Absorption velocity of glufosinate and its effects on weeds and cotton

Detalhes bibliográficos
Autor(a) principal: De Freitas E Silva, Ilca Puertas [UNESP]
Data de Publicação: 2016
Outros Autores: Carbonari, Caio Antonio [UNESP], Velini, Edivaldo Domingues [UNESP], Silva, Josué Ferreira [UNESP], Tropaldi, Leandro [UNESP], Gomes, Giovanna Larissa Gimenes Cotrick [UNESP]
Tipo de documento: Artigo
Idioma: eng
spa
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/232509
Resumo: Glufosinate ammonium, an inhibitor of the enzyme glutamine synthetase (GS), is one of the most important herbicides for cotton cultivation and it is utilized for weed management in directed spray applications indicated for conventional cultivars. This study aimed to evaluate the absorption velocity of glufosinate ammonium and its effects on weed and cotton (Gossypium hirsutum L.) plants. The study was carried out in a greenhouse with the cotton cultivar FiberMax 910 and the weeds Brachiaria decumbens and Ipomoea grandifolia. The experimental design was completely randomized and treatments were: the herbicide glufosinate ammonium (0.4 kg a.i. ha-1); five periods before a simulated rain (times for absorption) (1, 3, 6, 24 and 48 h between herbicide application and simulated rain); a control without herbicide; and four repetitions per treatment. Plants were harvested 2 d after herbicide application to quantify their contents of ammonia, glutamine and glufosinate. Visual injury of plants was quantified at 1, 3, 6, 8 and 10 d after application (DAA) of glufosinate ammonium using a percentage scale for damages. Regression analyses were performed on the results and a standard error (by t test; p≤0.05) was established for the means. Glufosinate ammonium absorption increased up to 24 h in cotton, and 48 h in B. decumbens and I. grandifolia. Despite the increase in glufosinate levels in 48 h without rain periods, the contents of ammonia were increased and glutamine was reduced between 1 and 6 h without rains. In addition, the three species presented severe injuries starting at 3 h without rain.
id UNSP_7bf2a5e6cad2ad3372b4b099552bd6e4
oai_identifier_str oai:repositorio.unesp.br:11449/232509
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling Absorption velocity of glufosinate and its effects on weeds and cottonGossypium hirsutumHerbicideMode of actionWeedsGlufosinate ammonium, an inhibitor of the enzyme glutamine synthetase (GS), is one of the most important herbicides for cotton cultivation and it is utilized for weed management in directed spray applications indicated for conventional cultivars. This study aimed to evaluate the absorption velocity of glufosinate ammonium and its effects on weed and cotton (Gossypium hirsutum L.) plants. The study was carried out in a greenhouse with the cotton cultivar FiberMax 910 and the weeds Brachiaria decumbens and Ipomoea grandifolia. The experimental design was completely randomized and treatments were: the herbicide glufosinate ammonium (0.4 kg a.i. ha-1); five periods before a simulated rain (times for absorption) (1, 3, 6, 24 and 48 h between herbicide application and simulated rain); a control without herbicide; and four repetitions per treatment. Plants were harvested 2 d after herbicide application to quantify their contents of ammonia, glutamine and glufosinate. Visual injury of plants was quantified at 1, 3, 6, 8 and 10 d after application (DAA) of glufosinate ammonium using a percentage scale for damages. Regression analyses were performed on the results and a standard error (by t test; p≤0.05) was established for the means. Glufosinate ammonium absorption increased up to 24 h in cotton, and 48 h in B. decumbens and I. grandifolia. Despite the increase in glufosinate levels in 48 h without rain periods, the contents of ammonia were increased and glutamine was reduced between 1 and 6 h without rains. In addition, the three species presented severe injuries starting at 3 h without rain.Universidade Estadual Paulista 'Julio de Mesquita Filho' Faculdade de Ciências AgronômicasUniversidade Estadual Paulista 'Julio de Mesquita Filho' Faculdade de Ciências AgronômicasUniversidade Estadual Paulista (UNESP)De Freitas E Silva, Ilca Puertas [UNESP]Carbonari, Caio Antonio [UNESP]Velini, Edivaldo Domingues [UNESP]Silva, Josué Ferreira [UNESP]Tropaldi, Leandro [UNESP]Gomes, Giovanna Larissa Gimenes Cotrick [UNESP]2022-04-29T18:36:17Z2022-04-29T18:36:17Z2016-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article239-249Agrociencia, v. 50, n. 2, p. 239-249, 2016.1405-3195http://hdl.handle.net/11449/2325092-s2.0-84960476625Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengspaAgrocienciainfo:eu-repo/semantics/openAccess2024-04-30T15:55:05Zoai:repositorio.unesp.br:11449/232509Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:05:42.041075Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Absorption velocity of glufosinate and its effects on weeds and cotton
