INFLUENCE OF DROPLET SIZE ON SPRAY DEPOSITION AND WEED CONTROL USING GLYPHOSATE
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1809-4430-Eng.Agric.v41n4p449-457/2021 http://hdl.handle.net/11449/233643 |
Resumo: | Droplet size is one of the most important factors that affect spray deposition and weed control through the use of herbicides. The aim of this study was to evaluate the influence of the droplet size on the spray deposition and control of Euphorbia heterophylla and Urochloa ruziziensis by using glyphosate. The treatments included spraying glyphosate with fine, medium, coarse, very coarse, and ultra-coarse droplet sizes to determine the deposition, uniformity of distribution, visual control, and dry weight reduction (DWR). The treatments were compared with the values of the dose required to achieve 50% DWR or 50% visual control (C50) at 7, 14, 21, and 28 days after herbicide application. Fine and medium droplet sizes afforded high deposition values and low distribution uniformities in E. heterophylla. Fine and medium droplet sizes yielded the lowest C50 on visual control and DWR in E. heterophylla, respectively. The droplet size did not affect the spray deposition on U. ruziziensis plants; however, the larger droplets had less uniformity of distribution. In U. ruziziensis plants, spraying glyphosate with coarse and medium droplet sizes yielded the lowest values of C50 to visual control and DWR, respectively. |
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INFLUENCE OF DROPLET SIZE ON SPRAY DEPOSITION AND WEED CONTROL USING GLYPHOSATEapplication technologychemical controldose responsespray depositsDroplet size is one of the most important factors that affect spray deposition and weed control through the use of herbicides. The aim of this study was to evaluate the influence of the droplet size on the spray deposition and control of Euphorbia heterophylla and Urochloa ruziziensis by using glyphosate. The treatments included spraying glyphosate with fine, medium, coarse, very coarse, and ultra-coarse droplet sizes to determine the deposition, uniformity of distribution, visual control, and dry weight reduction (DWR). The treatments were compared with the values of the dose required to achieve 50% DWR or 50% visual control (C50) at 7, 14, 21, and 28 days after herbicide application. Fine and medium droplet sizes afforded high deposition values and low distribution uniformities in E. heterophylla. Fine and medium droplet sizes yielded the lowest C50 on visual control and DWR in E. heterophylla, respectively. The droplet size did not affect the spray deposition on U. ruziziensis plants; however, the larger droplets had less uniformity of distribution. In U. ruziziensis plants, spraying glyphosate with coarse and medium droplet sizes yielded the lowest values of C50 to visual control and DWR, respectively.Universidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de EngenhariaUniversidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de Ciências Agrárias e TecnológicasUniversidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de Ciências AgronômicasUniversidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de EngenhariaUniversidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de Ciências Agrárias e TecnológicasUniversidade Estadual Paulista “Júlio de Mesquita Filho” Faculdade de Ciências AgronômicasUniversidade Estadual Paulista (UNESP)Oliveira, Osmar G. T. M. [UNESP]Lopes, Paulo R. M. [UNESP]Raetano, Carlos G. [UNESP]Lima, Ronaldo C. [UNESP]Prado, Evandro P. [UNESP]2022-05-01T09:31:05Z2022-05-01T09:31:05Z2021-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article449-457http://dx.doi.org/10.1590/1809-4430-Eng.Agric.v41n4p449-457/2021Engenharia Agricola, v. 41, n. 4, p. 449-457, 2021.1808-43890100-6916http://hdl.handle.net/11449/23364310.1590/1809-4430-Eng.Agric.v41n4p449-457/20212-s2.0-85116773011Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEngenharia Agricolainfo:eu-repo/semantics/openAccess2024-05-07T13:47:04Zoai:repositorio.unesp.br:11449/233643Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:17:43.170397Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
