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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
18/09/2008 |
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Data da última atualização: |
18/09/2008 |
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Autoria: |
PIOLA, L.; FUCHS, J.; ONETO, M. L.; BASACK, S.; GIMÉNEZ, R.; MASSARO, R.; PAPA, J. C.; KESTEN, E.; CASABÉ, N. |
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Título: |
Assessment of the adverse effects of chlorpyrifos in an Argentine wheat field. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
Increasing agricultural practices, including the use of pesticides, demand the adaptation of
methods to assess the potential environmental risk of these compounds. The ecotoxicological
effects of pesticides can be assessed by monitoring the status of communities in real ecosystems
and through the use of laboratory toxicity tests. Soil is a complex ecosystem; test results depend
not only on the intrinsic physico-chemical properties of the pesticide, but are also influenced by
the natural and anthropic properties of the soil.
Plots of a wheat field in Santa Fe Province, Argentina (33°55' 24" S, 61°16?42" W), were sprayed
with chlorpyrifos (CPF) formulations at two recommended rates: 240 g a.i./ha (low rate; LR) and
960 g a.i./ha (high rate; HR), 30 days after seeding, under controlled conditions, according to a
randomized complete block design with 3 replicates. Control plots were treated with water. The
field selected was a clay loam soil with an abundant residue cover. The experiment took place
during July-November 2005. For laboratory bioassays employing Eisenia andrei earthworms
(neutral red retention time ?NRRT-, comet assay, avoidance behavior and bait-lamina laboratory
test), soils from a depth of 0-10 cm were collected 1 day (t1) and 14 days (t2) after treatments.
Two field bioassays related to organic matter breakdown (litterbag and bait-lamina assays)
were included and samplings were performed at t1, t2, 97 days (t3) and 118 days (t4). Earthworm
populations were assessed using the formalin and hand sorting methods.
Our aim was to evaluate the usefulness of a series of endpoints for assessing adverse effects of
the extensive use of this agrochemical.
Plots treated at LR presented an average concentration of 0.02 ± 0.01 mg/kg (0-10 cm layer) at
t1. CPF was not detected in control plots. At t2, CPF concentration remained at the same value.
Plots treated at HR presented an average concentration of 0.10 ± 0.02 mg/kg at t1 and 0.03 ±
0.01 mg/kg at t2. 97 days after treatment (t3), CPF was not detected (detection limit: 0.01 mg/
kg). Bait-lamina field test was positive for both treatments at t3; however no significant
concentration-effect relationship was observed. At t4 the effect on feeding activity was no longer
observed. The litterbag test didn?t show significant differences with controls. We found Octolasion
cyaneum (Lumbricidae) and Microscolex dubium (Acanthodrilidae).
Concerning the laboratory bioassays, both NRRT and comet assay were responsive to CPF
formulations when earthworms were exposed during 7 days to treated soils sampled at t1 and
to the higher concentration at t2. Avoidance behaviour was controversial. Bait-lamina test showed
a significant reduction on feeding rate in earthworms exposed to HR soils sampled at t1; no
significant decrease was observed at t2.
Some of the studied endpoints were modified at the low CPF concentrations found in the soil.
Previous results of our laboratory on a soya field of the Santa Fe Province sprayed with CPF
(JSS 7, 232, 2007) are in good agreement with those obtained in this field-laboratory study.
Acknowledgement: University of Buenos Aires (grant X-208-2004?2007); CONICET (grant PIP
5010-2005?2006). MenosIncreasing agricultural practices, including the use of pesticides, demand the adaptation of
methods to assess the potential environmental risk of these compounds. The ecotoxicological
effects of pesticides can be assessed by monitoring the status of communities in real ecosystems
and through the use of laboratory toxicity tests. Soil is a complex ecosystem; test results depend
not only on the intrinsic physico-chemical properties of the pesticide, but are also influenced by
the natural and anthropic properties of the soil.
Plots of a wheat field in Santa Fe Province, Argentina (33°55' 24" S, 61°16?42" W), were sprayed
with chlorpyrifos (CPF) formulations at two recommended rates: 240 g a.i./ha (low rate; LR) and
960 g a.i./ha (high rate; HR), 30 days after seeding, under controlled conditions, according to a
randomized complete block design with 3 replicates. Control plots were treated with water. The
field selected was a clay loam soil with an abundant residue cover. The experiment took place
during July-November 2005. For laboratory bioassays employing Eisenia andrei earthworms
(neutral red retention time ?NRRT-, comet assay, avoidance behavior and bait-lamina laboratory
test), soils from a depth of 0-10 cm were collected 1 day (t1) and 14 days (t2) after treatments.
Two field bioassays related to organic matter breakdown (litterbag and bait-lamina assays)
were included and samplings were performed at t1, t2, 97 days (t3) and 118 days (t4). Earthworm
populations were asse... Mostrar Tudo |
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Categoria do assunto: |
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LEADER 04052naa a2200217 a 4500
001 1314861
005 2008-09-18
008 2008 bl uuuu u00u1 u #d
100 1 $aPIOLA, L.
245 $aAssessment of the adverse effects of chlorpyrifos in an Argentine wheat field.