title Absorption velocity of glufosinate and its effects on weeds and cotton
spellingShingle Absorption velocity of glufosinate and its effects on weeds and cotton
De Freitas E Silva, Ilca Puertas [UNESP]
Gossypium hirsutum
Herbicide
Mode of action
Weeds
title_short Absorption velocity of glufosinate and its effects on weeds and cotton
title_full Absorption velocity of glufosinate and its effects on weeds and cotton
title_fullStr Absorption velocity of glufosinate and its effects on weeds and cotton
title_full_unstemmed Absorption velocity of glufosinate and its effects on weeds and cotton
title_sort Absorption velocity of glufosinate and its effects on weeds and cotton
author De Freitas E Silva, Ilca Puertas [UNESP]
author_facet De Freitas E Silva, Ilca Puertas [UNESP]
Carbonari, Caio Antonio [UNESP]
Velini, Edivaldo Domingues [UNESP]
Silva, Josué Ferreira [UNESP]
Tropaldi, Leandro [UNESP]
Gomes, Giovanna Larissa Gimenes Cotrick [UNESP]
author_role author
author2 Carbonari, Caio Antonio [UNESP]
Velini, Edivaldo Domingues [UNESP]
Silva, Josué Ferreira [UNESP]
Tropaldi, Leandro [UNESP]
Gomes, Giovanna Larissa Gimenes Cotrick [UNESP]
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv De Freitas E Silva, Ilca Puertas [UNESP]
Carbonari, Caio Antonio [UNESP]
Velini, Edivaldo Domingues [UNESP]
Silva, Josué Ferreira [UNESP]
Tropaldi, Leandro [UNESP]
Gomes, Giovanna Larissa Gimenes Cotrick [UNESP]
dc.subject.por.fl_str_mv Gossypium hirsutum
Herbicide
Mode of action
Weeds
topic Gossypium hirsutum
Herbicide
Mode of action
Weeds
description Glufosinate ammonium, an inhibitor of the enzyme glutamine synthetase (GS), is one of the most important herbicides for cotton cultivation and it is utilized for weed management in directed spray applications indicated for conventional cultivars. This study aimed to evaluate the absorption velocity of glufosinate ammonium and its effects on weed and cotton (Gossypium hirsutum L.) plants. The study was carried out in a greenhouse with the cotton cultivar FiberMax 910 and the weeds Brachiaria decumbens and Ipomoea grandifolia. The experimental design was completely randomized and treatments were: the herbicide glufosinate ammonium (0.4 kg a.i. ha-1); five periods before a simulated rain (times for absorption) (1, 3, 6, 24 and 48 h between herbicide application and simulated rain); a control without herbicide; and four repetitions per treatment. Plants were harvested 2 d after herbicide application to quantify their contents of ammonia, glutamine and glufosinate. Visual injury of plants was quantified at 1, 3, 6, 8 and 10 d after application (DAA) of glufosinate ammonium using a percentage scale for damages. Regression analyses were performed on the results and a standard error (by t test; p≤0.05) was established for the means. Glufosinate ammonium absorption increased up to 24 h in cotton, and 48 h in B. decumbens and I. grandifolia. Despite the increase in glufosinate levels in 48 h without rain periods, the contents of ammonia were increased and glutamine was reduced between 1 and 6 h without rains. In addition, the three species presented severe injuries starting at 3 h without rain.
publishDate 2016
dc.date.none.fl_str_mv 2016-01-01
2022-04-29T18:36:17Z
2022-04-29T18:36:17Z
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 Agrociencia, v. 50, n. 2, p. 239-249, 2016.
1405-3195
http://hdl.handle.net/11449/232509
2-s2.0-84960476625
identifier_str_mv Agrociencia, v. 50, n. 2, p. 239-249, 2016.
1405-3195
2-s2.0-84960476625
url http://hdl.handle.net/11449/232509
dc.language.iso.fl_str_mv eng
spa
language eng
spa
dc.relation.none.fl_str_mv Agrociencia
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 239-249
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_ 1808128458370318336