Evaluation of leaching potential of tebuthiuron using bioindicator plants
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Publication Date: | 2018 |
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Format: | Article |
Language: | eng |
Source: | Repositório Institucional da UNESP |
Download full: | http://dx.doi.org/10.1590/1808-1657000692015 http://hdl.handle.net/11449/183872 |
Summary: | ABSTRACT: The last destination of most herbicides used in agricultural systems is the soil. This is a dynamic interaction; herbicides can remain in the soil solution or be carried through the soil profile, reaching the water table. The objective of this work was to evaluate the leaching potential of the tebuthiuron herbicide using bioindicator plants grown in an Oxisol of sandy loam texture and in an Entisol of clay texture, after the occurrence of natural rainfall events. A complete randomized experimental design was used, in a 3×8 factorial arrangement, with four replications. The treatments consisted of three accumulated natural rainfall depths (30-40, 60-80, and 100-120 mm) and eight soil profile layers (0-3, 3-6, 6-9, 9-12, 12-15, 15-20, 20-25, and 25-30 cm). Soil samples were collected after the tebuthiuron herbicide application - 750 for clayey soil, and 600 g ha-1 for the sandy loam soil -and the rainfall events. PVC pipes with length of 30 cm and diameter of 15 cm were introduced into the soil profile for sampling. The pipes with soil columns were carefully removed by digging around them, to maintain the soil original integrity during collection and, subsequently, cut longitudinally for sowing the bioindicator species - cucumber (Cucumis sativus L.), and lettuce (Lactuca sativa L.). Then, the phytotoxicity in the bioindicator plants grown in these soils were evaluated at 5, 7, 10, and 12 days after sowing, using a grading scale of 0 to 100%. The mobility of the tebuthiuron herbicide was low in both soils, regardless of the rainfall depth, and the cucumber was the most suitable plant species to use as a bioindicator. |
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Evaluation of leaching potential of tebuthiuron using bioindicator plantsEstudo da lixiviação do herbicida tebuthiuron com plantas bioindicadorasHerbicide dynamicssoil profilesoil classweedsDinâmica de herbicidasperfil do solotipo de soloplantas daninhasABSTRACT: The last destination of most herbicides used in agricultural systems is the soil. This is a dynamic interaction; herbicides can remain in the soil solution or be carried through the soil profile, reaching the water table. The objective of this work was to evaluate the leaching potential of the tebuthiuron herbicide using bioindicator plants grown in an Oxisol of sandy loam texture and in an Entisol of clay texture, after the occurrence of natural rainfall events. A complete randomized experimental design was used, in a 3×8 factorial arrangement, with four replications. The treatments consisted of three accumulated natural rainfall depths (30-40, 60-80, and 100-120 mm) and eight soil profile layers (0-3, 3-6, 6-9, 9-12, 12-15, 15-20, 20-25, and 25-30 cm). Soil samples were collected after the tebuthiuron herbicide application - 750 for clayey soil, and 600 g ha-1 for the sandy loam soil -and the rainfall events. PVC pipes with length of 30 cm and diameter of 15 cm were introduced into the soil profile for sampling. The pipes with soil columns were carefully removed by digging around them, to maintain the soil original integrity during collection and, subsequently, cut longitudinally for sowing the bioindicator species - cucumber (Cucumis sativus L.), and lettuce (Lactuca sativa L.). Then, the phytotoxicity in the bioindicator plants grown in these soils were evaluated at 5, 7, 10, and 12 days after sowing, using a grading scale of 0 to 100%. The mobility of the tebuthiuron herbicide was low in both soils, regardless of the rainfall depth, and the cucumber was the most suitable plant species to use as a bioindicator.RESUMO: O solo é o destino final da maioria dos herbicidas utilizados no sistema agrícola e, sendo esta relação dinâmica, eles podem permanecer na solução ou ser carregados no perfil do solo, podendo atingir o lençol freático. O objetivo deste trabalho foi avaliar o potencial de lixiviação do herbicida tebuthiuron por meio de plantas bioindicadoras e após a ocorrência de precipitações pluviométricas naturais, em solos com texturas franco arenoso (Latossolo Vermelho-Amarelo) e argiloso (Neossolo Litólico). O delineamento experimental foi o inteiramente casualizado em um esquema fatorial 3 x 8 com quatro repetições, sendo três níveis de precipitação pluviométrica (30-40, 60-80 e 100-120 mm) e oito de profundidade do perfil do solo (0-3, 3-6, 6-9, 9-12, 12-15, 15-20, 20-25 e 25-30 cm). As coletas das amostras ocorreram após a aplicação do herbicida tebuthiuron nas doses de 750 e 600 g ha-1 para o solo argiloso e arenoso, respectivamente, e posterior acúmulo das precipitações. Para a coleta das amostras foram introduzidas, no perfil do solo, colunas de PVC com 30 cm de altura e 15 cm de diâmetro. As colunas foram retiradas cuidadosamente escavando-se ao seu redor, mantendo a integridade original do solo durante a coleta. Posteriormente, as colunas foram separadas com corte longitudinal, para a semeadura das espécies bioindicadoras pepino (Cucumis sativus L.) e alface (Lactuca sativa L.). Para as avaliações das plantas bioindicadoras nas colunas, adotou-se a escala de notas de 0 a 100% de fitotoxicidade, aos 5, 7, 10 e 12 dias após a semeadura. A mobilidade do herbicida tebuthiuron mostrou-se reduzida em ambos os tipos de solo estudado, independentemente da