Leaching potential and degradation of diuron in two soils of contrasting texture - DOI: 10.4025/actasciagron.v30i5.5963
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum. Agronomy (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5963 |
Resumo: | This research was aimed at studying the leaching of diuron in soil columns, as well as the effect of different methods of reduction of microbial activity on diuron degradation in samples of a sandy loam soil (LVd) and a clay soil (LRd). To measure the downward movement of diuron (0; 1.6 and 3.2 kg ha-1), water layers of 0, 20 40, 60 and 80 mm were applied. For degradation studies, the methods used to restrict were as follow: sterilized in autoclave, methyl bromide application, amoxicillin, captan and amoxicilin+captan; soil samples were kept with or without light incidence. Water depths > 60 mm were enough to promote observable leaching in LVd samples. For clay soil, regardless of the water layer applied, herbicide movement was limited to the superficial soil layer. In degradation studies, biomass accumulation of bioindicator Brachiaria decumbens was higher in LRd samples with no restriction. LVd soil samples treated with any microbial activity restriction methods and exposed to light led to bioindicator biomass reduction, in comparison to others treatments. For both soils, biomass of B. decumbens was increased in soil samples that remained exposed to light. |
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Leaching potential and degradation of diuron in two soils of contrasting texture - DOI: 10.4025/actasciagron.v30i5.5963Lixiviação e degradação de diuron em dois solos de textura contrastante - DOI: 10.4025/actasciagron.v30i5.5963residual effectmobilitypersistenceretention.efeito residualmobilidadepersistênciaretençãoThis research was aimed at studying the leaching of diuron in soil columns, as well as the effect of different methods of reduction of microbial activity on diuron degradation in samples of a sandy loam soil (LVd) and a clay soil (LRd). To measure the downward movement of diuron (0; 1.6 and 3.2 kg ha-1), water layers of 0, 20 40, 60 and 80 mm were applied. For degradation studies, the methods used to restrict were as follow: sterilized in autoclave, methyl bromide application, amoxicillin, captan and amoxicilin+captan; soil samples were kept with or without light incidence. Water depths > 60 mm were enough to promote observable leaching in LVd samples. For clay soil, regardless of the water layer applied, herbicide movement was limited to the superficial soil layer. In degradation studies, biomass accumulation of bioindicator Brachiaria decumbens was higher in LRd samples with no restriction. LVd soil samples treated with any microbial activity restriction methods and exposed to light led to bioindicator biomass reduction, in comparison to others treatments. For both soils, biomass of B. decumbens was increased in soil samples that remained exposed to light.Objetivou-se estudar a lixiviação do diuron em colunas de solo, além do efeito de métodos de redução da atividade microbiana na degradação deste herbicida em amostras de LATOSSOLO VERMELHO Distrófico (LVd – textura franco-arenosa) e LATOSSOLO VERMELHO Distroférrico (LRd – textura argilosa). Para avaliar a movimentação do diuron (0; 1,6 e 3,2 kg há-1), foram aplicadas lâminas de 0, 20, 40, 60 e 80 mm de água. Na degradação, os métodos de restrição empregados foram: autoclavagem prévia, aplicação de brometo de metila, amoxicilina, captan e amoxicilina+captan, sendo que as amostras foram mantidas na ausência ou presença de luz. Resultados indicam que lâminas superiores a 60 mm foram suficientes para promover movimentação nítida nas amostras de LVd. Para o LRd, independente da lâmina aplicada, a movimentação do herbicida ficou restrita à camada superficial. Nos ensaios de degradação, para o LRd, verificou-se que o acúmulo de biomassa do bioindicador Brachiaria decumbens foi maior nas amostras de solo que não receberam nenhum método de restrição. Amostras de LVd que receberam qualquer um dos métodos de restrição e foram mantidas na luz proporcionaram menor produção de biomassa, em comparação aos demais tratamentos. Evidenciou-se, ainda, que, independente do solo, o acúmulo de biomassa de B. decumbens foi maior nas amostras que permaneceram na luz.Universidade Estadual de Maringá2008-12-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/596310.4025/actasciagron.v30i5.5963Acta Scientiarum. Agronomy; Vol 30 No 5 (2008): Special suplemment; 631-638Acta Scientiarum. Agronomy; v. 30 n. 5 (2008): Suplemento Especial; 