Glyphosate in the production and forage quality of marandu grass

Detalhes bibliográficos
Autor(a) principal: Codognoto, Luciane da Cunha
Data de Publicação: 2021
Outros Autores: Conde, Thassiane Telles, Maltoni, Katia Luciene, Faria, Glaucia Amorim
Tipo de documento: Artigo
Idioma: por
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/39882
Resumo: The drift of the herbicide glyphosate, used for desiccating crops or controlling weeds, can result in growth-promoting or non-target plant development effects. Thus, it is possible to use the compound to increase the biomass of forage through the hormone effect. The objective of this study was to evaluate the effects of sublethal doses of glyphosate on the production of Urochloa brizantha cv. Marandu (Marandu grass) and its nutritional quality in ruminants. The design used was completely randomized, with five replications in a factorial scheme. The treatments used were as follows: control (without glyphosate application) and four sublethal doses of glyphosate (4, 10, 14, and 20 g ha-1 of the acid equivalent). The monthly collections consisted of collecting the plant material (0.20 m) from the surface, comprising of leaves and pseudocolmos (stem and leaf sheath) to determine the dry matter production and forage chemical-bromatological parameters. The results showed that leaf/stem ratio, neutral detergent fiber, and acid detergent fiber were affected exclusively by the harvest factor. The hormone effect of the herbicide occurs in the production of dry matter and lignin in the evaluated subdoses. For crude protein, there was an interaction between the factor doses and harvest, due to the effect of glyphosate and the management applied to the harvests, showing that the sublethal doses of glyphosate promoted the production of dry matter and the food quality of Marandu grass.
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spelling Glyphosate in the production and forage quality of marandu grassGlifosato na produção e qualidade de forragem de capim maranduHarvestHerbicidUnderdosesUrochloa brizantha.ColheitaHerbicidaSubdosesUrochloa brizantha.The drift of the herbicide glyphosate, used for desiccating crops or controlling weeds, can result in growth-promoting or non-target plant development effects. Thus, it is possible to use the compound to increase the biomass of forage through the hormone effect. The objective of this study was to evaluate the effects of sublethal doses of glyphosate on the production of Urochloa brizantha cv. Marandu (Marandu grass) and its nutritional quality in ruminants. The design used was completely randomized, with five replications in a factorial scheme. The treatments used were as follows: control (without glyphosate application) and four sublethal doses of glyphosate (4, 10, 14, and 20 g ha-1 of the acid equivalent). The monthly collections consisted of collecting the plant material (0.20 m) from the surface, comprising of leaves and pseudocolmos (stem and leaf sheath) to determine the dry matter production and forage chemical-bromatological parameters. The results showed that leaf/stem ratio, neutral detergent fiber, and acid detergent fiber were affected exclusively by the harvest factor. The hormone effect of the herbicide occurs in the production of dry matter and lignin in the evaluated subdoses. For crude protein, there was an interaction between the factor doses and harvest, due to the effect of glyphosate and the management applied to the harvests, showing that the sublethal doses of glyphosate promoted the production of dry matter and the food quality of Marandu grass.A deriva do herbicida glifosato, usado para dessecação de culturas ou no controle de plantas daninhas, pode resultar em efeitos promotores de crescimento ou desenvolvimento de plantas não alvo. Assim, surge a possibilidade de utilização do composto para incremento da biomassa de forrageiras, por efeito hormese. O objetivo deste trabalho foi avaliar os efeitos da aplicação de doses subletais de glifosato na produção de Urochloa brizantha cv. Marandu (capim Marandu) e sobre a qualidade nutricional para ruminantes. O delineamento utilizado foi o inteiramente casualizado com cinco repetições, em esquema fatorial. Os tratamentos utilizados foram: controle (sem aplicação de glifosato) e quatro doses subletais de glifosato (4, 10, 14 e 20 g ha-1 do equivalente ácido). As coletas mensais consistiram do recolhimento do material vegetal a 0,20 m da superfície, compreendendo folhas e pseudocolmos (colmo e bainha foliar) para determinação da produção de matéria seca e de parâmetros químico-bromatológicos da forragem. Os resultados mostraram que relação folha/colmo, fibra em detergente neutro e fibra em detergente ácido sofreram efeitos exclusivamente do fator corte. O efeito hormese do herbicida ocorre na produção de matéria seca e lignina nas subdoses avaliadas. Para proteína bruta houve interação entre os fatores doses e cortes, por efeito do glifosato e do manejo aplicado nos cortes, mostrando que as doses subletais do glifosato promovem a produção de matéria seca e a qualidade alimentar do capim Marandu.UEL2021-04-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/3988210.5433/1679-0359.2021v42n3Supl1p1695Semina: Ciências Agrárias; Vol. 42 No. 3Supl1 (2021); 1695-1706Semina: Ciências Agrárias; v. 42 n. 3Supl1 (2021); 1695-17061679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/39882/29450Copyright (c) 2021 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessCodognoto, Luciane da CunhaConde, Thassiane TellesMaltoni, Katia LucieneFaria, Glaucia Amorim2022-09-30T16:19:22Zoai:ojs.pkp.sfu.ca:article/39882Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-09-30T16:19:22Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Glyphosate in the production and forage quality of marandu grass
Glifosato na produção e qualidade de forragem de capim marandu
title Glyphosate in the production and forage quality of marandu grass
spellingShingle Glyphosate in the production and forage quality of marandu grass
Codognoto, Luciane da Cunha
Harvest
Herbicid
Underdoses
Urochloa brizantha.
