Dynamics of 2,4-D and Dicamba Applied to Corn Straw and Their Residual Action in Weeds
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3390/plants11202800 http://hdl.handle.net/11449/249309 |
Resumo: | 2,4-D and dicamba are used in the postemergence management of eudicotyledonous weeds in different crops, most of which are grown under no-tillage systems. Due to the application methods for these products, their dynamics in straw and their residual action in soil have rarely been explored. Thus, the objective of this study was to evaluate the dynamics of 2,4-D and dicamba that have been applied to corn straw and to verify their relationship with residual control action in weeds. In the dynamics experiments, the herbicides were applied to 5 t ha−1 of straw, and rainfall simulations were performed with variable amounts and at different periods after application to evaluate herbicide movement in the straw. In the residual action experiments, the species Digitaria insularis, Conyza spp., Bidens pilosa, Amaranthus hybridus, Euphorbia heterophylla, and Eleusine indica were sown in trays, and 2,4-D and dicamba were applied directly to the soil, to the soil with the subsequent addition of the straw, and to the straw; all of these applications were followed by a simulation of 10 mm of rain. The physical effect of the straw and the efficacy of the herbicides in terms of pre-emergence control of the weed species were evaluated. The leaching of 2,4-D and dicamba from the corn straw increased with a higher volume of rainfall, and the longer the drought period was, the lower the final amount of herbicide that leached. The presence of the corn straw on the soil exerted a physical control effect on Conyza spp.; significantly reduced the infestation of D. insularis, B. pilosa, A. hybridus, and E. indica; and broadened the control spectrum of 2,4-D and dicamba, assisting in its residual action and ensuring high levels of control of the evaluated weeds. In the absence of the straw, 2,4-D effectively controlled the pre-emergence of D. insularis, Conyza spp., and A. hybridus, and dicamba effectively controlled D. insularis, Conyza spp., B. pilosa, A. hybridus, E. heterophylla, and E. indica. |
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Dynamics of 2,4-D and Dicamba Applied to Corn Straw and Their Residual Action in Weedsauxinic herbicidescholine saltdiglycolamine saltefficacyeudicotyledonousleachingmonocotyledonous2,4-D and dicamba are used in the postemergence management of eudicotyledonous weeds in different crops, most of which are grown under no-tillage systems. Due to the application methods for these products, their dynamics in straw and their residual action in soil have rarely been explored. Thus, the objective of this study was to evaluate the dynamics of 2,4-D and dicamba that have been applied to corn straw and to verify their relationship with residual control action in weeds. In the dynamics experiments, the herbicides were applied to 5 t ha−1 of straw, and rainfall simulations were performed with variable amounts and at different periods after application to evaluate herbicide movement in the straw. In the residual action experiments, the species Digitaria insularis, Conyza spp., Bidens pilosa, Amaranthus hybridus, Euphorbia heterophylla, and Eleusine indica were sown in trays, and 2,4-D and dicamba were applied directly to the soil, to the soil with the subsequent addition of the straw, and to the straw; all of these applications were followed by a simulation of 10 mm of rain. The physical effect of the straw and the efficacy of the herbicides in terms of pre-emergence control of the weed species were evaluated. The leaching of 2,4-D and dicamba from the corn straw increased with a higher volume of rainfall, and the longer the drought period was, the lower the final amount of herbicide that leached. The presence of the corn straw on the soil exerted a physical control effect on Conyza spp.; significantly reduced the infestation of D. insularis, B. pilosa, A. hybridus, and E. indica; and broadened the control spectrum of 2,4-D and dicamba, assisting in its residual action and ensuring high levels of control of the evaluated weeds. In the absence of the straw, 2,4-D effectively controlled the pre-emergence of D. insularis, Conyza spp., and A. hybridus, and dicamba effectively controlled D. insularis, Conyza spp., B. pilosa, A. hybridus, E. heterophylla, and E. indica.Department of Plant Protection College of Agricultural Sciences São Paulo State University (Universidade Estadual Paulista “Júlio de Mesquita Filho” UNESP), SPDepartment of Plant Protection College of Agricultural Sciences São Paulo State University (Universidade Estadual Paulista “Júlio de Mesquita Filho” UNESP), SPUniversidade Estadual Paulista (UNESP)Gazola, Tiago [UNESP]Costa, Renato Nunes [UNESP]Carbonari, Caio Antonio [UNESP]Velini, Edivaldo Domingues [UNESP]2023-07-29T15:12:37Z2023-07-29T15:12:37Z2022-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3390/plants11202800Plants, v. 11, n. 20, 2022.2223-7747http://hdl.handle.net/11449/24930910.3390/plants112028002-s2.0-85140784483Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPlantsinfo:eu-repo/semantics/openAccess2024-04-30T15:56:29Zoai:repositorio.unesp.br:11449/249309Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:39:10.373747Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Dynamics of 2,4-D and Dicamba Applied to Corn Straw and Their Residual Action in Weeds |
