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Biosurfactant-producing bacteria from an oil-contaminated mangrove. Repositório Alice
REYES, L. F.; DURRANT, L. R.; MELO, I. S. de.
Tipo: Separatas Palavras-chave: Biosurfactant; Producing; Oil-contaminated; Mangrove.; Bactéria..
Ano: 2008 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/16160
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Degradation of the herbicide sulfentrazone in a Brazilian typic hapludox soil. Repositório Alice
MARTINEZ, C. O.; SILVA, C. M. M. de S.; FAY, E. F.; MAIA, A. de H. N.; ABAKERLI, R. B.; DURRANT, L. R..
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...
Tipo: Separatas Palavras-chave: Degradação; Herbicida.
Ano: 2008 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/15602
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The effects of moisture and temperature on the degradation of sulfentrazone. Repositório Alice
MARTINEZ, C. O.; SILVA, C. M. M. de S.; FAY, E. F.; ABAKERLI, R. B.; MAIA, A. de H. N.; DURRANT, L. R..
This study examined the degradation of sulfentrazone in Arenic Hapludult soil, such soil being representative of regions where sulfentrazone is used in Brazil. Soil samples were supplemented with the herbicide [0.7 ?g active ingredient (a.i.) g-1 soil] and maintained at 27 °C. The soil moisture content was corrected to 30, 70 or 100% of water holding capacity (WHC). Herbicide-free soil samples were used as controls. Aliquots were taken after 14, 30, 60, 120, 180 and 255 days of incubation for the quantitative analysis of sulfentrazone residues by gas chromatography. Another experiment was conducted using soil samples with and without herbicide, submitted to different temperatures of 15, 30 and 40 °C, and kept at a constant value for WHC of 70% . The...
Tipo: Separatas Palavras-chave: Degradação; Herbicida.
Ano: 2008 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/15603
Registros recuperados: 3
Primeira ... 1 ... Última
 

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