Weed management in off-season corn cropped alone or intercropped with Congo signal grass
Autor(a) principal: | |
---|---|
Data de Publicação: | 2012 |
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/9083 |
Resumo: | The objective of this work was to evaluate the efficiency of post‑emergence herbicides for weed control, and its selectivity to Congo signal grass (Urochloa ruziziensis) and to off-season corn cropped alone or intercropped. The trial was carried out in randomized blocks with four replicates in a 2x14 factorial design: off-season corn intercropped or not to U. ruziziensis, and 14 different treatments with herbicides, besides two tests with or without weed control. Weed control, herbicide phytotoxicity to U. ruziziensis, and corn yield were evaluated. All herbicide treatments provided weed control over 80% at 14 days after the application. The treatments with atrazine+oil, at 800 and 1,200 g ha-1, formed the most selective group to U. ruziziensis; the group with the lowest selectivity consisted of the application of tembotrione alone and in associations with atrazine. The competition between U. ruziziensis and corn reduced corn yield up to 45.3%. However, there were no differences between treatments in the plots treated with herbicides. |
id |
EMBRAPA-4_8bd024d282bef8f3bd7d939e831b1b61 |
---|---|
oai_identifier_str |
oai:ojs.seer.sct.embrapa.br:article/9083 |
network_acronym_str |
EMBRAPA-4 |
network_name_str |
Pesquisa Agropecuária Brasileira (Online) |
repository_id_str |
|
spelling |
Weed management in off-season corn cropped alone or intercropped with Congo signal grassManejo de plantas daninhas em milho safrinha em cultivo solteiro ou consorciado à braquiária ruziziensisBrachiaria; Urochloa ruziziensis; intercropping; phytotoxicity; herbicidesBrachiaria; Urochloa ruziziensis; consorciação; fitotoxicidade; herbicidasThe objective of this work was to evaluate the efficiency of post‑emergence herbicides for weed control, and its selectivity to Congo signal grass (Urochloa ruziziensis) and to off-season corn cropped alone or intercropped. The trial was carried out in randomized blocks with four replicates in a 2x14 factorial design: off-season corn intercropped or not to U. ruziziensis, and 14 different treatments with herbicides, besides two tests with or without weed control. Weed control, herbicide phytotoxicity to U. ruziziensis, and corn yield were evaluated. All herbicide treatments provided weed control over 80% at 14 days after the application. The treatments with atrazine+oil, at 800 and 1,200 g ha-1, formed the most selective group to U. ruziziensis; the group with the lowest selectivity consisted of the application of tembotrione alone and in associations with atrazine. The competition between U. ruziziensis and corn reduced corn yield up to 45.3%. However, there were no differences between treatments in the plots treated with herbicides.O objetivo deste trabalho foi avaliar a eficiência de herbicidas pós‑emergentes no controle das plantas daninhas, e sua seletividade à braquiária (Urochloa ruziziensis) e ao milho safrinha, em cultivo solteiro ou consorciado. O experimento foi conduzido em delineamento de blocos ao acaso, com quatro repetições, em esquema fatorial 2x14: cultivo do milho consorciado ou não à braquiária e 14 tratamentos químicos, além de duas testemunhas, com ou sem controle das plantas daninhas. Avaliou-se o controle das plantas daninhas, a fitotoxicidade para braquiária e a produtividade do milho. Todos os tratamentos com herbicidas proporcionaram controle acima de 80% das plantas daninhas aos 14 dias após a aplicação. As misturas formuladas de atrazina+óleo, a 800 e a 1.200 g ha-1, compuseram o grupo de herbicidas mais seletivos a U. ruziziensis; o grupo de menor seletividade consistiu da aplicação isolada de tembotrione ou de suas associações com atrazina. A competição com a braquiária reduziu a produtividade do milho em até 45,3%. Contudo, não houve diferença entre os tratamentos nas parcelas tratadas com herbicidas.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraAdegas, Fernando StornioloVoll, ElemarGazziero, Dionísio Luiz Pisa2012-01-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/9083Pesquisa Agropecuaria Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1226-1233Pesquisa Agropecuária Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1226-12331678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/9083/6647info:eu-repo/semantics/openAccess2014-06-18T16:16:20Zoai:ojs.seer.sct.embrapa.br:article/9083Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-06-18T16:16:20Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Weed management in off-season corn cropped alone or intercropped with Congo signal grass Manejo de plantas daninhas em milho safrinha em cultivo solteiro ou consorciado à braquiária ruziziensis |
title |
Weed management in off-season corn cropped alone or intercropped with Congo signal grass |
spellingShingle |
Weed management in off-season corn cropped alone or intercropped with Congo signal grass Adegas, Fernando Storniolo Brachiaria; Urochloa ruziziensis; intercropping; phytotoxicity; herbicides Brachiaria; Urochloa ruziziensis; consorciação; fitotoxicidade; herbicidas |
title_short |
Weed management in off-season corn cropped alone or intercropped with Congo signal grass |
title_full |
Weed management in off-season corn cropped alone or intercropped with Congo signal grass |
title_fullStr |
Weed management in off-season corn cropped alone or intercropped with Congo signal grass |
title_full_unstemmed |
Weed management in off-season corn cropped alone or intercropped with Congo signal grass |
title_sort |
Weed management in off-season corn cropped alone or intercropped with Congo signal grass |
author |
Adegas, Fernando Storniolo |
author_facet |
Adegas, Fernando Storniolo Voll, Elemar Gazziero, Dionísio Luiz Pisa |
author_role |
author |
author2 |
Voll, Elemar Gazziero, Dionísio Luiz Pisa |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Adegas, Fernando Storniolo Voll, Elemar Gazziero, Dionísio Luiz Pisa |
dc.subject.por.fl_str_mv |
Brachiaria; Urochloa ruziziensis; intercropping; phytotoxicity; herbicides Brachiaria; Urochloa ruziziensis; consorciação; fitotoxicidade; herbicidas |
topic |
Brachiaria; Urochloa ruziziensis; intercropping; phytotoxicity; herbicides Brachiaria; Urochloa ruziziensis; consorciação; fitotoxicidade; herbicidas |
description |
The objective of this work was to evaluate the efficiency of post‑emergence herbicides for weed control, and its selectivity to Congo signal grass (Urochloa ruziziensis) and to off-season corn cropped alone or intercropped. The trial was carried out in randomized blocks with four replicates in a 2x14 factorial design: off-season corn intercropped or not to U. ruziziensis, and 14 different treatments with herbicides, besides two tests with or without weed control. Weed control, herbicide phytotoxicity to U. ruziziensis, and corn yield were evaluated. All herbicide treatments provided weed control over 80% at 14 days after the application. The treatments with atrazine+oil, at 800 and 1,200 g ha-1, formed the most selective group to U. ruziziensis; the group with the lowest selectivity consisted of the application of tembotrione alone and in associations with atrazine. The competition between U. ruziziensis and corn reduced corn yield up to 45.3%. However, there were no differences between treatments in the plots treated with herbicides. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-02 |
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/9083 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/9083 |
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/9083/6647 |
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.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1226-1233 Pesquisa Agropecuária Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1226-1233 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 |
_version_ |
1793416688342925312 |