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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
22/12/2008 |
Data da última atualização: |
22/03/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MARTINEZ, C. O.; SILVA, C. M. M. de S.; FAY, E. F.; MAIA, A. de H. N.; ABAKERLI, R. B.; DURRANT, L. R. |
Afiliação: |
Camila Ortiz Martinez, Embrapa Meio Ambiente; Célia Maria Maganhotto de Souza Silva, Embrapa Meio Ambiente; ELISABETH FRANCISCONI FAY, CNPMA; ALINE DE HOLANDA NUNES MAIA, CNPMA; Rosângela Blotta Abakerli, Embrapa Meio Ambiente; Lucia R. Durrant, Faculdade de Engenharia de Alimentos-UNICAMP. |
Título: |
Degradation of the herbicide sulfentrazone in a Brazilian typic hapludox soil. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
Soil Biology and Biochemistry, v. 40, n. 4, p. 853-860, 2008. |
Idioma: |
Inglês |
Conteúdo: |
The herbicide sulfentrazone is classified as highly mobile and persistent and this study aimed to examine degradation of this compound on a Typic Hapludox soil that is representative of regions where sulfentrazone is used in Brazil. Soil samples were supplemented with sulfentrazone (0.7 mg active ingredient (a.i.) g1 soil), and maintained at 27 1C. Soil moisture was corrected to 30%, 70%, or 100% waterholding capacity (WHC) and maintained constant until the end of the experimental period. Soils without added herbicide were used as controls. Aliquots were taken after 14, 30, 60, 120, 180, and 255 days of incubation for quantitative analysis of sulfentrazone residues by gas chromatography. Another experiment was conducted in soil samples, with and without the herbicide, at different temperatures (15, 30, and 40 1C), with moisture kept constant at 70% of WHC. The sulfentrazone residues were quantified by gas chromatography after 14, 30, 60, and 120 days of incubation. Sulfentrazone degradation was not affected by soil moisture. A significant effect was observed for the temperature factor after 120 days on herbicide degradation, which was higher at 30 1C. A half-life of 146.5 days was recorded. It was observed that the herbicide stimulated growth of actinomycetes, whereas bacterial and fungal growth was not affected. The microorganisms selected as potential sulfentrazone degraders were Rhizobium radiobacter, Ralstonia pickettii, Methylobacterium radiotolerans, Cladosporium sp., Eupenicillium sp., and Paecilomyces sp. MenosThe herbicide sulfentrazone is classified as highly mobile and persistent and this study aimed to examine degradation of this compound on a Typic Hapludox soil that is representative of regions where sulfentrazone is used in Brazil. Soil samples were supplemented with sulfentrazone (0.7 mg active ingredient (a.i.) g1 soil), and maintained at 27 1C. Soil moisture was corrected to 30%, 70%, or 100% waterholding capacity (WHC) and maintained constant until the end of the experimental period. Soils without added herbicide were used as controls. Aliquots were taken after 14, 30, 60, 120, 180, and 255 days of incubation for quantitative analysis of sulfentrazone residues by gas chromatography. Another experiment was conducted in soil samples, with and without the herbicide, at different temperatures (15, 30, and 40 1C), with moisture kept constant at 70% of WHC. The sulfentrazone residues were quantified by gas chromatography after 14, 30, 60, and 120 days of incubation. Sulfentrazone degradation was not affected by soil moisture. A significant effect was observed for the temperature factor after 120 days on herbicide degradation, which was higher at 30 1C. A half-life of 146.5 days was recorded. It was observed that the herbicide stimulated growth of actinomycetes, whereas bacterial and fungal growth was not affected. The microorganisms selected as potential sulfentrazone degraders were Rhizobium radiobacter, Ralstonia pickettii, Methylobacterium radiotolerans, Cladosporium sp., ... Mostrar Tudo |