precipitação pluvial, e as plantas de pepino mostraram-se mais adequadas para serem utilizadas como espécie bioindicadora.Universidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de Ciências Agrárias e Veterinárias Departamento de Produção VegetalUNESP Faculdade de Ciências Agronômicas Departamento de Produção e Melhoramento VegetalUniversidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de Ciências Agrárias e Veterinárias Departamento de Produção VegetalUNESP Faculdade de Ciências Agronômicas Departamento de Produção e Melhoramento VegetalInstituto BiológicoUniversidade Estadual Paulista (Unesp)Silva Junior, Antonio Carlos DaGonçalves, Clebson GomesQueiroz, Juliana Roberta GobiMartins, Dagoberto2019-10-03T17:32:04Z2019-10-03T17:32:04Z2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article-application/pdfhttp://dx.doi.org/10.1590/1808-1657000692015Arquivos do Instituto Biológico. Instituto Biológico, v. 85, p. -, 2018.1808-1657http://hdl.handle.net/11449/18387210.1590/1808-1657000692015S1808-16572018000100220S1808-16572018000100220.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengArquivos do Instituto Biológicoinfo:eu-repo/semantics/openAccess2024-01-09T06:25:44Zoai:repositorio.unesp.br:11449/183872Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-09T06:25:44Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Evaluation of leaching potential of tebuthiuron using bioindicator plants Estudo da lixiviação do herbicida tebuthiuron com plantas bioindicadoras |
title |
Evaluation of leaching potential of tebuthiuron using bioindicator plants |
spellingShingle |
Evaluation of leaching potential of tebuthiuron using bioindicator plants Silva Junior, Antonio Carlos Da Herbicide dynamics soil profile soil class weeds Dinâmica de herbicidas perfil do solo tipo de solo plantas daninhas |
title_short |
Evaluation of leaching potential of tebuthiuron using bioindicator plants |
title_full |
Evaluation of leaching potential of tebuthiuron using bioindicator plants |
title_fullStr |
Evaluation of leaching potential of tebuthiuron using bioindicator plants |
title_full_unstemmed |
Evaluation of leaching potential of tebuthiuron using bioindicator plants |
title_sort |
Evaluation of leaching potential of tebuthiuron using bioindicator plants |
author |
Silva Junior, Antonio Carlos Da |
author_facet |
Silva Junior, Antonio Carlos Da Gonçalves, Clebson Gomes Queiroz, Juliana Roberta Gobi Martins, Dagoberto |
author_role |
author |
author2 |
Gonçalves, Clebson Gomes Queiroz, Juliana Roberta Gobi Martins, Dagoberto |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Silva Junior, Antonio Carlos Da Gonçalves, Clebson Gomes Queiroz, Juliana Roberta Gobi Martins, Dagoberto |
dc.subject.por.fl_str_mv |
Herbicide dynamics soil profile soil class weeds Dinâmica de herbicidas perfil do solo tipo de solo plantas daninhas |
topic |
Herbicide dynamics soil profile soil class weeds Dinâmica de herbicidas perfil do solo tipo de solo plantas daninhas |
description |
ABSTRACT: The last destination of most herbicides used in agricultural systems is the soil. This is a dynamic interaction; herbicides can remain in the soil solution or be carried through the soil profile, reaching the water table. The objective of this work was to evaluate the leaching potential of the tebuthiuron herbicide using bioindicator plants grown in an Oxisol of sandy loam texture and in an Entisol of clay texture, after the occurrence of natural rainfall events. A complete randomized experimental design was used, in a 3×8 factorial arrangement, with four replications. The treatments consisted of three accumulated natural rainfall depths (30-40, 60-80, and 100-120 mm) and eight soil profile layers (0-3, 3-6, 6-9, 9-12, 12-15, 15-20, 20-25, and 25-30 cm). Soil samples were collected after the tebuthiuron herbicide application - 750 for clayey soil, and 600 g ha-1 for the sandy loam soil -and the rainfall events. PVC pipes with length of 30 cm and diameter of 15 cm were introduced into the soil profile for sampling. The pipes with soil columns were carefully removed by digging around them, to maintain the soil original integrity during collection and, subsequently, cut longitudinally for sowing the bioindicator species - cucumber (Cucumis sativus L.), and lettuce (Lactuca sativa L.). Then, the phytotoxicity in the bioindicator plants grown in these soils were evaluated at 5, 7, 10, and 12 days after sowing, using a grading scale of 0 to 100%. The mobility of the tebuthiuron herbicide was low in both soils, regardless of the rainfall depth, and the cucumber was the most suitable plant species to use as a bioindicator. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018 2019-10-03T17:32:04Z 2019-10-03T17:32:04Z |
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/10.1590/1808-1657000692015 Arquivos do Instituto Biológico. Instituto Biológico, v. 85, p. -, 2018. 1808-1657 http://hdl.handle.net/11449/183872 10.1590/1808-1657000692015 S1808-16572018000100220 S1808-16572018000100220.pdf |
url |
http://dx.doi.org/10.1590/1808-1657000692015 http://hdl.handle.net/11449/183872 |
identifier_str_mv |
Arquivos do Instituto Biológico. Instituto Biológico, v. 85, p. -, 2018. 1808-1657 10.1590/1808-1657000692015 S1808-16572018000100220 S1808-16572018000100220.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Arquivos do Instituto Biológico |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
- application/pdf |
dc.publisher.none.fl_str_mv |
Instituto Biológico |
publisher.none.fl_str_mv |
Instituto Biológico |
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 |
|
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1797790243204628480 |