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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
04/10/2006 |
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Data da última atualização: |
12/04/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ARAÚJO, A. S. F.; MONTEIRO, R. T. R.; ABAKERLI, R. B. |
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Afiliação: |
A. S. F. ARAÚJO, aCentro de Energia Nuclear na Agricultura; R. T. R. MONTEIRO, Embrapa Meio Ambiente; R. B. ABAKERLI, Embrapa Meio Ambiente. |
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Título: |
Effect of glyphosate on the microbial activity of two Brazilian soils. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Chemosphere, Oxford, v. 52, p. 799-804, 2003. |
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Idioma: |
Inglês |
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Conteúdo: |
Glyphosate [N-(phosphonomethyl)-glycine] is a broad-spectrum, non-selective, post-emergence herbicide that is widely used in agricultural. We studied, in vitro, changes in the microbial activity of typical Hapludult and Hapludox Brazilian soils, with and without applied glyphosate. Glyphosate was applied at a rate of 2.16 mg glyphosate kg[-1] of soil and microbial activity was measured by soil respiration (evolution of CO[2]) and fluorescein diacetate (FDA) hydrolysis over a period of 32 days. We found an increase of 10-15% in the CO[2] evolved and a 9-19% increase in FDA hydrolyses in the presence of glyphosate compared with the same type of soil which had never received glyphosate. Soil which had been exposed to glyphosate for several years had the strongest response in microbial activity. Most probable number (MPN) counts showed that after 32 days incubation the number of actinomycetes and fungi had increased while the number of bacteria showed a slight reduction. After the incubation period, high pressure liquid chromatography (HPLC) detected the glyphosate metabolite aminomethyl phosphonic acid (AMPA), indicating glyphosate degradation by soil microorganisms. |
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Thesagro: |
Biodegradação; Herbicida. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/163844/1/Araujo-Effect-6438.pdf
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Marc: |
LEADER 01673naa a2200169 a 4500
001 1015088
005 2018-04-12
008 2003 bl uuuu u00u1 u #d
100 1 $aARAÚJO, A. S. F.
245 $aEffect of glyphosate on the microbial activity of two Brazilian soils.$h[electronic resource]
260 $c2003
520 $aGlyphosate [N-(phosphonomethyl)-glycine] is a broad-spectrum, non-selective, post-emergence herbicide that is widely used in agricultural. We studied, in vitro, changes in the microbial activity of typical Hapludult and Hapludox Brazilian soils, with and without applied glyphosate. Glyphosate was applied at a rate of 2.16 mg glyphosate kg[-1] of soil and microbial activity was measured by soil respiration (evolution of CO[2]) and fluorescein diacetate (FDA) hydrolysis over a period of 32 days. We found an increase of 10-15% in the CO[2] evolved and a 9-19% increase in FDA hydrolyses in the presence of glyphosate compared with the same type of soil which had never received glyphosate. Soil which had been exposed to glyphosate for several years had the strongest response in microbial activity. Most probable number (MPN) counts showed that after 32 days incubation the number of actinomycetes and fungi had increased while the number of bacteria showed a slight reduction. After the incubation period, high pressure liquid chromatography (HPLC) detected the glyphosate metabolite aminomethyl phosphonic acid (AMPA), indicating glyphosate degradation by soil microorganisms.
650 $aBiodegradação
650 $aHerbicida
700 1 $aMONTEIRO, R. T. R.
700 1 $aABAKERLI, R. B.
773 $tChemosphere, Oxford$gv. 52, p. 799-804, 2003.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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| 17. |  | RIBEIRO, A. M. B.; LEITE, L. F. C.; ARAÚJO, A. S. F. de; CASTRO, A. A. J. F. Indicadores químicos e biológicos de qualidade do solo com ênfase nos cerrados piauienses. In: LOPES, W. G. R.; LOPES, Â. C. de A.; GOMES, J. M. A.; MOITA NETO, J. M.; LEITE, L. F. C.; TEIXEIRA, P. W. G. do N.; BARROS, R. F. M. de (Ed.). Cerrado piauiense: uma visão multidisciplinar. Teresina: EDUFPI, 2007. v. 2 p. 319-345 (Série Desenvolvimento e Meio Ambiente, 2).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 19. | | MATIAS, M. da C. B. da S.; SALVIANO, A. A. C.; LEITE, L. F. C.; ARAÚJO, A. S. F. de. Biomassa microbiana e estoques de C e N do solo em diferentes sistemas de manejo, no cerrado do Estado do Piauí. Acta Scientiarum. Agronomy, Maringá, v. 1, n. 3, p. 517-521, 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Meio-Norte. |
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| Registros recuperados : 63 | |
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