Persistence of imidazolinones in soils under a clearfield system of rice cultivation

The commercial mixture of imazethapyr and imazapic herbicides has been used for the control of red rice and several other species of weeds found in rice crops; this system called Clearfield. However, its use may limit the succession of non-tolerant crops for long residual activity. The research obje...

ver descrição completa

Detalhes bibliográficos
Autores: Souza, M.F., C. Neto, M.D., Marinho, M.I., Saraiva, D.T., Faria, A.T., Silva, A.A., Silva, D.V.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:Brasil
Recursos:Universidade Federal de Viçosa (UFV)
Repositorio:LOCUS Repositório Institucional da UFV
Idioma:inglés
OAI Identifier:oai:locus.ufv.br:123456789/13936
Acesso em linha:http://dx.doi.org/10.1590/s0100-83582016340300020
http://www.locus.ufv.br/handle/123456789/13936
Access Level:acceso abierto
Palavra-chave:Carryover
Imazapic
Imazethapyr
Only(r)
id BR_cbede371eb01563eabc109dab5e7380e
oai_identifier_str oai:locus.ufv.br:123456789/13936
network_acronym_str BR
network_name_str Brasil
repository_id_str
spelling Persistence of imidazolinones in soils under a clearfield system of rice cultivationCarryoverImazapicImazethapyrOnly(r)The commercial mixture of imazethapyr and imazapic herbicides has been used for the control of red rice and several other species of weeds found in rice crops; this system called Clearfield. However, its use may limit the succession of non-tolerant crops for long residual activity. The research objective with this work was to determine the persistence of imazethapyr, imazapic and their mixture in three soils in the Brazilian state of Tocantins. Three experiments were conducted in a completely randomized design with four replications, each corresponding to the evaluated soil (Haplic Plinthosol (FX), red-yellow Latosol (LVA) and Haplic Gleysol (GX)). The treatments were arranged in a split plot design, with the allocated plots herbicides (imazethapyr and imazapic alone and commercial mixture) and the plots allocated the 11 evaluation times (1, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150 days after treatment (DAT)), and a control without application. Contacted up long residual effect of imazethapyr and commercial mixture of imazethapyr and imazapic, regardless of assessed soil. After 150 days of applying herbicides or the commercial mixture, their residues in the soil also inhibited approximately 94% of the mass of the dry matter accumulation of the indicator plants. When imazapic was applied alone, there was a higher dry matter accumulation of the indicator plants, indicating less residual effect of this herbicide in the soil and this was attributed to the lower dose of this herbicide applied. The attributes of the soil pH, texture and iron oxides were what most affected the persistence of the herbicides. It can be concluded that the persistence of imazethapyr and imazapic is too long in the Brazilian state of Tocantins soils and the use of these herbicides in the region should be avoided due to the high risk of the occurrence of carryover,or be well planned, as land use in rotation for susceptible crops.O sistema de cultivo Clearfield(r) utiliza os herbicidas imazethapyr e imazapic no controle de plantas daninhas. Um dos principais problemas relacionados ao uso desse sistema é a restrição ao cultivo de outras culturas, causada pelo efeito residual dos herbicidas. Três experimentos foram realizados para avaliar a persistência do imazethapyr e imazapic em solos utilizados no sistema Clearfield(r). Cada experimento correspondeu a um solo avaliado: Plintossolo Háplico, Latossolo Vermelho-Amarelo ou Gleissolo Háplico. O imazethapyr e o imazapic isolados e em mistura comercial foram aplicados no solo, e seu residual foi avaliado em 11 épocas (1, 15, 30, 45, 60, 75, 90, 105, 120, 135 e 150 dias após o tratamento). A planta indicadora utilizada foi o sorgo (Sorghum vulgare). O imazethapyr e sua mistura com o imazapic causaram reduções da matéria seca das plantas indicadoras superiores a 94%, mesmo após 150 dias da aplicação, independentemente do solo avaliado. O imazapic causou menor inibição do crescimento do sorgo, indicando menor efeito residual desse herbicida nos solos. A mistura comercial teve maior persistência, comparada à aplicação isolada dos herbicidas. Independentemente do tipo de solo, a persistência do imazethapyr foi maior que a do imazapic.Planta Daninha2017-11-29T12:11:46Z2017-11-29T12:11:46Z2016-01-12info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlepdfapplication/pdf1806-9681http://dx.doi.org/10.1590/s0100-83582016340300020http://www.locus.ufv.br/handle/123456789/13936engv. 34, n. 3, p. 589-596, July./Sept. 2016info:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVSouza, M.F.C. Neto, M.D.Marinho, M.I.Saraiva, D.T.Faria, A.T.Silva, A.A.Silva, D.V.2024-07-12T07:23:51Zoai:locus.ufv.br:123456789/13936Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452024-07-12T07:23:51LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.none.fl_str_mv Persistence of imidazolinones in soils under a clearfield system of rice cultivation
