Phytotoxicity in soybean crop caused by simulated dicamba drift

Detalhes bibliográficos
Autor(a) principal: Alves, Guilherme Sousa
Data de Publicação: 2021
Outros Autores: Cunha, João Paulo Arantes Rodrigues da, Silva, Sérgio Macedo, Vieira, Gustavo de Souza, Santos, Mariana Pistore, Landim, Thiago Nunes, Alves, Thales Cassemiro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/26912
Resumo: The objective of this work was to evaluate injury symptoms on soybean not tolerant to dicamba (3,6-dichloro-2-methoxybenzoic acid), as well as crop yield, after the application of sub-rates of the herbicide to simulate physical drift in tropical conditions. Dicamba rates of 0, 5.8, 14.4, 28.8, 57.6, and 576 g acid equivalent per hectare were applied at the vegetative (V3) and reproductive (R1) stages of soybean, using a backpack sprayer pressurized with CO2, equipped with air-induction flat fan spray nozzles; the pressure and rate of application were 250 kPa and 200 L ha-1, respectively. Visible injury, the soil-plant analysis development (SPAD) index (leaf chlorophyll content) at 14 days after herbicide application, and soybean crop yield were evaluated. These variables were influenced by the crop stage in which the dicamba rates were applied. Rates below 28.8 g ha-1 caused less injury to soybean when applied at the R1 stage; however, there were no differences in yield between stages. A 1% dicamba drift in tropical conditions reduces soybean yield by 12%.
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spelling Phytotoxicity in soybean crop caused by simulated dicamba driftFitotoxicidade na cultura de soja causada por deriva simulada de dicambaGlycine max; phenological stage; symptomology; synthetic auxin; yieldGlycine max; estádio fenológico; sintomatologia; auxina sintética; produtividadeThe objective of this work was to evaluate injury symptoms on soybean not tolerant to dicamba (3,6-dichloro-2-methoxybenzoic acid), as well as crop yield, after the application of sub-rates of the herbicide to simulate physical drift in tropical conditions. Dicamba rates of 0, 5.8, 14.4, 28.8, 57.6, and 576 g acid equivalent per hectare were applied at the vegetative (V3) and reproductive (R1) stages of soybean, using a backpack sprayer pressurized with CO2, equipped with air-induction flat fan spray nozzles; the pressure and rate of application were 250 kPa and 200 L ha-1, respectively. Visible injury, the soil-plant analysis development (SPAD) index (leaf chlorophyll content) at 14 days after herbicide application, and soybean crop yield were evaluated. These variables were influenced by the crop stage in which the dicamba rates were applied. Rates below 28.8 g ha-1 caused less injury to soybean when applied at the R1 stage; however, there were no differences in yield between stages. A 1% dicamba drift in tropical conditions reduces soybean yield by 12%.O objetivo deste trabalho foi avaliar os sintomas de injúria em soja não tolerante ao dicamba (ácido 3,6-dicloro-2-metoxibenzóico), bem como a produtividade da cultura, após a aplicação de subdoses do herbicida para simulação da deriva física em condições tropicais. Doses de dicamba de 0, 5,8, 14,4, 28,8, 57,6 e 576 g de equivalente ácido por hectare foram aplicadas nos estádios vegetativo (V3) e reprodutivo (R1) da soja, com uso de pulverizador costal acionado por CO2, dotado de pontas de jato plano com indução de ar; a pressão e a taxa de aplicação foram de 250 kPa e 200 L ha-1, respectivamente. Foram avaliados injúria visual, índice “soil-plant analysis development” (SPAD) (teor de clorofila das folhas) aos 14 dias após a aplicação do herbicida e produtividade da cultura de soja. Essas variáveis foram influenciadas pelo estádio da cultura em que as doses de dicamba foram aplicadas. Doses inferiores a 28,8 g ha-1 causaram menor injúria na soja quando aplicadas no estádio R1; contudo, não houve diferenças de produtividade entre os estádios. A deriva de dicamba de 1%, em condições tropicais, reduz a produtividade da soja em 12%.