Evolução de CO2 e atividades enzimáticas em amostras de solo tratado com herbicidas
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S0100-83582009000300022 http://hdl.handle.net/11449/109964 |
Resumo: | Effects of bentazon, metolachlor, trifluralin, imazethapyr, imazethapyr+lactofen, haloxyfop-methyl, glyphosate and chlorimuron-ethyl at rates of 2 and 10 times the equivalent commercial dose on soil microbial activity was evaluated in soil samples extracted from a field never treated before. Global soil microbe respiration, estimated by CO2 production at 2, 4, 8, 12, 16, 20, 24 and 28 days of soil incubation and enzymatic activities (dehydrogenase and fluorescein diacetate hydrolysis) at 8 and 28 days were used as bioindicators. Bentazon and mixture imazethapyr+lactofen at the highest rate and haloxyfop-methyl at both rates, inhibited soil respiration although with differences in timing and duration. None of the herbicides affected FDA hydrolysis. Dehydrogenase activity was inhibited at 8 days of incubation with bentazon and imazethapyr at high rates but it was stimulated by metolachlor and imazethapyr at low rate and glyphosate at the highest rate. Herbicide effects on soil microbial activity was detected with higher sensitivity by global soil microbe respiration and dehydrogenase activity than by FDA hydrolysis. Only dehydrogenase activity and soil respiration estimations at 8 days of soil incubation had significant correlation. Results indicated the need of multiple estimations when evaluating herbicides effects on soil microbiota |
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Repositório Institucional da UNESP |
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Evolução de CO2 e atividades enzimáticas em amostras de solo tratado com herbicidasCO2 evolution and enzymatic activites in herbicide-treated soil samplesbentazondehydrogenaseFDAhaloxyfop-methylimazethapyr + lactofenmicrobial respirationBentazonDesidrogenaseFDAhaloxyfop-methylimazethapyr + lactofenRespiração microbianaEffects of bentazon, metolachlor, trifluralin, imazethapyr, imazethapyr+lactofen, haloxyfop-methyl, glyphosate and chlorimuron-ethyl at rates of 2 and 10 times the equivalent commercial dose on soil microbial activity was evaluated in soil samples extracted from a field never treated before. Global soil microbe respiration, estimated by CO2 production at 2, 4, 8, 12, 16, 20, 24 and 28 days of soil incubation and enzymatic activities (dehydrogenase and fluorescein diacetate hydrolysis) at 8 and 28 days were used as bioindicators. Bentazon and mixture imazethapyr+lactofen at the highest rate and haloxyfop-methyl at both rates, inhibited soil respiration although with differences in timing and duration. None of the herbicides affected FDA hydrolysis. Dehydrogenase activity was inhibited at 8 days of incubation with bentazon and imazethapyr at high rates but it was stimulated by metolachlor and imazethapyr at low rate and glyphosate at the highest rate. Herbicide effects on soil microbial activity was detected with higher sensitivity by global soil microbe respiration and dehydrogenase activity than by FDA hydrolysis. Only dehydrogenase activity and soil respiration estimations at 8 days of soil incubation had significant correlation. Results indicated the need of multiple estimations when evaluating herbicides effects on soil microbiotaOs efeitos dos herbicidas bentazon, metolachlor, trifluralin, imazethapyr, imazethapyr+lactofen, haloxyfop-methyl, glyphosate e chlorimuron-ethyl, testados em duas concentrações (duas e dez vezes a dose média recomendada por hectare), sobre a atividade microbiana foram estudados em amostras de solo que nunca haviam recebido tratamento com pesticidas. Como bioindicadores, utilizou-se a respiração microbiana, quantificando a emissão de CO2 aos 2, 4, 8, 12, 16, 20 e 24 dias após incubação, a atividade da enzima desidrogenase e a hidrólise de diacetato de fluoresceína (FDA), aos 8 e 28 dias. Bentazon e a mistura de imazethapyr+lactofen na maior concentração e o haloxyfop-methyl nas duas concentrações apresentaram efeitos inibitórios na respiração edáfica, embora diferentes em época e duração do efeito. Nenhum dos tratamentos herbicidas afetou a hidrólise da FDA. A atividade da desidrogenase foi inibida, o que foi verificado em análise realizada aos oito dias,nas amostras de solo com alta concentração de bentazon e imazethapyr; no entanto, foi estimulada nos tratamentos com baixa concentração de metolachlor e imazethapyr e na maior concentração de glyphosate. A respiração basal e a atividade da desidrogenase mostraram maior sensibilidade na detecção de efeitos dos herbicidas sobre a microbiota do solo que as determinações da hidrólise de FDA. Apenas foi encontrada correlação significativa entre a atividade da desidrogenase e a respiração basal aos oito dias de incubação. Os resultados destacam a importância da consideração de múltiplos indicadores na avaliação dos efeitos de herbicidas na microbiota do solo.UdelaR Facultad de Agronomía Dep. Protección VegetalUNESP FCAVJ Dep. de FitossanidadeUdelaR Facultad de Agronomia Dep. Biometría, Estadística y ComputaciónUNESP FCAVJ Dep. de FitossanidadeSociedade Brasileira da Ciência das Plantas DaninhasUdelaR Facultad de Agronomía Dep. Protección VegetalUniversidade Estadual Paulista (Unesp)UdelaR Facultad de Agronomia Dep. Biometría, Estadística y ComputaciónFernandez, G.Pitelli, R.a. [UNESP]Cadenazzi, M.2014-10-01T13:08:42Z2014-10-01T13:08:42Z2009info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article601-608application/pdfhttp://dx.doi.org/10.1590/S0100-83582009000300022Planta Daninha. Sociedade Brasileira da Ciência das Plantas Daninhas , v. 27, n. 3, p. 601-608, 2009.0100-8358http://hdl.handle.net/11449/10996410.1590/S0100-83582009000300022S0100-83582009000300022WOS:000270596800022S0100-83582009000300022.