Palavras-Chave: |
Degradação. |
Thesagro: |
Herbicida. |
Categoria do assunto: |
W Química e Física |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/150415/1/2008AP-20.pdf
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Marc: |
LEADER 02143naa a2200205 a 4500 001 1015602 005 2023-03-22 008 2008 bl uuuu u00u1 u #d 100 1 $aMARTINEZ, C. O. 245 $aDegradation of the herbicide sulfentrazone in a Brazilian typic hapludox soil.$h[electronic resource] 260 $c2008 520 $aThe herbicide sulfentrazone is classified as highly mobile and persistent and this study aimed to examine degradation of this compound on a Typic Hapludox soil that is representative of regions where sulfentrazone is used in Brazil. Soil samples were supplemented with sulfentrazone (0.7 mg active ingredient (a.i.) g1 soil), and maintained at 27 1C. Soil moisture was corrected to 30%, 70%, or 100% waterholding capacity (WHC) and maintained constant until the end of the experimental period. Soils without added herbicide were used as controls. Aliquots were taken after 14, 30, 60, 120, 180, and 255 days of incubation for quantitative analysis of sulfentrazone residues by gas chromatography. Another experiment was conducted in soil samples, with and without the herbicide, at different temperatures (15, 30, and 40 1C), with moisture kept constant at 70% of WHC. The sulfentrazone residues were quantified by gas chromatography after 14, 30, 60, and 120 days of incubation. Sulfentrazone degradation was not affected by soil moisture. A significant effect was observed for the temperature factor after 120 days on herbicide degradation, which was higher at 30 1C. A half-life of 146.5 days was recorded. It was observed that the herbicide stimulated growth of actinomycetes, whereas bacterial and fungal growth was not affected. The microorganisms selected as potential sulfentrazone degraders were Rhizobium radiobacter, Ralstonia pickettii, Methylobacterium radiotolerans, Cladosporium sp., Eupenicillium sp., and Paecilomyces sp. 650 $aHerbicida 653 $aDegradação 700 1 $aSILVA, C. M. M. de S. 700 1 $aFAY, E. F. 700 1 $aMAIA, A. de H. N. 700 1 $aABAKERLI, R. B. 700 1 $aDURRANT, L. R. 773 $tSoil Biology and Biochemistry$gv. 40, n. 4, p. 853-860, 2008.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
11/10/1995 |
Data da última atualização: |
27/10/2005 |
Autoria: |
WANG, S. R.; WANG, G. M.; GARCIA, A. |
Afiliação: |
Do 3o. autor: EMBRAPA-CNPSo. Londrina, PR. |
Título: |
Estudo dos fatores que causam a retencao foliar em soja. |
Ano de publicação: |
1980 |
Fonte/Imprenta: |
In: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR). Resultados de pesquisa de soja 1979/80. Londrina, 1980. |
Páginas: |
p.295-298. |
Idioma: |
Português |
Palavras-Chave: |
Avaliacao; Brasil; Evaluation; Foliar retention; Method; Parana; Retencao foliar; Soybean. |
Thesagro: |
Fisiologia; Método; Pesquisa; Soja. |
Thesaurus NAL: |
Brazil; physiology; research. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00846naa a2200325 a 4500 001 1455383 005 2005-10-27 008 1980 bl uuuu u00u1 u #d 100 1 $aWANG, S. R. 245 $aEstudo dos fatores que causam a retencao foliar em soja. 260 $c1980 300 $ap.295-298. 650 $aBrazil 650 $aphysiology 650 $aresearch 650 $aFisiologia 650 $aMétodo 650 $aPesquisa 650 $aSoja 653 $aAvaliacao 653 $aBrasil 653 $aEvaluation 653 $aFoliar retention 653 $aMethod 653 $aParana 653 $aRetencao foliar 653 $aSoybean 700 1 $aWANG, G. M. 700 1 $aGARCIA, A. 773 $tIn: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR). Resultados de pesquisa de soja 1979/80. Londrina, 1980.
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Embrapa Soja (CNPSO) |
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