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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
22/05/2007 |
Data da última atualização: |
08/06/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MATALLO, M. B.; SPADOTTO, C. A.; LUCHINI, L. C.; GOMES, M. A. F. |
Afiliação: |
Marcus B. Matallo, Centro Experimental Central do Instituto Biológico, Campinas, São Paulo, Brazil; CLAUDIO APARECIDO SPADOTTO, SGTE; Luiz C. Luchini, Centro de Pesquisa e Desenvolvimento em Proteção, Ambiental Instituto Biológico, São Paulo, Brazil; MARCO ANTONIO FERREIRA GOMES, CNPMA. |
Título: |
Sorption, degradation, and leaching of tebuthiuron and diuron in soil columns. |
Ano de publicação: |
2005 |
Fonte/Imprenta: |
Journal of Environmental Science and Health. Part B, Pesticides, Food Contaminants, and Agricultural Wastes, New York, v. B40, n. 1, p. 39-43, 2005. |
Idioma: |
Inglês |
Conteúdo: |
A study in small outdoor lisimeters was carried out to determine the leaching of the herbicides tebuthiuron and diuron in different soil types, using undisturbed soil columns. Soil sorption and degradation for both herbicides were also studied in laboratory. The multi-layered AF (Attenuation Factor) model was evaluated for predicting the herbicides leaching in undisturbed soil columns. Tebuthiuron leached in larger amounts than diuron in both soils. Sorption was well represented by linear and Freundlich equations, however parameters from the linear equations were used in the AF model. In general, both herbicides presented very low sorption, with diuron presenting lower values of sorption coefficient than tebuthiuron in the two soils. Chromatographic data had indicated rapid late degradation of diuron and tebuthiuron in both soil types, in two different depths. Simple exponential equation was not able to represent degradation, thus a bi-exponential equation was used, and some model adjusting was needed. Average measured amounts of each herbicide were compared with amounts predicted by the multi-layered-soil AF model. The AF model was able to predict leaching amounts in the sandy soil, especially for diuron, however its performance was not good in the clayey soil. |
Palavras-Chave: |
Degradação; Deteriorização do solo; Tebutiuron. |
Thesagro: |
Herbicida; Lixiviação; Modelo matemático; Solo; Sorção. |
Thesaurus Nal: |
diuron. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02107naa a2200265 a 4500 001 1015449 005 2015-06-08 008 2005 bl uuuu u00u1 u #d 100 1 $aMATALLO, M. B. 245 $aSorption, degradation, and leaching of tebuthiuron and diuron in soil columns.$h[electronic resource] 260 $c2005 520 $aA study in small outdoor lisimeters was carried out to determine the leaching of the herbicides tebuthiuron and diuron in different soil types, using undisturbed soil columns. Soil sorption and degradation for both herbicides were also studied in laboratory. The multi-layered AF (Attenuation Factor) model was evaluated for predicting the herbicides leaching in undisturbed soil columns. Tebuthiuron leached in larger amounts than diuron in both soils. Sorption was well represented by linear and Freundlich equations, however parameters from the linear equations were used in the AF model. In general, both herbicides presented very low sorption, with diuron presenting lower values of sorption coefficient than tebuthiuron in the two soils. Chromatographic data had indicated rapid late degradation of diuron and tebuthiuron in both soil types, in two different depths. Simple exponential equation was not able to represent degradation, thus a bi-exponential equation was used, and some model adjusting was needed. Average measured amounts of each herbicide were compared with amounts predicted by the multi-layered-soil AF model. The AF model was able to predict leaching amounts in the sandy soil, especially for diuron, however its performance was not good in the clayey soil. 650 $adiuron 650 $aHerbicida 650 $aLixiviação 650 $aModelo matemático 650 $aSolo 650 $aSorção 653 $aDegradação 653 $aDeteriorização do solo 653 $aTebutiuron 700 1 $aSPADOTTO, C. A. 700 1 $aLUCHINI, L. C. 700 1 $aGOMES, M. A. F. 773 $tJournal of Environmental Science and Health. Part B, Pesticides, Food Contaminants, and Agricultural Wastes, New York$gv. B40, n. 1, p. 39-43, 2005.
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Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
14/03/2008 |
Data da última atualização: |
27/02/2009 |
Tipo da produção científica: |
Circular Técnica |
Autoria: |
INAMASU, R. Y.; SIMÕES. M. dos S.; LUCHIARI JÚNIOR, A.; RABELLO, L. M.; MOLIN, J. P. |
Título: |
Sistema de medida de condutividade elétrica do solo adaptado a um implemento agrícola (subsolador). |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
São Carlos, SP: Embrapa Instrumentação Agropecuária, 2007. |
Páginas: |
5 p. |
Série: |
(Embrapa Instrumentação Agropecuária. Circular Técnica, 40). |
Idioma: |
Português |
Palavras-Chave: |
Instrumentação. |
Thesagro: |
Condutividade Eletrica; Solo. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPDIA-2009-09/11028/1/CiT40_2007.pdf
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Marc: |
LEADER 00676nam a2200205 a 4500 001 1028115 005 2009-02-27 008 2007 bl uuuu u0uu1 u #d 100 1 $aINAMASU, R. Y. 245 $aSistema de medida de condutividade elétrica do solo adaptado a um implemento agrícola (subsolador). 260 $aSão Carlos, SP: Embrapa Instrumentação Agropecuária$c2007 300 $a5 p. 490 $a(Embrapa Instrumentação Agropecuária. Circular Técnica, 40). 650 $aCondutividade Eletrica 650 $aSolo 653 $aInstrumentação 700 1 $aSIMÕES. M. dos S. 700 1 $aLUCHIARI JÚNIOR, A. 700 1 $aRABELLO, L. M. 700 1 $aMOLIN, J. P.
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