bradyrhizobium spp.-soybean (Glycine max (L.) Merr.) and Azospirillum brasilense-maize (Zea mays L.). For soybean, one greenhouse and two field experiments were performed and effects of addition of CM from the homologous and heterologous strains, and of the flavonoid genistein were investigated. For maize, three field experiments were performed to examine the effects of CM from RT1. For soybean, compared to the treatment inoculated exclusively with Bradyrhizobium, benefits were achieved with the addition of CM-BD1; at 10?9 M, grain yield was increased by an average of 4.8%. For maize, the best result was obtained with the addition of CM-RT1, also at 10?9 M, increasing grain yield by an average of 11.4%. These benefits might be related to a combination of effects attributed to secondary compounds produced by the rhizobial strains, including exopolysaccharides (EPSs), plant hormones and lipo-chitooligosaccharides (LCOs). The results emphasize the biotechnological potential of using secondary metabolites of rhizobia together with inoculants containing both rhizobia and PGPR to improve the growth and yield of grain crops. MenosAgricultural sustainability may represent the greatest encumbrance to increasing food production. On the other hand, as a component of sustainability, replacement of chemical fertilizers by bio-fertilizers has the potential to lower costs for farmers, to increase yields, and to mitigate greenhouse-gas emissions and pollution of water and soil. Rhizobia and plant-growth-promoting rhizobacteria (PGPR) have been broadly used in agriculture, and advances in our understanding of plant-bacteria interactions have been achieved; however, the use of signaling molecules to enhance crop performance is still modest. In this study, we evaluated the effects of concentrated metabolites (CM) from two strains of rhizobia-Bradyrhizobium diazoefficiens USDA 110T (BD1) and Rhizobium tropici CIAT 899T (RT1)?at two concentrations of active compounds (10-8 and 10-9 M)_on the performances of two major plant-microbe interactions, of Bradyrhizobium spp.-soybean (Glycine max (L.) Merr.) and Azospirillum brasilense-maize (Zea mays L.). For soybean, one greenhouse and two field experiments were performed and effects of addition of CM from the homologous and heterologous strains, and of the flavonoid genistein were investigated. For maize, three field experiments were performed to examine the effects of CM from RT1. For soybean, compared to the treatment inoculated exclusively with Bradyrhizobium, benefits were achieved with the addition of CM-BD1; at 10?9 M, grain yield was increased by an average of 4.... Mostrar Tudo |
Thesagro: |
Soja. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/84662/1/biotechnological.pdf
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Marc: |
LEADER 02678naa a2200181 a 4500 001 1958119 005 2014-05-20 008 2013 bl uuuu u00u1 u #d 024 7 $a10.1186/2191-0855-3-21$2DOI 100 1 $aMARKS, B. B. 245 $aBiotechnological potential of rhizobial metabolites to enhance the performance of Bradyrhizobium spp. and Azospirillum brasiliense inoculants with soybean and maize.$h[electronic resource] 260 $c2013 520 $aAgricultural sustainability may represent the greatest encumbrance to increasing food production. On the other hand, as a component of sustainability, replacement of chemical fertilizers by bio-fertilizers has the potential to lower costs for farmers, to increase yields, and to mitigate greenhouse-gas emissions and pollution of water and soil. Rhizobia and plant-growth-promoting rhizobacteria (PGPR) have been broadly used in agriculture, and advances in our understanding of plant-bacteria interactions have been achieved; however, the use of signaling molecules to enhance crop performance is still modest. In this study, we evaluated the effects of concentrated metabolites (CM) from two strains of rhizobia-Bradyrhizobium diazoefficiens USDA 110T (BD1) and Rhizobium tropici CIAT 899T (RT1)?at two concentrations of active compounds (10-8 and 10-9 M)_on the performances of two major plant-microbe interactions, of Bradyrhizobium spp.-soybean (Glycine max (L.) Merr.) and Azospirillum brasilense-maize (Zea mays L.). For soybean, one greenhouse and two field experiments were performed and effects of addition of CM from the homologous and heterologous strains, and of the flavonoid genistein were investigated. For maize, three field experiments were performed to examine the effects of CM from RT1. For soybean, compared to the treatment inoculated exclusively with Bradyrhizobium, benefits were achieved with the addition of CM-BD1; at 10?9 M, grain yield was increased by an average of 4.8%. For maize, the best result was obtained with the addition of CM-RT1, also at 10?9 M, increasing grain yield by an average of 11.4%. These benefits might be related to a combination of effects attributed to secondary compounds produced by the rhizobial strains, including exopolysaccharides (EPSs), plant hormones and lipo-chitooligosaccharides (LCOs). The results emphasize the biotechnological potential of using secondary metabolites of rhizobia together with inoculants containing both rhizobia and PGPR to improve the growth and yield of grain crops. 650 $aSoja 700 1 $aMEGÍAS, M. 700 1 $aNOGUEIRA, M. A. 700 1 $aHUNGRIA, M. 773 $tAMB Express, Heidelberg$gv. 3, n. 21, p. 1-10, Apr. 2013.
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