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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
16/07/1999 |
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Data da última atualização: |
16/07/1999 |
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Autoria: |
LAABS, V.; AMELUNG, W.; ZECH, W. |
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Título: |
Pesticides in soil, sediment, and water samples from a small microbasin in the Brazilian cerrados. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
In: THOMAS, R.; AYARZA, M.A., ed. Sustainable land management for the oxisols of the Latin American savannas: dynamics of soil organic matter and indicators of soil quality. Cali: CIAT, 1999. |
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Páginas: |
p.203-214. |
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Idioma: |
Inglês |
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Conteúdo: |
The expansion of intensive agriculture in the tropics is leading to increasing concern about environmental pollution from pesticides in these regions. This study was conducted in the Brazilian savannas, also known as the Cerrados, near Uberlandia, to determine the magnitude of biocide concentrations in the small catchment of the Pantaninho stream and its reservoirs. Samples of soils, surface and well water, and sediments were collected on 10-12 December 1995, and analyzed for 15 herbicides and inseticides. In all surface-water samples, atrazine was detected at concentrations of 0.05-0.13 ug/L. The sampled well water (used for drinking) on farms did not contain detectable residues of biocides. Sediments, taken from the stream's banks, were contaminated at two sampling locations with either cyhalothrin (at 4.0 ug/kg) or simazine (at 3.2 ug/kg). Soil samples from maize fields usually showed higher concentrations of simazine, atrazine, and chlorpyrifos (ranging from 80 to 180 ug/ka at 18 to 35 days after application) than did those from soybean fields. Fluazifop-butyl, monocrotophos, and cyhalothrin were found 0-8 days after application at concentrations between 5 and 25 ug/kg. Carry-over residues of metolachlor, atrazine, simazine, cyanazine, and trifluralin were also detected at concentrations of around 2-15 ug/kg, indicating that pesticides can accumulate in tropical soils. Sampling at depth in a maize field proved that simazine and atrazine, although mainly restricted to the top 10-cm layer (40-120 ug/kg), are highly mobile, as was triazine, which was continuously detected at the maximum sampling depht (70 cm) in concentrations of 2-4 ug/kg. Although, when compared with temperate regions, these concentration levels of biocides were medium to low, they showed a potential for accumulation and leaching, which, over the long term, may lead to pollution of water resources. MenosThe expansion of intensive agriculture in the tropics is leading to increasing concern about environmental pollution from pesticides in these regions. This study was conducted in the Brazilian savannas, also known as the Cerrados, near Uberlandia, to determine the magnitude of biocide concentrations in the small catchment of the Pantaninho stream and its reservoirs. Samples of soils, surface and well water, and sediments were collected on 10-12 December 1995, and analyzed for 15 herbicides and inseticides. In all surface-water samples, atrazine was detected at concentrations of 0.05-0.13 ug/L. The sampled well water (used for drinking) on farms did not contain detectable residues of biocides. Sediments, taken from the stream's banks, were contaminated at two sampling locations with either cyhalothrin (at 4.0 ug/kg) or simazine (at 3.2 ug/kg). Soil samples from maize fields usually showed higher concentrations of simazine, atrazine, and chlorpyrifos (ranging from 80 to 180 ug/ka at 18 to 35 days after application) than did those from soybean fields. Fluazifop-butyl, monocrotophos, and cyhalothrin were found 0-8 days after application at concentrations between 5 and 25 ug/kg. Carry-over residues of metolachlor, atrazine, simazine, cyanazine, and trifluralin were also detected at concentrations of around 2-15 ug/kg, indicating that pesticides can accumulate in tropical soils. Sampling at depth in a maize field proved that simazine and atrazine, although mainly restricted to the... Mostrar Tudo |
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Palavras-Chave: |
Sediment. |
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Thesagro: |
Água; Bacia Hidrográfica; Cerrado; Oxisol; Pesticida; Poluição Ambiental; Sedimento; Solo. |
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Thesaurus Nal: |
Ferralsols; pesticides; pollution; soil; water; watersheds. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02879naa a2200337 a 4500
001 1545413
005 1999-07-16
008 1999 bl uuuu u00u1 u #d
100 1 $aLAABS, V.
245 $aPesticides in soil, sediment, and water samples from a small microbasin in the Brazilian cerrados.
260 $c1999
300 $ap.203-214.