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporPlanta Daninha0.5440,365info:eu-repo/semantics/openAccess2024-06-06T15:49:37Zoai:repositorio.unesp.br:11449/109964Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:40:33.373889Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Evolução de CO2 e atividades enzimáticas em amostras de solo tratado com herbicidas CO2 evolution and enzymatic activites in herbicide-treated soil samples |
title |
Evolução de CO2 e atividades enzimáticas em amostras de solo tratado com herbicidas |
spellingShingle |
Evolução de CO2 e atividades enzimáticas em amostras de solo tratado com herbicidas Fernandez, G. bentazon dehydrogenase FDA haloxyfop-methyl imazethapyr + lactofen microbial respiration Bentazon Desidrogenase FDA haloxyfop-methyl imazethapyr + lactofen Respiração microbiana |
title_short |
Evolução de CO2 e atividades enzimáticas em amostras de solo tratado com herbicidas |
title_full |
Evolução de CO2 e atividades enzimáticas em amostras de solo tratado com herbicidas |
title_fullStr |
Evolução de CO2 e atividades enzimáticas em amostras de solo tratado com herbicidas |
title_full_unstemmed |
Evolução de CO2 e atividades enzimáticas em amostras de solo tratado com herbicidas |
title_sort |
Evolução de CO2 e atividades enzimáticas em amostras de solo tratado com herbicidas |
author |
Fernandez, G. |
author_facet |
Fernandez, G. Pitelli, R.a. [UNESP] Cadenazzi, M. |
author_role |
author |
author2 |
Pitelli, R.a. [UNESP] Cadenazzi, M. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
UdelaR Facultad de Agronomía Dep. Protección Vegetal Universidade Estadual Paulista (Unesp) UdelaR Facultad de Agronomia Dep. Biometría, Estadística y Computación |
dc.contributor.author.fl_str_mv |
Fernandez, G. Pitelli, R.a. [UNESP] Cadenazzi, M. |
dc.subject.por.fl_str_mv |
bentazon dehydrogenase FDA haloxyfop-methyl imazethapyr + lactofen microbial respiration Bentazon Desidrogenase FDA haloxyfop-methyl imazethapyr + lactofen Respiração microbiana |
topic |
bentazon dehydrogenase FDA haloxyfop-methyl imazethapyr + lactofen microbial respiration Bentazon Desidrogenase FDA haloxyfop-methyl imazethapyr + lactofen Respiração microbiana |
description |
Effects of bentazon, metolachlor, trifluralin, imazethapyr, imazethapyr+lactofen, haloxyfop-methyl, glyphosate and chlorimuron-ethyl at rates of 2 and 10 times the equivalent commercial dose on soil microbial activity was evaluated in soil samples extracted from a field never treated before. Global soil microbe respiration, estimated by CO2 production at 2, 4, 8, 12, 16, 20, 24 and 28 days of soil incubation and enzymatic activities (dehydrogenase and fluorescein diacetate hydrolysis) at 8 and 28 days were used as bioindicators. Bentazon and mixture imazethapyr+lactofen at the highest rate and haloxyfop-methyl at both rates, inhibited soil respiration although with differences in timing and duration. None of the herbicides affected FDA hydrolysis. Dehydrogenase activity was inhibited at 8 days of incubation with bentazon and imazethapyr at high rates but it was stimulated by metolachlor and imazethapyr at low rate and glyphosate at the highest rate. Herbicide effects on soil microbial activity was detected with higher sensitivity by global soil microbe respiration and dehydrogenase activity than by FDA hydrolysis. Only dehydrogenase activity and soil respiration estimations at 8 days of soil incubation had significant correlation. Results indicated the need of multiple estimations when evaluating herbicides effects on soil microbiota |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009 2014-10-01T13:08:42Z 2014-10-01T13:08:42Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S0100-83582009000300022 Planta Daninha. Sociedade Brasileira da Ciência das Plantas Daninhas , v. 27, n. 3, p. 601-608, 2009. 0100-8358 http://hdl.handle.net/11449/109964 10.1590/S0100-83582009000300022 S0100-83582009000300022 WOS:000270596800022 S0100-83582009000300022.pdf |
url |
http://dx.doi.org/10.1590/S0100-83582009000300022 http://hdl.handle.net/11449/109964 |
identifier_str_mv |
Planta Daninha. Sociedade Brasileira da Ciência das Plantas Daninhas , v. 27, n. 3, p. 601-608, 2009. 0100-8358 10.1590/S0100-83582009000300022 S0100-83582009000300022 WOS:000270596800022 S0100-83582009000300022.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Planta Daninha 0.544 0,365 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
601-608 application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira da Ciência das Plantas Daninhas |
publisher.none.fl_str_mv |
Sociedade Brasileira da Ciência das Plantas Daninhas |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128263898267648 |