Herbicide performance in the control of Conyza spp. where three plant heights

Detalhes bibliográficos
Autor(a) principal: Theodoro Schneider
Data de Publicação: 2021
Outros Autores: Nicolodi Camera, Juliane, Koefender, Jana, Rizzardi, Mauro Antônio, Bianchi, Mario Antônio, Rockenbach, Ana Paula
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Bioscience journal (Online)
Texto Completo: https://seer.ufu.br/index.php/biosciencejournal/article/view/53718
Resumo: Intensive use of the herbicide glyphosate has led to herbicide resistant Conyza spp. populations. Thus, there is a need to indicate alternative herbicides and the appropriate developmental stage for controlling these populations. This study identifies alternatives for controlling glyphosate-resistant horseweed, with treatment applications at different plant heights. For this purpose, field experiments were conducted in the 2016/17 and 2017/18 crop years. The evaluated treatments were: glyphosate (540 g ae ha-1), glyphosate (1080 g ae ha-1), glyphosate (2160 g ae ha-1), glyphosate (3240 g ae ha-1), glyphosate + 2.4-D (1080 + 1005 g ae ha-1), glyphosate + saflufenacil (1080 + 49 g ae/ai ha-1), paraquat (400 g ai ha-1), diquat (400 g ai ha-1), ammonium glufosinate (600 g ai ha-1), and control (without application). These treatments were applied to plants with a maximum of 5 cm; plants between 6 and 15 cm; and plants between 16 and 25 cm. The results showed that glyphosate did not control weeds, regardless of rate. With the exception of 2,4-D, which needs complementation with sequential application of another contact herbicide, all alternatives were viable for the control of Conyza spp. plants with a maximum height of 5 cm.
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spelling Herbicide performance in the control of Conyza spp. where three plant heightsAlternative Chemical ControlApplication Growth StageHorseweedResistance.Agricultural SciencesIntensive use of the herbicide glyphosate has led to herbicide resistant Conyza spp. populations. Thus, there is a need to indicate alternative herbicides and the appropriate developmental stage for controlling these populations. This study identifies alternatives for controlling glyphosate-resistant horseweed, with treatment applications at different plant heights. For this purpose, field experiments were conducted in the 2016/17 and 2017/18 crop years. The evaluated treatments were: glyphosate (540 g ae ha-1), glyphosate (1080 g ae ha-1), glyphosate (2160 g ae ha-1), glyphosate (3240 g ae ha-1), glyphosate + 2.4-D (1080 + 1005 g ae ha-1), glyphosate + saflufenacil (1080 + 49 g ae/ai ha-1), paraquat (400 g ai ha-1), diquat (400 g ai ha-1), ammonium glufosinate (600 g ai ha-1), and control (without application). These treatments were applied to plants with a maximum of 5 cm; plants between 6 and 15 cm; and plants between 16 and 25 cm. The results showed that glyphosate did not control weeds, regardless of rate. With the exception of 2,4-D, which needs complementation with sequential application of another contact herbicide, all alternatives were viable for the control of Conyza spp. plants with a maximum height of 5 cm.O uso intensivo do herbicida glifosato selecionou populações de Conyza spp. resistentes a este herbicida, desta forma, existe a necessidade da indicação de herbicidas alternativos bem como o estádio de desenvolvimento adequado para o controle dessas populações. Objetivou-se identificar alternativas para o controle de buva resistente ao glifosato, aplicadas em diferentes estaturas da planta daninha. Para isso, foram conduzidos experimentos a campo, nos anos agrícolas 2016/17 e 2017/18. Os tratamentos avaliados foram: glifosato (540 g e.a. ha-1), glifosato (1080 g e.a. ha-1), glifosato (2160 g e.a. ha-1), glifosato (3240 g e.a. ha-1), glifosato + 2,4-D (1080 + 1005 g e.a. ha-1), glifosato + saflufenacil (1080 + 49 g e.a./i.a. ha-1), paraquate (400 g i.a. ha-1), diquate (400 g i.a. ha-1), Glufosinato de amônio (600 g i.a. ha-1) e testemunha sem aplicação, aplicados nas plantas com no máximo 5 cm; plantas entre 6 e 15 cm; e plantas entre 16 e 25 cm. Os resultados evidenciaram que nenhuma dose do glifosato controlou as plantas daninhas, e com exceção do 2,4-D que necessita de complemento com aplicação sequencial de outro herbicida de contato, todas as alternativas apresentaram-se viáveis para o controle de plantas de Conyza spp. com no máximo 5 cm de estatura.EDUFU2021-12-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/5371810.14393/BJ-v37n0a2021-53718Bioscience Journal ; Vol. 37 (2021): Continuous Publication; e37091Bioscience Journal ; v. 37 (2021): Continuous Publication; e370911981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/53718/33015Brazil; Contemporary Copyright (c) 2021 Theodoro Schneider, Juliane Nicolodi Camera, Jana Koefender, Mauro Antônio Rizzardi, Mario Antônio Bianchi, Ana Paula Rockenbachhttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessTheodoro SchneiderNicolodi Camera, JulianeKoefender, JanaRizzardi, Mauro AntônioBianchi, Mario AntônioRockenbach, Ana Paula 2022-05-25T13:36:00Zoai:ojs.www.seer.ufu.br:article/53718Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-05-25T13:36Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false
dc.title.none.fl_str_mv Herbicide performance in the control of Conyza spp. where three plant heights
title Herbicide performance in the control of Conyza spp. where three plant heights
spellingShingle Herbicide performance in the control of Conyza spp. where three plant heights
Theodoro Schneider
Alternative Chemical Control
Application Growth Stage
Horseweed
Resistance.