INFLUENCE OF DROPLET SIZE ON SPRAY DEPOSITION AND WEED CONTROL USING GLYPHOSATE |
title |
INFLUENCE OF DROPLET SIZE ON SPRAY DEPOSITION AND WEED CONTROL USING GLYPHOSATE |
spellingShingle |
INFLUENCE OF DROPLET SIZE ON SPRAY DEPOSITION AND WEED CONTROL USING GLYPHOSATE Oliveira, Osmar G. T. M. [UNESP] application technology chemical control dose response spray deposits |
title_short |
INFLUENCE OF DROPLET SIZE ON SPRAY DEPOSITION AND WEED CONTROL USING GLYPHOSATE |
title_full |
INFLUENCE OF DROPLET SIZE ON SPRAY DEPOSITION AND WEED CONTROL USING GLYPHOSATE |
title_fullStr |
INFLUENCE OF DROPLET SIZE ON SPRAY DEPOSITION AND WEED CONTROL USING GLYPHOSATE |
title_full_unstemmed |
INFLUENCE OF DROPLET SIZE ON SPRAY DEPOSITION AND WEED CONTROL USING GLYPHOSATE |
title_sort |
INFLUENCE OF DROPLET SIZE ON SPRAY DEPOSITION AND WEED CONTROL USING GLYPHOSATE |
author |
Oliveira, Osmar G. T. M. [UNESP] |
author_facet |
Oliveira, Osmar G. T. M. [UNESP] Lopes, Paulo R. M. [UNESP] Raetano, Carlos G. [UNESP] Lima, Ronaldo C. [UNESP] Prado, Evandro P. [UNESP] |
author_role |
author |
author2 |
Lopes, Paulo R. M. [UNESP] Raetano, Carlos G. [UNESP] Lima, Ronaldo C. [UNESP] Prado, Evandro P. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Oliveira, Osmar G. T. M. [UNESP] Lopes, Paulo R. M. [UNESP] Raetano, Carlos G. [UNESP] Lima, Ronaldo C. [UNESP] Prado, Evandro P. [UNESP] |
dc.subject.por.fl_str_mv |
application technology chemical control dose response spray deposits |
topic |
application technology chemical control dose response spray deposits |
description |
Droplet size is one of the most important factors that affect spray deposition and weed control through the use of herbicides. The aim of this study was to evaluate the influence of the droplet size on the spray deposition and control of Euphorbia heterophylla and Urochloa ruziziensis by using glyphosate. The treatments included spraying glyphosate with fine, medium, coarse, very coarse, and ultra-coarse droplet sizes to determine the deposition, uniformity of distribution, visual control, and dry weight reduction (DWR). The treatments were compared with the values of the dose required to achieve 50% DWR or 50% visual control (C50) at 7, 14, 21, and 28 days after herbicide application. Fine and medium droplet sizes afforded high deposition values and low distribution uniformities in E. heterophylla. Fine and medium droplet sizes yielded the lowest C50 on visual control and DWR in E. heterophylla, respectively. The droplet size did not affect the spray deposition on U. ruziziensis plants; however, the larger droplets had less uniformity of distribution. In U. ruziziensis plants, spraying glyphosate with coarse and medium droplet sizes yielded the lowest values of C50 to visual control and DWR, respectively. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-07-01 2022-05-01T09:31:05Z 2022-05-01T09:31:05Z |
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/10.1590/1809-4430-Eng.Agric.v41n4p449-457/2021 Engenharia Agricola, v. 41, n. 4, p. 449-457, 2021. 1808-4389 0100-6916 http://hdl.handle.net/11449/233643 10.1590/1809-4430-Eng.Agric.v41n4p449-457/2021 2-s2.0-85116773011 |
url |
http://dx.doi.org/10.1590/1809-4430-Eng.Agric.v41n4p449-457/2021 http://hdl.handle.net/11449/233643 |
identifier_str_mv |
Engenharia Agricola, v. 41, n. 4, p. 449-457, 2021. 1808-4389 0100-6916 10.1590/1809-4430-Eng.Agric.v41n4p449-457/2021 2-s2.0-85116773011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Engenharia Agricola |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
449-457 |
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_ |
1808128342091628544 |