Selectivity and effectiveness of herbicides in the grain sorghum crop
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/39265 |
Resumo: | Over the years, cultivated areas of sorghum have expanded considerably in Brazil. Chemical weed control has become an obstacle due to the scarcity of herbicides registered for the crop. The aim of this study was to evaluate the efficiency of weed control and selectivity of herbicides applied in pre and post emergence in the crop. Two experiments were conducted. In one of them, the hybrid BRS 310 was used while DKB 550 was used in the other. The experiments were performed in the field in randomized block design, evaluating seven treatments with four replications. The used treatments were: 1. Hand weeding, 2. S-metolachlor (1,440 g a.i. ha-1), 3. S-metolachlor (1,440 g a.i. ha-1) + atrazine (2,000 g a.i. ha-1), 4. atrazine (2,000 g a.i. ha-1), 5. atrazine (3,000 g a.i. ha-1), 6. atrazine (2,000 g a.i. ha-1) + mineral oil (0.25%), and 7. atrazine (2,000 g a.i. ha-1) + mineral oil (0.5%). It was verified that post-emergence atrazine was efficient in the weed control and selective to the sorghum crop, not affecting productivity, except in mixture with mineral oil (0.5%). Smetolachlor cannot be recommended in pre-emergence for the tested cultivars because it is not selective, reducing plants and productivity |
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Selectivity and effectiveness of herbicides in the grain sorghum cropSeletividade e eficácia de herbicidas na cultura do sorgo graníferoSorghum bicolorPhytotoxicityChemical controlWeed managementFitotoxicidadeControle químicoManejo de plantas daninhasOver the years, cultivated areas of sorghum have expanded considerably in Brazil. Chemical weed control has become an obstacle due to the scarcity of herbicides registered for the crop. The aim of this study was to evaluate the efficiency of weed control and selectivity of herbicides applied in pre and post emergence in the crop. Two experiments were conducted. In one of them, the hybrid BRS 310 was used while DKB 550 was used in the other. The experiments were performed in the field in randomized block design, evaluating seven treatments with four replications. The used treatments were: 1. Hand weeding, 2. S-metolachlor (1,440 g a.i. ha-1), 3. S-metolachlor (1,440 g a.i. ha-1) + atrazine (2,000 g a.i. ha-1), 4. atrazine (2,000 g a.i. ha-1), 5. atrazine (3,000 g a.i. ha-1), 6. atrazine (2,000 g a.i. ha-1) + mineral oil (0.25%), and 7. atrazine (2,000 g a.i. ha-1) + mineral oil (0.5%). It was verified that post-emergence atrazine was efficient in the weed control and selective to the sorghum crop, not affecting productivity, except in mixture with mineral oil (0.5%). Smetolachlor cannot be recommended in pre-emergence for the tested cultivars because it is not selective, reducing plants and productivityComo o decorrer dos anos, as áreas cultivadas de sorgo no Brasil expandiram de forma considerável. O controle químico de plantas daninhas se tornou um entrave devido à escassez de herbicidas registrados para a cultura. Objetivou-se com este trabalho avaliar a eficiência no controle de plantas daninhas e seletividade de herbicidas aplicados em pré e pós-emergência na cultura. Foram conduzidos dois experimentos. Em um deles utilizou-se o híbrido BRS 310 e, no outro, DKB 550. Os experimentos foram realizados em campo, no delineamento em blocos casualizados, avaliando-se sete tratamentos com quatro repetições. Os tratamentos utilizados foram: 1. capina manual; 2. S-metolachlor (1.440 g i.a. ha1 ); 3. S-metolachlor (1.440 g i.a. ha-1) + atrazine (2.000 g i.a. ha-1); 4. atrazine (2.000 g i.a. ha-1); 5. atrazine (3.000 g i.a. ha-1); 6. atrazine (2.000 g i.a. ha-1) + óleo mineral (0,25%); e 7. atrazine (2.000 g i.a. ha-1) + óleo mineral (0,5%). Verificou-se que a atrazine em pós-emergência foi eficiente no controle de plantas daninhas e seletiva à cultura do sorgo, não afetando a produtividade, exceto em mistura com óleo mineral (0,5%), e que o S-metolachlor não pode ser recomendado em pré-emergência para os cultivares testados, pelo fato de não ser seletivo, promovendo a redução de plantas e produtividade.Sociedade Brasileira da Ciência das Plantas Daninhas2020-03-09T17:03:06Z2020-03-09T17:03:06Z2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfPIMENTEL, G. V. et al. Selectivity and effectiveness of herbicides in the grain sorghum crop. Planta Daninha, Viçosa, MG, v. 37, 2019.http://repositorio.ufla.br/jspui/handle/1/39265Planta Daninhareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessPimentel, G. V.Guimarães, D. F.Moreira, S. G.