Effect of glyphosate drift on marandu grass
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
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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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 |
|
_version_ |
1808128386685468672 |