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraAlves, Guilherme SousaCunha, João Paulo Arantes Rodrigues daSilva, Sérgio MacedoVieira, Gustavo de SouzaSantos, Mariana PistoreLandim, Thiago NunesAlves, Thales Cassemiro2021-05-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/26912Pesquisa Agropecuaria Brasileira; V.56, Jan./Dec., 2021: Publicação contínua em volume anual; e01764Pesquisa Agropecuária Brasileira; V.56, Jan./Dec., 2021: Publicação contínua em volume anual; e017641678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/26912/14872Direitos autorais 2021 Pesquisa Agropecuária Brasileirainfo:eu-repo/semantics/openAccess2022-05-18T18:27:35Zoai:ojs.seer.sct.embrapa.br:article/26912Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2022-05-18T18:27:35Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Phytotoxicity in soybean crop caused by simulated dicamba drift
Fitotoxicidade na cultura de soja causada por deriva simulada de dicamba
title Phytotoxicity in soybean crop caused by simulated dicamba drift
spellingShingle Phytotoxicity in soybean crop caused by simulated dicamba drift
Alves, Guilherme Sousa
Glycine max; phenological stage; symptomology; synthetic auxin; yield
Glycine max; estádio fenológico; sintomatologia; auxina sintética; produtividade
title_short Phytotoxicity in soybean crop caused by simulated dicamba drift
title_full Phytotoxicity in soybean crop caused by simulated dicamba drift
title_fullStr Phytotoxicity in soybean crop caused by simulated dicamba drift
title_full_unstemmed Phytotoxicity in soybean crop caused by simulated dicamba drift
title_sort Phytotoxicity in soybean crop caused by simulated dicamba drift
author Alves, Guilherme Sousa
author_facet Alves, Guilherme Sousa
Cunha, João Paulo Arantes Rodrigues da
Silva, Sérgio Macedo
Vieira, Gustavo de Souza
Santos, Mariana Pistore
Landim, Thiago Nunes
Alves, Thales Cassemiro
author_role author
author2 Cunha, João Paulo Arantes Rodrigues da
Silva, Sérgio Macedo
Vieira, Gustavo de Souza
Santos, Mariana Pistore
Landim, Thiago Nunes
Alves, Thales Cassemiro
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Alves, Guilherme Sousa
Cunha, João Paulo Arantes Rodrigues da
Silva, Sérgio Macedo
Vieira, Gustavo de Souza
Santos, Mariana Pistore
Landim, Thiago Nunes
Alves, Thales Cassemiro
dc.subject.por.fl_str_mv Glycine max; phenological stage; symptomology; synthetic auxin; yield
Glycine max; estádio fenológico; sintomatologia; auxina sintética; produtividade
topic Glycine max; phenological stage; symptomology; synthetic auxin; yield
Glycine max; estádio fenológico; sintomatologia; auxina sintética; produtividade
description The objective of this work was to evaluate injury symptoms on soybean not tolerant to dicamba (3,6-dichloro-2-methoxybenzoic acid), as well as crop yield, after the application of sub-rates of the herbicide to simulate physical drift in tropical conditions. Dicamba rates of 0, 5.8, 14.4, 28.8, 57.6, and 576 g acid equivalent per hectare were applied at the vegetative (V3) and reproductive (R1) stages of soybean, using a backpack sprayer pressurized with CO2, equipped with air-induction flat fan spray nozzles; the pressure and rate of application were 250 kPa and 200 L ha-1, respectively. Visible injury, the soil-plant analysis development (SPAD) index (leaf chlorophyll content) at 14 days after herbicide application, and soybean crop yield were evaluated. These variables were influenced by the crop stage in which the dicamba rates were applied. Rates below 28.8 g ha-1 caused less injury to soybean when applied at the R1 stage; however, there were no differences in yield between stages. A 1% dicamba drift in tropical conditions reduces soybean yield by 12%.
publishDate 2021
dc.date.none.fl_str_mv 2021-05-13
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/26912
url https://seer.sct.embrapa.br/index.php/pab/article/view/26912
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/26912/14872
dc.rights.driver.fl_str_mv Direitos autorais 2021 Pesquisa Agropecuária Brasileira
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Direitos autorais 2021 Pesquisa Agropecuária Brasileira
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.56, Jan./Dec., 2021: Publicação contínua em volume anual; e01764
Pesquisa Agropecuária Brasileira; V.56, Jan./Dec., 2021: Publicação contínua em volume anual; e01764
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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