Effect of glyphosate drift on marandu grass

Detalhes bibliográficos
Autor(a) principal: da Cunha Codognoto, Luciane
Data de Publicação: 2020
Outros Autores: Conde, Thassiane Telles, Faria, Glaucia Amorim [UNESP], Maltoni, Katia Luciene [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.5433/1679-0359.2021v42n1p347
http://hdl.handle.net/11449/208232
Resumo: Glyphosate drift in plants that are not resistant to the herbicide molecule can result in stimulation to certain biological features, characterizing the phenomenon of hormesis. On this basis, productive and chemical traits were evaluated in marandu grass, in a simulation of the drift effect, using sublethal doses of the herbicide glyphosate. The experiment was in laid out in a randomized-block design with split plots in time, in four replicates. The effect of sublethal doses of glyphosate acid equivalent (a.e.) (21.60, 43.20, 64.80, 86.40 and 108.00 g ha-1) and control was evaluated in the plots; and the effect of harvesting at 92, 113, 134 and 155 days after sowing (DAS) the grass was evaluated in the subplots. The Urochloa brizantha cv. Marandu was collected at a height of 0.20 m, at a defoliation interval of 21 days, to estimate production and chemical traits, in experimental plots with a usable area of 7.5 m2. Leaf: stem ratio was influenced by the interaction between the evaluated factors (dose and harvest). Dose fitted a second-order polynomial model, with a hormesis effect of 21.60 to 76.50 g ha-1 of glyphosate a.e. Harvesting at 134 DAS differed significantly from 92 DAS. The forage yield showed a linear response inversely proportional to the increasing glyphosate doses. There was a polynomial increase in leaf phosphorus content, characterizing hormesis up to the sublethal dose of 72.50 g a.e. ha-1. Harvest influenced the neutral detergent fiber, acid detergent fiber, lignin and leaf phosphorus contents.
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spelling Effect of glyphosate drift on marandu grassEfeito da deriva de glifosato em capim maranduHerbicideHormesisSublethal doseUrochloa brizanthaGlyphosate drift in plants that are not resistant to the herbicide molecule can result in stimulation to certain biological features, characterizing the phenomenon of hormesis. On this basis, productive and chemical traits were evaluated in marandu grass, in a simulation of the drift effect, using sublethal doses of the herbicide glyphosate. The experiment was in laid out in a randomized-block design with split plots in time, in four replicates. The effect of sublethal doses of glyphosate acid equivalent (a.e.) (21.60, 43.20, 64.80, 86.40 and 108.00 g ha-1) and control was evaluated in the plots; and the effect of harvesting at 92, 113, 134 and 155 days after sowing (DAS) the grass was evaluated in the subplots. The Urochloa brizantha cv. Marandu was collected at a height of 0.20 m, at a defoliation interval of 21 days, to estimate production and chemical traits, in experimental plots with a usable area of 7.5 m2. Leaf: stem ratio was influenced by the interaction between the evaluated factors (dose and harvest). Dose fitted a second-order polynomial model, with a hormesis effect of 21.60 to 76.50 g ha-1 of glyphosate a.e. Harvesting at 134 DAS differed significantly from 92 DAS. The forage yield showed a linear response inversely proportional to the increasing glyphosate doses. There was a polynomial increase in leaf phosphorus content, characterizing hormesis up to the sublethal dose of 72.50 g a.e. ha-1. Harvest influenced the neutral detergent fiber, acid detergent fiber, lignin and leaf phosphorus contents.Instituto Federal de Educação Ciência e Tecnologia de Rondônia IFROIFROPrograma de Pós-Graduação em Agronomia Universidade Estadual Paulista “Júlio de Mesquita Filho” UNESPPrograma de Pós-Graduação em Agronomia Universidade Estadual Paulista “Júlio de Mesquita Filho” UNESPUniversidade Estadual de Maringá (UEM)Universidade Estadual Paulista (Unesp)da Cunha Codognoto, LucianeConde, Thassiane TellesFaria, Glaucia Amorim [UNESP]Maltoni, Katia Luciene [UNESP]2021-06-25T11:08:39Z2021-06-25T11:08:39Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article347-360http://dx.doi.org/10.5433/1679-0359.2021v42n1p347Semina:Ciencias Agrarias, v. 42, n. 1, p. 347-360, 2020.1679-03591676-546Xhttp://hdl.handle.net/11449/20823210.5433/1679-0359.2021v42n1p3472-s2.0-85097509006Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSemina:Ciencias Agrariasinfo:eu-repo/semantics/openAccess2024-07-05T18:12:37Zoai:repositorio.unesp.br:11449/208232Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:36:21.868143Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Effect of glyphosate drift on marandu grass