Colheita
Herbicida
Subdoses
Urochloa brizantha.
title_short Glyphosate in the production and forage quality of marandu grass
title_full Glyphosate in the production and forage quality of marandu grass
title_fullStr Glyphosate in the production and forage quality of marandu grass
title_full_unstemmed Glyphosate in the production and forage quality of marandu grass
title_sort Glyphosate in the production and forage quality of marandu grass
author Codognoto, Luciane da Cunha
author_facet Codognoto, Luciane da Cunha
Conde, Thassiane Telles
Maltoni, Katia Luciene
Faria, Glaucia Amorim
author_role author
author2 Conde, Thassiane Telles
Maltoni, Katia Luciene
Faria, Glaucia Amorim
author2_role author
author
author
dc.contributor.author.fl_str_mv Codognoto, Luciane da Cunha
Conde, Thassiane Telles
Maltoni, Katia Luciene
Faria, Glaucia Amorim
dc.subject.por.fl_str_mv Harvest
Herbicid
Underdoses
Urochloa brizantha.
Colheita
Herbicida
Subdoses
Urochloa brizantha.
topic Harvest
Herbicid
Underdoses
Urochloa brizantha.
Colheita
Herbicida
Subdoses
Urochloa brizantha.
description The drift of the herbicide glyphosate, used for desiccating crops or controlling weeds, can result in growth-promoting or non-target plant development effects. Thus, it is possible to use the compound to increase the biomass of forage through the hormone effect. The objective of this study was to evaluate the effects of sublethal doses of glyphosate on the production of Urochloa brizantha cv. Marandu (Marandu grass) and its nutritional quality in ruminants. The design used was completely randomized, with five replications in a factorial scheme. The treatments used were as follows: control (without glyphosate application) and four sublethal doses of glyphosate (4, 10, 14, and 20 g ha-1 of the acid equivalent). The monthly collections consisted of collecting the plant material (0.20 m) from the surface, comprising of leaves and pseudocolmos (stem and leaf sheath) to determine the dry matter production and forage chemical-bromatological parameters. The results showed that leaf/stem ratio, neutral detergent fiber, and acid detergent fiber were affected exclusively by the harvest factor. The hormone effect of the herbicide occurs in the production of dry matter and lignin in the evaluated subdoses. For crude protein, there was an interaction between the factor doses and harvest, due to the effect of glyphosate and the management applied to the harvests, showing that the sublethal doses of glyphosate promoted the production of dry matter and the food quality of Marandu grass.
publishDate 2021
dc.date.none.fl_str_mv 2021-04-22
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://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/39882
10.5433/1679-0359.2021v42n3Supl1p1695
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/39882
identifier_str_mv 10.5433/1679-0359.2021v42n3Supl1p1695
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/39882/29450
dc.rights.driver.fl_str_mv Copyright (c) 2021 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2021 Semina: Ciências Agrárias
http://creativecommons.org/licenses/by-nc/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 42 No. 3Supl1 (2021); 1695-1706
Semina: Ciências Agrárias; v. 42 n. 3Supl1 (2021); 1695-1706
1679-0359
1676-546X
reponame:Semina. Ciências Agrárias (Online)
instname:Universidade Estadual de Londrina (UEL)
instacron:UEL
instname_str Universidade Estadual de Londrina (UEL)
instacron_str UEL
institution UEL
reponame_str Semina. Ciências Agrárias (Online)
collection Semina. Ciências Agrárias (Online)
repository.name.fl_str_mv Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)
repository.mail.fl_str_mv semina.agrarias@uel.br
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