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Registro Completo |
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
24/02/2010 |
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Data da última atualização: |
04/04/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
DORES, E. F. G. C.; SPADOTTO, C. A.; WEBER, O. L. S.; CARBO, L.; VECCHIATO, A. B.; PINTO, A. A. |
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Afiliação: |
ELIANA F. G. C. DORES, Universidade Federal de Mato Grosso; Claúdio Aparecido Spadotto, Embrapa Monitoramento por Satélite; Oscarlina L. S. Weber, Universidade Federal de Mato Grosso; Leandro Carbo, UNESP; Antonio B. Vecchiato, Universidade Federal de Mato Grosso; Alicio A. Pinto, Universidade Federal de Mato Grosso. |
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Título: |
Environmental Behaviour of Metolachlor and Diuron in a Tropical Soil in the Central Region of Brazil. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Water, Air Soil Pollut, v. 197, p. 175-183, 2009. |
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DOI: |
10.1007/s1270-008-9801-1 |
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Idioma: |
Inglês |
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Conteúdo: |
The environmental behaviour of metolachlor and diuron was studied in the Central-western region of Brazil, by means of a field study where six experimental plots were installed. The soil was classified as a Latosol, and the soil horizons were characterized. Sorption of metolachlor and diuron was evaluated in laboratory batch experiments. Metolachlor and diuron were applied to the experimental plots on uncultivated soil in October 2003. From this date to March 2004, the following processes were studied: leaching, runoff and dissipation in top soil. Koc of metolachlor varied from 179 to 264 mL g?1 in the soil horizons. Koc of diuron in the Ap horizon was 917 mL g?1, decreasing significantly in the deeper horizons. Field dissipation half-lives of metolachlor and diuron were 18 and 15 days, respectively. In percolated water, metolachlor was detected in concentrations ranging from 0.02 to 2.84 ?g L?1. In runoff water and sediment, metolachlor was detected in decreasing concentrations throughout the period of study. Losses of 0.02% and 0.54% of the applied amount by leaching and runoff, respectively, were observed confirming the high mobility of this herbicide in the environment. In percolated water, diuron was detected with low frequency but in relatively high concentrations (up to 6.29 ?g L?1). In runoff water and soil, diuron was detected in decreasing concentrations until 70 days after application, totalizing 13.9% during the whole sampling period. These results show the importance of practices to reduce runoff avoiding surface water contamination by these pesticides, particularly diuron. MenosThe environmental behaviour of metolachlor and diuron was studied in the Central-western region of Brazil, by means of a field study where six experimental plots were installed. The soil was classified as a Latosol, and the soil horizons were characterized. Sorption of metolachlor and diuron was evaluated in laboratory batch experiments. Metolachlor and diuron were applied to the experimental plots on uncultivated soil in October 2003. From this date to March 2004, the following processes were studied: leaching, runoff and dissipation in top soil. Koc of metolachlor varied from 179 to 264 mL g?1 in the soil horizons. Koc of diuron in the Ap horizon was 917 mL g?1, decreasing significantly in the deeper horizons. Field dissipation half-lives of metolachlor and diuron were 18 and 15 days, respectively. In percolated water, metolachlor was detected in concentrations ranging from 0.02 to 2.84 ?g L?1. In runoff water and sediment, metolachlor was detected in decreasing concentrations throughout the period of study. Losses of 0.02% and 0.54% of the applied amount by leaching and runoff, respectively, were observed confirming the high mobility of this herbicide in the environment. In percolated water, diuron was detected with low frequency but in relatively high concentrations (up to 6.29 ?g L?1). In runoff water and soil, diuron was detected in decreasing concentrations until 70 days after application, totalizing 13.9% during the whole sampling period. These results show the impor... Mostrar Tudo |
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Palavras-Chave: |
Dissipation. |
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Thesaurus Nal: |
leaching; pesticides; runoff; sorption. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/35243/1/fulltext.pdf
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Marc: |
LEADER 02318naa a2200253 a 4500
001 1658650
005 2016-04-04
008 2009 bl uuuu u00u1 u #d
024 7 $a10.1007/s1270-008-9801-1$2DOI
100 1 $aDORES, E. F. G. C.
245 $aEnvironmental Behaviour of Metolachlor and Diuron in a Tropical Soil in the Central Region of Brazil.
260 $c2009
520 $aThe environmental behaviour of metolachlor and diuron was studied in the Central-western region of Brazil, by means of a field study where six experimental plots were installed. The soil was classified as a Latosol, and the soil horizons were characterized. Sorption of metolachlor and diuron was evaluated in laboratory batch experiments. Metolachlor and diuron were applied to the experimental plots on uncultivated soil in October 2003. From this date to March 2004, the following processes were studied: leaching, runoff and dissipation in top soil. Koc of metolachlor varied from 179 to 264 mL g?1 in the soil horizons. Koc of diuron in the Ap horizon was 917 mL g?1, decreasing significantly in the deeper horizons. Field dissipation half-lives of metolachlor and diuron were 18 and 15 days, respectively. In percolated water, metolachlor was detected in concentrations ranging from 0.02 to 2.84 ?g L?1. In runoff water and sediment, metolachlor was detected in decreasing concentrations throughout the period of study. Losses of 0.02% and 0.54% of the applied amount by leaching and runoff, respectively, were observed confirming the high mobility of this herbicide in the environment. In percolated water, diuron was detected with low frequency but in relatively high concentrations (up to 6.29 ?g L?1). In runoff water and soil, diuron was detected in decreasing concentrations until 70 days after application, totalizing 13.9% during the whole sampling period. These results show the importance of practices to reduce runoff avoiding surface water contamination by these pesticides, particularly diuron.
650 $aleaching
650 $apesticides
650 $arunoff
650 $asorption
653 $aDissipation
700 1 $aSPADOTTO, C. A.
700 1 $aWEBER, O. L. S.
700 1 $aCARBO, L.
700 1 $aVECCHIATO, A. B.
700 1 $aPINTO, A. A.
773 $tWater, Air Soil Pollut$gv. 197, p. 175-183, 2009.
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Registro original: |
Embrapa Territorial (CNPM) |
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| Registros recuperados : 8 | |
| 7. |  | HELM, C. V.; LIMA, E. A. de; BOZA, A. P. O.; PINTO, F. de S.; TERZI, S. da C.; COURI, S. Avaliação de basidiomicetos do gênero Ganoderma quanto ao potencial de síntese de enzimas lignocelulolíticas. In: CONGRESSO BRASILEIRO SOBRE FLORESTAS ENERGÉTICAS, 1., 2009, Belo Horizonte. Anais... Colombo: Embrapa Florestas, 2009. 1 CD-ROM. (Embrapa Florestas. Documentos, 178).| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 8. | | HELM, C. V.; LIMA, E. A. de; BOZA, A. P. O.; PINTO, F. de S.; TERZI, S. da C.; COURI, S. Avaliação de basidiomicetos do gênero Ganoderma quanto ao potencial de síntese de enzimas lignocelulolíticas. In: CONGRESSO BRASILEIRO SOBRE FLORESTAS ENERGÉTICAS, 1., 2009, Belo Horizonte. Anais. Colombo: Embrapa Florestas, 2009. 1 CD-ROM. (Embrapa Florestas. Documentos, 178). Seção: Derivados Energéticos de Alto Valor Agregado.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 8 | |
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