Herbicide activity al diphenylether compounds applied in post-emergence to soybeans.
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/15781 |
Resumo: | A field experiment was conducted during 1985/66 in the "Estação Experimental Agronômica of Universidade Federal do Rio Grande do Sul", in Guaíba, RS, Brazil, in order to evaluate the efficiency and selectivity of acifluorten, fluoroglicoten, tomesafen, and lactofen, applied at three rates and two post-emergence limes on broadleaf weed control in soybeans, and to establish the weed competition effect Application at seven days after soybeans emergence allowed high efficiency for all herbicides, even at the lowest rates, whereas application at 21 days decreased the efficiency, mainly in the lowest and the highest rates. Lactofen was the least affected by weed growth stage, promoting, in the 21 days after application, the best performance. Amaranth (Amaranthus blitum L.) was the most tolerant species to this application, followed by Brazil pusley (Richardia brasiliensis Gomez) and purslane (Portulaca oleracea L.). Dry matter evaluation of soybean seedling, sampled at seven days after applications, did not show quantitative damage by the herbicides, although visual symptoms of injury few days after applications were observed. The dicotyledonous weeds showed little competition ability, as have decreased soybean yield by an average of 12,5%. |
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Herbicide activity al diphenylether compounds applied in post-emergence to soybeans.Atividade herbicida de compostos difeniléteres aplicados em pós-emergência à cultura da sojaAmaranthus blitum Portulaca oleracea, Richardia brasiliensis, Glycine max, acifluorfen, fluoroglicofen, fomesafen, lactofen, amaranth, Brazil pusley, purslaneAmaranthus blitum; Portulaca oleracea; Richardia brasiliensis; Glycine max; acifluorfen; fluoroglicofen; fomesafen; lactofen; caruru; beldroega; poaia-brancaA field experiment was conducted during 1985/66 in the "Estação Experimental Agronômica of Universidade Federal do Rio Grande do Sul", in Guaíba, RS, Brazil, in order to evaluate the efficiency and selectivity of acifluorten, fluoroglicoten, tomesafen, and lactofen, applied at three rates and two post-emergence limes on broadleaf weed control in soybeans, and to establish the weed competition effect Application at seven days after soybeans emergence allowed high efficiency for all herbicides, even at the lowest rates, whereas application at 21 days decreased the efficiency, mainly in the lowest and the highest rates. Lactofen was the least affected by weed growth stage, promoting, in the 21 days after application, the best performance. Amaranth (Amaranthus blitum L.) was the most tolerant species to this application, followed by Brazil pusley (Richardia brasiliensis Gomez) and purslane (Portulaca oleracea L.). Dry matter evaluation of soybean seedling, sampled at seven days after applications, did not show quantitative damage by the herbicides, although visual symptoms of injury few days after applications were observed. The dicotyledonous weeds showed little competition ability, as have decreased soybean yield by an average of 12,5%.Um experimento de campo foi conduzido em 1985/86 na Estação Experimental Agronômica da Universidade Federal do Rio Grande do Sul, em Guaíba, RS, objetivando avaliar a eficiência e a seletividade dos herbicidas acifluorfen, fluoroglicofen, fomesafen e lactofen, aplicados em três doses e duas épocas de pós-emergência, para controle de plantas daninhas dicotiledôneas, na soja, e determinar o efeito competitivo das espécies desta classe com a cultura. Aplicação aos sete dias após a emergência da soja permitiu elevada eficiência dos quatro herbicidas, mesmo nas menores doses, enquanto a aplicação aos 21 dias reduziu a eficiência, principalmente nas doses inferior e superior. Lactofen foi o herbicida cuja eficiência foi menos afetada pelo estádio de crescimento das plantas daninhas, promovendo, na aplicação aos 21 dias, o melhor desempenho entre os produtos testados. O caruru (Amaranthus blitum L.) foi a espécie mais tolerante a esta aplicação, seguindo-se a poaia-branca (Richardia brasiliensis Gomez) e a beldroega (Portulaca oleracea L.). O peso seco das plantas inteiras de soja, amostradas aos sete dias após as aplicações, não mostrou variações quantitativas causados pelos herbicidas, apesar de terem sido observados sintomas visuais de dano nos dias seguintes às aplicações. As plantas daninhas dicotiledôneas mostraram-se pouco competitivas, causando decréscimo médio de 12,5% no rendimento de grãos de soja.