Resistence of Euphorbia Heterophylla L. to ALS-inhibiting herbicides in soybean
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Scientia Agrícola (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000500007 |
Resumo: | Herbicides are widely used in soybean for weed control, and the selection pressure attributed to the repeated use of herbicides with similar modes of action on the same site has caused selection for resistant biotypes within and among previously susceptible species, such as Euphorbia heterophylla L., in relation to ALS enzyme inhibitors, in the states of Paraná, Rio Grande do Sul, and São Paulo, Brazil. Seeds of E. heterophylla were collected to examine possible new cases of resistant populations and to test alternative herbicide treatments to manage these populations, in the Caarapó region, State of Mato Grosso do Sul, Brazil, in areas where plants of this species have survived continuous herbicide applications. The experiment was carried out under greenhouse conditions, where biotypes with a history of suspected resistance were compared with a known susceptible biotype. Several post-emergence herbicides were sprayed at zero, one, two, four, and eight times the recommended field application rates. Twenty days after application, plants were harvested, and control percentage and fresh weight were determined to establish dose-response curves, in the aim to obtain the resistance factor using CD50 and RD50 data. The chlorimuron-ethyl resistance factor values for the control percentage and fresh weight parameters were higher than 16.5 and 16.9, respectively, while imazethapyr showed resistance factors higher than 25.0 and 23.5, respectively. The resistant biotype showed different resistance levels to chlorimuron-ethyl and imazethapyr, showing cross-resistance to the sulfonylurea and imidazolinone groups. Nevertheless, this biotype was effectively controlled by fomesafen (250 g ha-1), lactofen (120 g ha-1), flumiclorac-pentyl (40 g ha-1), glufosinate-ammonium (150 g ha-1), and glyphosate (360 g ha-1). |
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Resistence of Euphorbia Heterophylla L. to ALS-inhibiting herbicides in soybeanmilkweedcross-resistanceimidazolinonesulfonylureaHerbicides are widely used in soybean for weed control, and the selection pressure attributed to the repeated use of herbicides with similar modes of action on the same site has caused selection for resistant biotypes within and among previously susceptible species, such as Euphorbia heterophylla L., in relation to ALS enzyme inhibitors, in the states of Paraná, Rio Grande do Sul, and São Paulo, Brazil. Seeds of E. heterophylla were collected to examine possible new cases of resistant populations and to test alternative herbicide treatments to manage these populations, in the Caarapó region, State of Mato Grosso do Sul, Brazil, in areas where plants of this species have survived continuous herbicide applications. The experiment was carried out under greenhouse conditions, where biotypes with a history of suspected resistance were compared with a known susceptible biotype. Several post-emergence herbicides were sprayed at zero, one, two, four, and eight times the recommended field application rates. Twenty days after application, plants were harvested, and control percentage and fresh weight were determined to establish dose-response curves, in the aim to obtain the resistance factor using CD50 and RD50 data. The chlorimuron-ethyl resistance factor values for the control percentage and fresh weight parameters were higher than 16.5 and 16.9, respectively, while imazethapyr showed resistance factors higher than 25.0 and 23.5, respectively. The resistant biotype showed different resistance levels to chlorimuron-ethyl and imazethapyr, showing cross-resistance to the sulfonylurea and imidazolinone groups. Nevertheless, this biotype was effectively controlled by fomesafen (250 g ha-1), lactofen (120 g ha-1), flumiclorac-pentyl (40 g ha-1), glufosinate-ammonium (150 g ha-1), and glyphosate (360 g ha-1).Escola Superior de Agricultura "Luiz de Queiroz"2005-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000500007Scientia Agricola v.62 n.5 2005reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162005000500007info:eu-repo/semantics/openAccessGelmini,Gerson AugustoVictória Filho,RicardoNovo,Maria do Carmo de Salvo SoaresAdoryan,Márcio Luizeng2005-09-26T00:00:00Zoai:scielo:S0103-90162005000500007Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2005-09-26T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Resistence of Euphorbia Heterophylla L. to ALS-inhibiting herbicides in soybean |