260 $c2008
520 $aIncreasing agricultural practices, including the use of pesticides, demand the adaptation of methods to assess the potential environmental risk of these compounds. The ecotoxicological effects of pesticides can be assessed by monitoring the status of communities in real ecosystems and through the use of laboratory toxicity tests. Soil is a complex ecosystem; test results depend not only on the intrinsic physico-chemical properties of the pesticide, but are also influenced by the natural and anthropic properties of the soil. Plots of a wheat field in Santa Fe Province, Argentina (33°55' 24" S, 61°16?42" W), were sprayed with chlorpyrifos (CPF) formulations at two recommended rates: 240 g a.i./ha (low rate; LR) and 960 g a.i./ha (high rate; HR), 30 days after seeding, under controlled conditions, according to a randomized complete block design with 3 replicates. Control plots were treated with water. The field selected was a clay loam soil with an abundant residue cover. The experiment took place during July-November 2005. For laboratory bioassays employing Eisenia andrei earthworms (neutral red retention time ?NRRT-, comet assay, avoidance behavior and bait-lamina laboratory test), soils from a depth of 0-10 cm were collected 1 day (t1) and 14 days (t2) after treatments. Two field bioassays related to organic matter breakdown (litterbag and bait-lamina assays) were included and samplings were performed at t1, t2, 97 days (t3) and 118 days (t4). Earthworm populations were assessed using the formalin and hand sorting methods. Our aim was to evaluate the usefulness of a series of endpoints for assessing adverse effects of the extensive use of this agrochemical. Plots treated at LR presented an average concentration of 0.02 ± 0.01 mg/kg (0-10 cm layer) at t1. CPF was not detected in control plots. At t2, CPF concentration remained at the same value. Plots treated at HR presented an average concentration of 0.10 ± 0.02 mg/kg at t1 and 0.03 ± 0.01 mg/kg at t2. 97 days after treatment (t3), CPF was not detected (detection limit: 0.01 mg/ kg). Bait-lamina field test was positive for both treatments at t3; however no significant concentration-effect relationship was observed. At t4 the effect on feeding activity was no longer observed. The litterbag test didn?t show significant differences with controls. We found Octolasion cyaneum (Lumbricidae) and Microscolex dubium (Acanthodrilidae). Concerning the laboratory bioassays, both NRRT and comet assay were responsive to CPF formulations when earthworms were exposed during 7 days to treated soils sampled at t1 and to the higher concentration at t2. Avoidance behaviour was controversial. Bait-lamina test showed a significant reduction on feeding rate in earthworms exposed to HR soils sampled at t1; no significant decrease was observed at t2. Some of the studied endpoints were modified at the low CPF concentrations found in the soil. Previous results of our laboratory on a soya field of the Santa Fe Province sprayed with CPF (JSS 7, 232, 2007) are in good agreement with those obtained in this field-laboratory study. Acknowledgement: University of Buenos Aires (grant X-208-2004?2007); CONICET (grant PIP 5010-2005?2006).
700 1 $aFUCHS, J.
700 1 $aONETO, M. L.
700 1 $aBASACK, S.
700 1 $aGIMÉNEZ, R.
700 1 $aMASSARO, R.
700 1 $aPAPA, J. C.
700 1 $aKESTEN, E.
700 1 $aCASABÉ, N.
773 $tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
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Embrapa Florestas (CNPF) |
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| Registros recuperados : 5 | |
| 2. |  | ROCHA, L. C.; JANKOWSKA, M.; FUCHS, J.; MITTELMANN, A.; TECHIO, V. H.; HOUBEN, A. Decondensation of chromosomal 45S rDNA sites in Lolium and Festuca genotypes does not result in karyotype instability. Protoplasma, v. 254, n. 1, p. 285-292, 2017. Publicado em 13 jan. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 3. | | ROCHA, L. C.; JANKOWSKA, M.; FUCHS, J.; MITTELMANN, A.; TECHIO, V.; HOUBEN, A. Decondensation of chromosomal 45S RDNA sites in Lolium species does not promote loss of DNA. In: EUROPEAN WORKSHOP ON PLANT CHROMATIN, 4., 2015, Uppsala, Sweden. Proceedings... Uppsala: INRA, 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
| |
| 4. | | PIOLA, L.; FUCHS, J.; ONETO, M. L.; BASACK, S.; GIMÉNEZ, R.; MASSARO, R.; PAPA, J. C.; KESTEN, E.; CASABÉ, N. Assessment of the adverse effects of chlorpyrifos in an Argentine wheat field. In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.| Biblioteca(s): Embrapa Florestas. |
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| 5. | | PIOLA, L.; FUCHS, J.; ONETO, M. L.; BASACK, S.; GIMÉNEZ, R.; MASSARO, R.; PAPA, J. C.; KESTEN, E.; CASABÉ, N. Biomarkers for the assessment of chlorpyrifos effects on earthworms and on soil functional parameters. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 8, p. 874-880, ago. 2009. Título em português: Biomarcadores para a avaliação dos efeitos de clorpirifós em minhocas e em parâmetros funcionais do solo.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 5 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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