Agricultural Sciences
title_short Herbicide performance in the control of Conyza spp. where three plant heights
title_full Herbicide performance in the control of Conyza spp. where three plant heights
title_fullStr Herbicide performance in the control of Conyza spp. where three plant heights
title_full_unstemmed Herbicide performance in the control of Conyza spp. where three plant heights
title_sort Herbicide performance in the control of Conyza spp. where three plant heights
author Theodoro Schneider
author_facet Theodoro Schneider
Nicolodi Camera, Juliane
Koefender, Jana
Rizzardi, Mauro Antônio
Bianchi, Mario Antônio
Rockenbach, Ana Paula
author_role author
author2 Nicolodi Camera, Juliane
Koefender, Jana
Rizzardi, Mauro Antônio
Bianchi, Mario Antônio
Rockenbach, Ana Paula
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Theodoro Schneider
Nicolodi Camera, Juliane
Koefender, Jana
Rizzardi, Mauro Antônio
Bianchi, Mario Antônio
Rockenbach, Ana Paula
dc.subject.por.fl_str_mv Alternative Chemical Control
Application Growth Stage
Horseweed
Resistance.
Agricultural Sciences
topic Alternative Chemical Control
Application Growth Stage
Horseweed
Resistance.
Agricultural Sciences
description Intensive use of the herbicide glyphosate has led to herbicide resistant Conyza spp. populations. Thus, there is a need to indicate alternative herbicides and the appropriate developmental stage for controlling these populations. This study identifies alternatives for controlling glyphosate-resistant horseweed, with treatment applications at different plant heights. For this purpose, field experiments were conducted in the 2016/17 and 2017/18 crop years. The evaluated treatments were: glyphosate (540 g ae ha-1), glyphosate (1080 g ae ha-1), glyphosate (2160 g ae ha-1), glyphosate (3240 g ae ha-1), glyphosate + 2.4-D (1080 + 1005 g ae ha-1), glyphosate + saflufenacil (1080 + 49 g ae/ai ha-1), paraquat (400 g ai ha-1), diquat (400 g ai ha-1), ammonium glufosinate (600 g ai ha-1), and control (without application). These treatments were applied to plants with a maximum of 5 cm; plants between 6 and 15 cm; and plants between 16 and 25 cm. The results showed that glyphosate did not control weeds, regardless of rate. With the exception of 2,4-D, which needs complementation with sequential application of another contact herbicide, all alternatives were viable for the control of Conyza spp. plants with a maximum height of 5 cm.
publishDate 2021
dc.date.none.fl_str_mv 2021-12-29
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://seer.ufu.br/index.php/biosciencejournal/article/view/53718
10.14393/BJ-v37n0a2021-53718
url https://seer.ufu.br/index.php/biosciencejournal/article/view/53718
identifier_str_mv 10.14393/BJ-v37n0a2021-53718
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.ufu.br/index.php/biosciencejournal/article/view/53718/33015
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv Brazil; Contemporary
dc.publisher.none.fl_str_mv EDUFU
publisher.none.fl_str_mv EDUFU
dc.source.none.fl_str_mv Bioscience Journal ; Vol. 37 (2021): Continuous Publication; e37091
Bioscience Journal ; v. 37 (2021): Continuous Publication; e37091
1981-3163
reponame:Bioscience journal (Online)
instname:Universidade Federal de Uberlândia (UFU)
instacron:UFU
instname_str Universidade Federal de Uberlândia (UFU)
instacron_str UFU
institution UFU
reponame_str Bioscience journal (Online)
collection Bioscience journal (Online)
repository.name.fl_str_mv Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)
repository.mail.fl_str_mv biosciencej@ufu.br||
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