520 $aThe expansion of intensive agriculture in the tropics is leading to increasing concern about environmental pollution from pesticides in these regions. This study was conducted in the Brazilian savannas, also known as the Cerrados, near Uberlandia, to determine the magnitude of biocide concentrations in the small catchment of the Pantaninho stream and its reservoirs. Samples of soils, surface and well water, and sediments were collected on 10-12 December 1995, and analyzed for 15 herbicides and inseticides. In all surface-water samples, atrazine was detected at concentrations of 0.05-0.13 ug/L. The sampled well water (used for drinking) on farms did not contain detectable residues of biocides. Sediments, taken from the stream's banks, were contaminated at two sampling locations with either cyhalothrin (at 4.0 ug/kg) or simazine (at 3.2 ug/kg). Soil samples from maize fields usually showed higher concentrations of simazine, atrazine, and chlorpyrifos (ranging from 80 to 180 ug/ka at 18 to 35 days after application) than did those from soybean fields. Fluazifop-butyl, monocrotophos, and cyhalothrin were found 0-8 days after application at concentrations between 5 and 25 ug/kg. Carry-over residues of metolachlor, atrazine, simazine, cyanazine, and trifluralin were also detected at concentrations of around 2-15 ug/kg, indicating that pesticides can accumulate in tropical soils. Sampling at depth in a maize field proved that simazine and atrazine, although mainly restricted to the top 10-cm layer (40-120 ug/kg), are highly mobile, as was triazine, which was continuously detected at the maximum sampling depht (70 cm) in concentrations of 2-4 ug/kg. Although, when compared with temperate regions, these concentration levels of biocides were medium to low, they showed a potential for accumulation and leaching, which, over the long term, may lead to pollution of water resources.
650 $aFerralsols
650 $apesticides
650 $apollution
650 $asoil
650 $awater
650 $awatersheds
650 $aÁgua
650 $aBacia Hidrográfica
650 $aCerrado
650 $aOxisol
650 $aPesticida
650 $aPoluição Ambiental
650 $aSedimento
650 $aSolo
653 $aSediment
700 1 $aAMELUNG, W.
700 1 $aZECH, W.
773 $tIn: THOMAS, R.; AYARZA, M.A., ed. Sustainable land management for the oxisols of the Latin American savannas: dynamics of soil organic matter and indicators of soil quality. Cali: CIAT, 1999.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
10/02/2017 |
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Data da última atualização: |
29/03/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
IANELLA, P.; VARELA, E. S.; ALVES, A. L.; VILLELA, L. C. V.; SILVA, N. M. A. da; YAMAGISHI, M. E. B.; OLIVEIRA, F. S. de; PAIVA, S. R.; CAETANO, A. R. |
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Afiliação: |
PATRICIA IANELLA, Cenargen; EDUARDO SOUSA VARELA, CNPASA; ANDERSON LUIS ALVES, SPM - E. Campinas; LUCIANA CRISTINE VASQUES VILLELA, CNPASA; NAIARA MILAGRES AUGUSTO DA SILVA, Cenargen; MICHEL EDUARDO BELEZA YAMAGISHI, CNPTIA; FERNANDA STRINGASSI DE OLIVEIRA, CNPTIA; SAMUEL REZENDE PAIVA, SRI; ALEXANDRE RODRIGUES CAETANO, Cenargen. |
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Título: |
SNP discovery in the South American Frehwater fish tambaqui (Colossoma macroponum) by deep sequenciang of reduced representation libraries. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: PLANT & ANIMAL GENOME CONFERENCE, 24., 2016, San Diego, CA. [Abstracts...]. San Diego: [s. n.], 2016. |
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Idioma: |
Inglês |
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Notas: |
P0484. |
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Thesagro: |
Tambaqui. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/155285/1/PAG-p0484.pdf
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Marc: |
LEADER 00757nam a2200217 a 4500
001 2063494
005 2023-03-29
008 2016 bl uuuu u00u1 u #d
100 1 $aIANELLA, P.
245 $aSNP discovery in the South American Frehwater fish tambaqui (Colossoma macroponum) by deep sequenciang of reduced representation libraries.$h[electronic resource]
260 $aIn: PLANT & ANIMAL GENOME CONFERENCE, 24., 2016, San Diego, CA. [Abstracts...]. San Diego: [s. n.]$c2016
500 $aP0484.
650 $aTambaqui
700 1 $aVARELA, E. S.
700 1 $aALVES, A. L.
700 1 $aVILLELA, L. C. V.
700 1 $aSILVA, N. M. A. da
700 1 $aYAMAGISHI, M. E. B.
700 1 $aOLIVEIRA, F. S. de
700 1 $aPAIVA, S. R.
700 1 $aCAETANO, A. R.
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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