Efeito da deriva de glifosato em capim marandu
title Effect of glyphosate drift on marandu grass
spellingShingle Effect of glyphosate drift on marandu grass
da Cunha Codognoto, Luciane
Herbicide
Hormesis
Sublethal dose
Urochloa brizantha
title_short Effect of glyphosate drift on marandu grass
title_full Effect of glyphosate drift on marandu grass
title_fullStr Effect of glyphosate drift on marandu grass
title_full_unstemmed Effect of glyphosate drift on marandu grass
title_sort Effect of glyphosate drift on marandu grass
author da Cunha Codognoto, Luciane
author_facet da Cunha Codognoto, Luciane
Conde, Thassiane Telles
Faria, Glaucia Amorim [UNESP]
Maltoni, Katia Luciene [UNESP]
author_role author
author2 Conde, Thassiane Telles
Faria, Glaucia Amorim [UNESP]
Maltoni, Katia Luciene [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual de Maringá (UEM)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv da Cunha Codognoto, Luciane
Conde, Thassiane Telles
Faria, Glaucia Amorim [UNESP]
Maltoni, Katia Luciene [UNESP]
dc.subject.por.fl_str_mv Herbicide
Hormesis
Sublethal dose
Urochloa brizantha
topic Herbicide
Hormesis
Sublethal dose
Urochloa brizantha
description Glyphosate drift in plants that are not resistant to the herbicide molecule can result in stimulation to certain biological features, characterizing the phenomenon of hormesis. On this basis, productive and chemical traits were evaluated in marandu grass, in a simulation of the drift effect, using sublethal doses of the herbicide glyphosate. The experiment was in laid out in a randomized-block design with split plots in time, in four replicates. The effect of sublethal doses of glyphosate acid equivalent (a.e.) (21.60, 43.20, 64.80, 86.40 and 108.00 g ha-1) and control was evaluated in the plots; and the effect of harvesting at 92, 113, 134 and 155 days after sowing (DAS) the grass was evaluated in the subplots. The Urochloa brizantha cv. Marandu was collected at a height of 0.20 m, at a defoliation interval of 21 days, to estimate production and chemical traits, in experimental plots with a usable area of 7.5 m2. Leaf: stem ratio was influenced by the interaction between the evaluated factors (dose and harvest). Dose fitted a second-order polynomial model, with a hormesis effect of 21.60 to 76.50 g ha-1 of glyphosate a.e. Harvesting at 134 DAS differed significantly from 92 DAS. The forage yield showed a linear response inversely proportional to the increasing glyphosate doses. There was a polynomial increase in leaf phosphorus content, characterizing hormesis up to the sublethal dose of 72.50 g a.e. ha-1. Harvest influenced the neutral detergent fiber, acid detergent fiber, lignin and leaf phosphorus contents.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
2021-06-25T11:08:39Z
2021-06-25T11:08:39Z
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/10.5433/1679-0359.2021v42n1p347
Semina:Ciencias Agrarias, v. 42, n. 1, p. 347-360, 2020.
1679-0359
1676-546X
http://hdl.handle.net/11449/208232
10.5433/1679-0359.2021v42n1p347
2-s2.0-85097509006
url http://dx.doi.org/10.5433/1679-0359.2021v42n1p347
http://hdl.handle.net/11449/208232
identifier_str_mv Semina:Ciencias Agrarias, v. 42, n. 1, p. 347-360, 2020.
1679-0359
1676-546X
10.5433/1679-0359.2021v42n1p347
2-s2.0-85097509006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Semina:Ciencias Agrarias
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 347-360
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
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