631-6381807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5963/5963Inoue, Miriam HirokoOliveira Júnior, Rubem Silverio deConstantin, JamilAlonso, Diego GonçalvesSantana, Diogo Carneiro deinfo:eu-repo/semantics/openAccess2022-11-23T18:38:14Zoai:periodicos.uem.br/ojs:article/5963Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgronPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/oaiactaagron@uem.br||actaagron@uem.br|| edamasio@uem.br1807-86211679-9275opendoar:2022-11-23T18:38:14Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Leaching potential and degradation of diuron in two soils of contrasting texture - DOI: 10.4025/actasciagron.v30i5.5963 Lixiviação e degradação de diuron em dois solos de textura contrastante - DOI: 10.4025/actasciagron.v30i5.5963 |
title |
Leaching potential and degradation of diuron in two soils of contrasting texture - DOI: 10.4025/actasciagron.v30i5.5963 |
spellingShingle |
Leaching potential and degradation of diuron in two soils of contrasting texture - DOI: 10.4025/actasciagron.v30i5.5963 Inoue, Miriam Hiroko residual effect mobility persistence retention. efeito residual mobilidade persistência retenção |
title_short |
Leaching potential and degradation of diuron in two soils of contrasting texture - DOI: 10.4025/actasciagron.v30i5.5963 |
title_full |
Leaching potential and degradation of diuron in two soils of contrasting texture - DOI: 10.4025/actasciagron.v30i5.5963 |
title_fullStr |
Leaching potential and degradation of diuron in two soils of contrasting texture - DOI: 10.4025/actasciagron.v30i5.5963 |
title_full_unstemmed |
Leaching potential and degradation of diuron in two soils of contrasting texture - DOI: 10.4025/actasciagron.v30i5.5963 |
title_sort |
Leaching potential and degradation of diuron in two soils of contrasting texture - DOI: 10.4025/actasciagron.v30i5.5963 |
author |
Inoue, Miriam Hiroko |
author_facet |
Inoue, Miriam Hiroko Oliveira Júnior, Rubem Silverio de Constantin, Jamil Alonso, Diego Gonçalves Santana, Diogo Carneiro de |
author_role |
author |
author2 |
Oliveira Júnior, Rubem Silverio de Constantin, Jamil Alonso, Diego Gonçalves Santana, Diogo Carneiro de |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Inoue, Miriam Hiroko Oliveira Júnior, Rubem Silverio de Constantin, Jamil Alonso, Diego Gonçalves Santana, Diogo Carneiro de |
dc.subject.por.fl_str_mv |
residual effect mobility persistence retention. efeito residual mobilidade persistência retenção |
topic |
residual effect mobility persistence retention. efeito residual mobilidade persistência retenção |
description |
This research was aimed at studying the leaching of diuron in soil columns, as well as the effect of different methods of reduction of microbial activity on diuron degradation in samples of a sandy loam soil (LVd) and a clay soil (LRd). To measure the downward movement of diuron (0; 1.6 and 3.2 kg ha-1), water layers of 0, 20 40, 60 and 80 mm were applied. For degradation studies, the methods used to restrict were as follow: sterilized in autoclave, methyl bromide application, amoxicillin, captan and amoxicilin+captan; soil samples were kept with or without light incidence. Water depths > 60 mm were enough to promote observable leaching in LVd samples. For clay soil, regardless of the water layer applied, herbicide movement was limited to the superficial soil layer. In degradation studies, biomass accumulation of bioindicator Brachiaria decumbens was higher in LRd samples with no restriction. LVd soil samples treated with any microbial activity restriction methods and exposed to light led to bioindicator biomass reduction, in comparison to others treatments. For both soils, biomass of B. decumbens was increased in soil samples that remained exposed to light. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-12-10 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5963 10.4025/actasciagron.v30i5.5963 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5963 |
identifier_str_mv |
10.4025/actasciagron.v30i5.5963 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5963/5963 |
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 |
Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Agronomy; Vol 30 No 5 (2008): Special suplemment; 631-638 Acta Scientiarum. Agronomy; v. 30 n. 5 (2008): Suplemento Especial; 631-638 1807-8621 1679-9275 reponame:Acta Scientiarum. Agronomy (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Agronomy (Online) |
collection |
Acta Scientiarum. Agronomy (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaagron@uem.br||actaagron@uem.br|| edamasio@uem.br |
_version_ |
1799305907162578944 |