title Persistence of imidazolinones in soils under a clearfield system of rice cultivation
spellingShingle Persistence of imidazolinones in soils under a clearfield system of rice cultivation
Souza, M.F.
Carryover
Imazapic
Imazethapyr
Only(r)
title_short Persistence of imidazolinones in soils under a clearfield system of rice cultivation
title_full Persistence of imidazolinones in soils under a clearfield system of rice cultivation
title_fullStr Persistence of imidazolinones in soils under a clearfield system of rice cultivation
title_full_unstemmed Persistence of imidazolinones in soils under a clearfield system of rice cultivation
title_sort Persistence of imidazolinones in soils under a clearfield system of rice cultivation
dc.creator.none.fl_str_mv Souza, M.F.
C. Neto, M.D.
Marinho, M.I.
Saraiva, D.T.
Faria, A.T.
Silva, A.A.
Silva, D.V.
author Souza, M.F.
author_facet Souza, M.F.
C. Neto, M.D.
Marinho, M.I.
Saraiva, D.T.
Faria, A.T.
Silva, A.A.
Silva, D.V.
author_role author
author2 C. Neto, M.D.
Marinho, M.I.
Saraiva, D.T.
Faria, A.T.
Silva, A.A.
Silva, D.V.
author2_role author
author
author
author
author
author
dc.subject.por.fl_str_mv Carryover
Imazapic
Imazethapyr
Only(r)
topic Carryover
Imazapic
Imazethapyr
Only(r)
description The commercial mixture of imazethapyr and imazapic herbicides has been used for the control of red rice and several other species of weeds found in rice crops; this system called Clearfield. However, its use may limit the succession of non-tolerant crops for long residual activity. The research objective with this work was to determine the persistence of imazethapyr, imazapic and their mixture in three soils in the Brazilian state of Tocantins. Three experiments were conducted in a completely randomized design with four replications, each corresponding to the evaluated soil (Haplic Plinthosol (FX), red-yellow Latosol (LVA) and Haplic Gleysol (GX)). The treatments were arranged in a split plot design, with the allocated plots herbicides (imazethapyr and imazapic alone and commercial mixture) and the plots allocated the 11 evaluation times (1, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150 days after treatment (DAT)), and a control without application. Contacted up long residual effect of imazethapyr and commercial mixture of imazethapyr and imazapic, regardless of assessed soil. After 150 days of applying herbicides or the commercial mixture, their residues in the soil also inhibited approximately 94% of the mass of the dry matter accumulation of the indicator plants. When imazapic was applied alone, there was a higher dry matter accumulation of the indicator plants, indicating less residual effect of this herbicide in the soil and this was attributed to the lower dose of this herbicide applied. The attributes of the soil pH, texture and iron oxides were what most affected the persistence of the herbicides. It can be concluded that the persistence of imazethapyr and imazapic is too long in the Brazilian state of Tocantins soils and the use of these herbicides in the region should be avoided due to the high risk of the occurrence of carryover,or be well planned, as land use in rotation for susceptible crops.
publishDate 2016
dc.date.none.fl_str_mv 2016-01-12
2017-11-29T12:11:46Z
2017-11-29T12:11:46Z
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 1806-9681
http://dx.doi.org/10.1590/s0100-83582016340300020
http://www.locus.ufv.br/handle/123456789/13936
identifier_str_mv 1806-9681
url http://dx.doi.org/10.1590/s0100-83582016340300020
http://www.locus.ufv.br/handle/123456789/13936
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv v. 34, n. 3, p. 589-596, July./Sept. 2016
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv pdf
application/pdf
dc.publisher.none.fl_str_mv Planta Daninha
publisher.none.fl_str_mv Planta Daninha
dc.source.none.fl_str_mv reponame:LOCUS Repositório Institucional da UFV
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str LOCUS Repositório Institucional da UFV
collection LOCUS Repositório Institucional da UFV
repository.name.fl_str_mv LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv fabiojreis@ufv.br
_version_ 1853667129417531392
score 15,198674

Registos relacionados