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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
22/12/2008 |
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Data da última atualização: |
23/11/2016 |
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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, UFMT; CLAUDIO APARECIDO SPADOTTO, SGTE; Oscarlina L. S.Weber, UFMT; Leandro Carbo, UNESP-Campus de Araraquara; Antonio B. Vecchiato, UFMT; Alicio A. Pinto, UFMT. |
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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: |
2008 |
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Fonte/Imprenta: |
Water, Air and Soil Pollution, v. 197, p. 175?183, 2009. |
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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. K oc of metolachlor varied from 179 to 264 mL g-1 in the soil horizons. K oc 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. K oc of metolachlor varied from 179 to 264 mL g-1 in the soil horizons. K oc 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 imp... Mostrar Tudo |
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Thesagro: |
Agrotóxico; Água; Poluição Ambiental. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/150407/1/2008CP-12.pdf
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Marc: |
LEADER 02263naa a2200217 a 4500
001 1015592
005 2016-11-23
008 2008 bl uuuu u00u1 u #d
100 1 $aDORES, E. F. G. C.
245 $aEnvironmental behaviour of metolachlor and diuron in a tropical soil in the Central Region of Brazil.$h[electronic resource]
260 $c2008
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. K oc of metolachlor varied from 179 to 264 mL g-1 in the soil horizons. K oc 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 $aAgrotóxico
650 $aÁgua
650 $aPoluição Ambiental
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 $tWater, Air and Soil Pollution$gv. 197, p. 175?183, 2009.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amapá. |
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Data corrente: |
01/03/2011 |
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Data da última atualização: |
01/03/2011 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
BRANDÃO, R. M. L.; PICANÇO, M. D. V.; SILVA, R. D. A. L.; SANTOS, C. |
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Afiliação: |
CESAR SANTOS, CPAF-AP. |
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Título: |
Conhecimento ecológico local: o apaiari (Astronotus ocellatus, Agassiz 1831) na região dos lagos do município de Pracuúba, Amapá. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: AQUACIÊNCIA, 2010, Recife. Anais... Recife: AQUABIO, UFRPE, 2010. |
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Idioma: |
Português |
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Notas: |
Resumo simples. |
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Thesagro: |
Operação pesqueira; Peixe de água doce. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/28860/1/AP-2010-EcologicoLocalPracuuba.pdf
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Marc: |
LEADER 00619nam a2200169 a 4500
001 1879621
005 2011-03-01
008 2010 bl uuuu u00u1 u #d
100 1 $aBRANDÃO, R. M. L.
245 $aConhecimento ecológico local$bo apaiari (Astronotus ocellatus, Agassiz 1831) na região dos lagos do município de Pracuúba, Amapá.$h[electronic resource]
260 $aIn: AQUACIÊNCIA, 2010, Recife. Anais... Recife: AQUABIO, UFRPE$c2010
500 $aResumo simples.
650 $aOperação pesqueira
650 $aPeixe de água doce
700 1 $aPICANÇO, M. D. V.
700 1 $aSILVA, R. D. A. L.
700 1 $aSANTOS, C.
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Embrapa Amapá (CPAF-AP) |
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