title |
Resistence of Euphorbia Heterophylla L. to ALS-inhibiting herbicides in soybean |
spellingShingle |
Resistence of Euphorbia Heterophylla L. to ALS-inhibiting herbicides in soybean Gelmini,Gerson Augusto milkweed cross-resistance imidazolinone sulfonylurea |
title_short |
Resistence of Euphorbia Heterophylla L. to ALS-inhibiting herbicides in soybean |
title_full |
Resistence of Euphorbia Heterophylla L. to ALS-inhibiting herbicides in soybean |
title_fullStr |
Resistence of Euphorbia Heterophylla L. to ALS-inhibiting herbicides in soybean |
title_full_unstemmed |
Resistence of Euphorbia Heterophylla L. to ALS-inhibiting herbicides in soybean |
title_sort |
Resistence of Euphorbia Heterophylla L. to ALS-inhibiting herbicides in soybean |
author |
Gelmini,Gerson Augusto |
author_facet |
Gelmini,Gerson Augusto Victória Filho,Ricardo Novo,Maria do Carmo de Salvo Soares Adoryan,Márcio Luiz |
author_role |
author |
author2 |
Victória Filho,Ricardo Novo,Maria do Carmo de Salvo Soares Adoryan,Márcio Luiz |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Gelmini,Gerson Augusto Victória Filho,Ricardo Novo,Maria do Carmo de Salvo Soares Adoryan,Márcio Luiz |
dc.subject.por.fl_str_mv |
milkweed cross-resistance imidazolinone sulfonylurea |
topic |
milkweed cross-resistance imidazolinone sulfonylurea |
description |
Herbicides are widely used in soybean for weed control, and the selection pressure attributed to the repeated use of herbicides with similar modes of action on the same site has caused selection for resistant biotypes within and among previously susceptible species, such as Euphorbia heterophylla L., in relation to ALS enzyme inhibitors, in the states of Paraná, Rio Grande do Sul, and São Paulo, Brazil. Seeds of E. heterophylla were collected to examine possible new cases of resistant populations and to test alternative herbicide treatments to manage these populations, in the Caarapó region, State of Mato Grosso do Sul, Brazil, in areas where plants of this species have survived continuous herbicide applications. The experiment was carried out under greenhouse conditions, where biotypes with a history of suspected resistance were compared with a known susceptible biotype. Several post-emergence herbicides were sprayed at zero, one, two, four, and eight times the recommended field application rates. Twenty days after application, plants were harvested, and control percentage and fresh weight were determined to establish dose-response curves, in the aim to obtain the resistance factor using CD50 and RD50 data. The chlorimuron-ethyl resistance factor values for the control percentage and fresh weight parameters were higher than 16.5 and 16.9, respectively, while imazethapyr showed resistance factors higher than 25.0 and 23.5, respectively. The resistant biotype showed different resistance levels to chlorimuron-ethyl and imazethapyr, showing cross-resistance to the sulfonylurea and imidazolinone groups. Nevertheless, this biotype was effectively controlled by fomesafen (250 g ha-1), lactofen (120 g ha-1), flumiclorac-pentyl (40 g ha-1), glufosinate-ammonium (150 g ha-1), and glyphosate (360 g ha-1). |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000500007 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000500007 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-90162005000500007 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
publisher.none.fl_str_mv |
Escola Superior de Agricultura "Luiz de Queiroz" |
dc.source.none.fl_str_mv |
Scientia Agricola v.62 n.5 2005 reponame:Scientia Agrícola (Online) instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Scientia Agrícola (Online) |
collection |
Scientia Agrícola (Online) |
repository.name.fl_str_mv |
Scientia Agrícola (Online) - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
scientia@usp.br||alleoni@usp.br |
_version_ |
1748936460030967808 |