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraMengarda, Ildo PedroFleck, Nilson Gilberto2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/15781Pesquisa Agropecuaria Brasileira; v.24, n.5, maio 1989; 531-541Pesquisa Agropecuária Brasileira; v.24, n.5, maio 1989; 531-5411678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/15781/9829info:eu-repo/semantics/openAccess2014-08-26T17:35:39Zoai:ojs.seer.sct.embrapa.br:article/15781Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-26T17:35:39Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Herbicide activity al diphenylether compounds applied in post-emergence to soybeans. Atividade herbicida de compostos difeniléteres aplicados em pós-emergência à cultura da soja |
title |
Herbicide activity al diphenylether compounds applied in post-emergence to soybeans. |
spellingShingle |
Herbicide activity al diphenylether compounds applied in post-emergence to soybeans. Mengarda, Ildo Pedro Amaranthus blitum Portulaca oleracea, Richardia brasiliensis, Glycine max, acifluorfen, fluoroglicofen, fomesafen, lactofen, amaranth, Brazil pusley, purslane Amaranthus blitum; Portulaca oleracea; Richardia brasiliensis; Glycine max; acifluorfen; fluoroglicofen; fomesafen; lactofen; caruru; beldroega; poaia-branca |
title_short |
Herbicide activity al diphenylether compounds applied in post-emergence to soybeans. |
title_full |
Herbicide activity al diphenylether compounds applied in post-emergence to soybeans. |
title_fullStr |
Herbicide activity al diphenylether compounds applied in post-emergence to soybeans. |
title_full_unstemmed |
Herbicide activity al diphenylether compounds applied in post-emergence to soybeans. |
title_sort |
Herbicide activity al diphenylether compounds applied in post-emergence to soybeans. |
author |
Mengarda, Ildo Pedro |
author_facet |
Mengarda, Ildo Pedro Fleck, Nilson Gilberto |
author_role |
author |
author2 |
Fleck, Nilson Gilberto |
author2_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Mengarda, Ildo Pedro Fleck, Nilson Gilberto |
dc.subject.por.fl_str_mv |
Amaranthus blitum Portulaca oleracea, Richardia brasiliensis, Glycine max, acifluorfen, fluoroglicofen, fomesafen, lactofen, amaranth, Brazil pusley, purslane Amaranthus blitum; Portulaca oleracea; Richardia brasiliensis; Glycine max; acifluorfen; fluoroglicofen; fomesafen; lactofen; caruru; beldroega; poaia-branca |
topic |
Amaranthus blitum Portulaca oleracea, Richardia brasiliensis, Glycine max, acifluorfen, fluoroglicofen, fomesafen, lactofen, amaranth, Brazil pusley, purslane Amaranthus blitum; Portulaca oleracea; Richardia brasiliensis; Glycine max; acifluorfen; fluoroglicofen; fomesafen; lactofen; caruru; beldroega; poaia-branca |
description |
A field experiment was conducted during 1985/66 in the "Estação Experimental Agronômica of Universidade Federal do Rio Grande do Sul", in Guaíba, RS, Brazil, in order to evaluate the efficiency and selectivity of acifluorten, fluoroglicoten, tomesafen, and lactofen, applied at three rates and two post-emergence limes on broadleaf weed control in soybeans, and to establish the weed competition effect Application at seven days after soybeans emergence allowed high efficiency for all herbicides, even at the lowest rates, whereas application at 21 days decreased the efficiency, mainly in the lowest and the highest rates. Lactofen was the least affected by weed growth stage, promoting, in the 21 days after application, the best performance. Amaranth (Amaranthus blitum L.) was the most tolerant species to this application, followed by Brazil pusley (Richardia brasiliensis Gomez) and purslane (Portulaca oleracea L.). Dry matter evaluation of soybean seedling, sampled at seven days after applications, did not show quantitative damage by the herbicides, although visual symptoms of injury few days after applications were observed. The dicotyledonous weeds showed little competition ability, as have decreased soybean yield by an average of 12,5%. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-17 |
dc.type.none.fl_str_mv |
|
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 |
https://seer.sct.embrapa.br/index.php/pab/article/view/15781 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/15781 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/15781/9829 |
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 |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.24, n.5, maio 1989; 531-541 Pesquisa Agropecuária Brasileira; v.24, n.5, maio 1989; 531-541 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416676197269504 |