title |
Dynamics of 2,4-D and Dicamba Applied to Corn Straw and Their Residual Action in Weeds |
spellingShingle |
Dynamics of 2,4-D and Dicamba Applied to Corn Straw and Their Residual Action in Weeds Gazola, Tiago [UNESP] auxinic herbicides choline salt diglycolamine salt efficacy eudicotyledonous leaching monocotyledonous |
title_short |
Dynamics of 2,4-D and Dicamba Applied to Corn Straw and Their Residual Action in Weeds |
title_full |
Dynamics of 2,4-D and Dicamba Applied to Corn Straw and Their Residual Action in Weeds |
title_fullStr |
Dynamics of 2,4-D and Dicamba Applied to Corn Straw and Their Residual Action in Weeds |
title_full_unstemmed |
Dynamics of 2,4-D and Dicamba Applied to Corn Straw and Their Residual Action in Weeds |
title_sort |
Dynamics of 2,4-D and Dicamba Applied to Corn Straw and Their Residual Action in Weeds |
author |
Gazola, Tiago [UNESP] |
author_facet |
Gazola, Tiago [UNESP] Costa, Renato Nunes [UNESP] Carbonari, Caio Antonio [UNESP] Velini, Edivaldo Domingues [UNESP] |
author_role |
author |
author2 |
Costa, Renato Nunes [UNESP] Carbonari, Caio Antonio [UNESP] Velini, Edivaldo Domingues [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Gazola, Tiago [UNESP] Costa, Renato Nunes [UNESP] Carbonari, Caio Antonio [UNESP] Velini, Edivaldo Domingues [UNESP] |
dc.subject.por.fl_str_mv |
auxinic herbicides choline salt diglycolamine salt efficacy eudicotyledonous leaching monocotyledonous |
topic |
auxinic herbicides choline salt diglycolamine salt efficacy eudicotyledonous leaching monocotyledonous |
description |
2,4-D and dicamba are used in the postemergence management of eudicotyledonous weeds in different crops, most of which are grown under no-tillage systems. Due to the application methods for these products, their dynamics in straw and their residual action in soil have rarely been explored. Thus, the objective of this study was to evaluate the dynamics of 2,4-D and dicamba that have been applied to corn straw and to verify their relationship with residual control action in weeds. In the dynamics experiments, the herbicides were applied to 5 t ha−1 of straw, and rainfall simulations were performed with variable amounts and at different periods after application to evaluate herbicide movement in the straw. In the residual action experiments, the species Digitaria insularis, Conyza spp., Bidens pilosa, Amaranthus hybridus, Euphorbia heterophylla, and Eleusine indica were sown in trays, and 2,4-D and dicamba were applied directly to the soil, to the soil with the subsequent addition of the straw, and to the straw; all of these applications were followed by a simulation of 10 mm of rain. The physical effect of the straw and the efficacy of the herbicides in terms of pre-emergence control of the weed species were evaluated. The leaching of 2,4-D and dicamba from the corn straw increased with a higher volume of rainfall, and the longer the drought period was, the lower the final amount of herbicide that leached. The presence of the corn straw on the soil exerted a physical control effect on Conyza spp.; significantly reduced the infestation of D. insularis, B. pilosa, A. hybridus, and E. indica; and broadened the control spectrum of 2,4-D and dicamba, assisting in its residual action and ensuring high levels of control of the evaluated weeds. In the absence of the straw, 2,4-D effectively controlled the pre-emergence of D. insularis, Conyza spp., and A. hybridus, and dicamba effectively controlled D. insularis, Conyza spp., B. pilosa, A. hybridus, E. heterophylla, and E. indica. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-10-01 2023-07-29T15:12:37Z 2023-07-29T15:12:37Z |
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 |
http://dx.doi.org/10.3390/plants11202800 Plants, v. 11, n. 20, 2022. 2223-7747 http://hdl.handle.net/11449/249309 10.3390/plants11202800 2-s2.0-85140784483 |
url |
http://dx.doi.org/10.3390/plants11202800 http://hdl.handle.net/11449/249309 |
identifier_str_mv |
Plants, v. 11, n. 20, 2022. 2223-7747 10.3390/plants11202800 2-s2.0-85140784483 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Plants |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128839498334208 |