Ávila, M. O. T.Martins, I. A.Bruzi, A. T.eng2020-03-09T17:03:39Zoai:localhost:1/39265Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-03-09T17:03:39Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Selectivity and effectiveness of herbicides in the grain sorghum crop Seletividade e eficácia de herbicidas na cultura do sorgo granífero |
title |
Selectivity and effectiveness of herbicides in the grain sorghum crop |
spellingShingle |
Selectivity and effectiveness of herbicides in the grain sorghum crop Pimentel, G. V. Sorghum bicolor Phytotoxicity Chemical control Weed management Fitotoxicidade Controle químico Manejo de plantas daninhas |
title_short |
Selectivity and effectiveness of herbicides in the grain sorghum crop |
title_full |
Selectivity and effectiveness of herbicides in the grain sorghum crop |
title_fullStr |
Selectivity and effectiveness of herbicides in the grain sorghum crop |
title_full_unstemmed |
Selectivity and effectiveness of herbicides in the grain sorghum crop |
title_sort |
Selectivity and effectiveness of herbicides in the grain sorghum crop |
author |
Pimentel, G. V. |
author_facet |
Pimentel, G. V. Guimarães, D. F. Moreira, S. G. Ávila, M. O. T. Martins, I. A. Bruzi, A. T. |
author_role |
author |
author2 |
Guimarães, D. F. Moreira, S. G. Ávila, M. O. T. Martins, I. A. Bruzi, A. T. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Pimentel, G. V. Guimarães, D. F. Moreira, S. G. Ávila, M. O. T. Martins, I. A. Bruzi, A. T. |
dc.subject.por.fl_str_mv |
Sorghum bicolor Phytotoxicity Chemical control Weed management Fitotoxicidade Controle químico Manejo de plantas daninhas |
topic |
Sorghum bicolor Phytotoxicity Chemical control Weed management Fitotoxicidade Controle químico Manejo de plantas daninhas |
description |
Over the years, cultivated areas of sorghum have expanded considerably in Brazil. Chemical weed control has become an obstacle due to the scarcity of herbicides registered for the crop. The aim of this study was to evaluate the efficiency of weed control and selectivity of herbicides applied in pre and post emergence in the crop. Two experiments were conducted. In one of them, the hybrid BRS 310 was used while DKB 550 was used in the other. The experiments were performed in the field in randomized block design, evaluating seven treatments with four replications. The used treatments were: 1. Hand weeding, 2. S-metolachlor (1,440 g a.i. ha-1), 3. S-metolachlor (1,440 g a.i. ha-1) + atrazine (2,000 g a.i. ha-1), 4. atrazine (2,000 g a.i. ha-1), 5. atrazine (3,000 g a.i. ha-1), 6. atrazine (2,000 g a.i. ha-1) + mineral oil (0.25%), and 7. atrazine (2,000 g a.i. ha-1) + mineral oil (0.5%). It was verified that post-emergence atrazine was efficient in the weed control and selective to the sorghum crop, not affecting productivity, except in mixture with mineral oil (0.5%). Smetolachlor cannot be recommended in pre-emergence for the tested cultivars because it is not selective, reducing plants and productivity |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 2020-03-09T17:03:06Z 2020-03-09T17:03:06Z |
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 |
PIMENTEL, G. V. et al. Selectivity and effectiveness of herbicides in the grain sorghum crop. Planta Daninha, Viçosa, MG, v. 37, 2019. http://repositorio.ufla.br/jspui/handle/1/39265 |
identifier_str_mv |
PIMENTEL, G. V. et al. Selectivity and effectiveness of herbicides in the grain sorghum crop. Planta Daninha, Viçosa, MG, v. 37, 2019. |
url |
http://repositorio.ufla.br/jspui/handle/1/39265 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira da Ciência das Plantas Daninhas |
publisher.none.fl_str_mv |
Sociedade Brasileira da Ciência das Plantas Daninhas |
dc.source.none.fl_str_mv |
Planta Daninha reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1784549971139231744 |