Desempenho de fungicidas no controle da mancha-de-macrospora na cultura do milho

Detalhes bibliográficos
Autor(a) principal: Bampi, Daiana [UNESP]
Data de Publicação: 2012
Outros Autores: Casa, Ricardo Trezzi, Bogo, Amauri, Sangoi, Luis, Sachs, Cristiano, Bolzan, Jonatha Marcel, Piletti, Giovani
Tipo de documento: Artigo
Idioma: eng
por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S0100-54052012000400008
http://hdl.handle.net/11449/73615
Resumo: Fungicide application is one of the control strategies of fungal diseases in corn leaves. In Brazil, there are no fungicides recorded for the control of corn macrospora leaf spot (MLS). The aim of this study was to assess the efficacy of 16 fungicides on MLS control in a protective, curative and eradicant form. Fungicides of the chemical groups of benzimidazoles, strobilurins and triazoles were used alone or in mixture, in completely randomized block design, with six replicates of five plants, totaling 30 plants per treatment. The experiments were carried out in a greenhouse with the single-cross hybrid AS 1565 in phenological stage of two to six expanded leaves, using an isolate of S. macrospsora from the same hybrid. The inoculum was deposited into the cartridge of plants at 48 hours after, 48 hours before and 10 days before fungicide applications for preventive, curative and eradicant action, respectively. The experiment was repeated twice. The data underwent analysis of variance (p<0.05), and the means of treatments were compared by using the Scott-Knott test (p<0.05). Severity was estimated at 21 days after inoculations. All fungicides significantly differed from the control treatment in the preventive, curative and eradicant action. For the preventive action, mean disease control was 85%. The mixture of triazoles plus strobilurins controlled, on average, 75% of the disease severity, while the isolated products such as strobilurins reduced it by 62%, benzimidazoles by 55% and triazoles by 38% for the curative action. The lowest control was obtained for the eradicant action, with mean reduction of 40.1% in the disease severity and no significant difference among fungicides.
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spelling Desempenho de fungicidas no controle da mancha-de-macrospora na cultura do milhoFungicide performance on the control of macrospora leaf spot in cornChemical controlDiplodiaStenocarpella macrosporaZea maysFungicide application is one of the control strategies of fungal diseases in corn leaves. In Brazil, there are no fungicides recorded for the control of corn macrospora leaf spot (MLS). The aim of this study was to assess the efficacy of 16 fungicides on MLS control in a protective, curative and eradicant form. Fungicides of the chemical groups of benzimidazoles, strobilurins and triazoles were used alone or in mixture, in completely randomized block design, with six replicates of five plants, totaling 30 plants per treatment. The experiments were carried out in a greenhouse with the single-cross hybrid AS 1565 in phenological stage of two to six expanded leaves, using an isolate of S. macrospsora from the same hybrid. The inoculum was deposited into the cartridge of plants at 48 hours after, 48 hours before and 10 days before fungicide applications for preventive, curative and eradicant action, respectively. The experiment was repeated twice. The data underwent analysis of variance (p<0.05), and the means of treatments were compared by using the Scott-Knott test (p<0.05). Severity was estimated at 21 days after inoculations. All fungicides significantly differed from the control treatment in the preventive, curative and eradicant action. For the preventive action, mean disease control was 85%. The mixture of triazoles plus strobilurins controlled, on average, 75% of the disease severity, while the isolated products such as strobilurins reduced it by 62%, benzimidazoles by 55% and triazoles by 38% for the curative action. The lowest control was obtained for the eradicant action, with mean reduction of 40.1% in the disease severity and no significant difference among fungicides.Doutoranda do Curso de Proteção de Plantas Universidade Estadual Paulista Júlio de Mesquita Filho UNESP, Câmpus de Botucatu, SP. Av. Universitaria, 3329. Bairro: Altos do Paraiso, Cep: 18610-031 Botucatu, SPProfessores do Departamento de Agronomia Universidade do Estado de Santa Catarina UDESC, LagesMestrandos em Produção Vegetal UDESC, LagesEng. Agr. Syngenta Tangará da Serra, MTDoutoranda do Curso de Proteção de Plantas Universidade Estadual Paulista Júlio de Mesquita Filho UNESP, Câmpus de Botucatu, SP. Av. Universitaria, 3329. Bairro: Altos do Paraiso, Cep: 18610-031 Botucatu, SPUniversidade Estadual Paulista (Unesp)Universidade do Estado de Santa Catarina (UDESC)Tangará da SerraBampi, Daiana [UNESP]Casa, Ricardo TrezziBogo, AmauriSangoi, LuisSachs, CristianoBolzan, Jonatha MarcelPiletti, Giovani2014-05-27T11:27:05Z2014-05-27T11:27:05Z2012-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article319-322application/pdfhttp://dx.doi.org/10.1590/S0100-54052012000400008Summa Phytopathologica, v. 38, n. 4, p. 319-322, 2012.0100-5405http://hdl.handle.net/11449/7361510.1590/S0100-54052012000400008S0100-540520120004000082-s2.0-848732941562-s2.0-84873294156.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengporSumma Phytopathologica0,258info:eu-repo/semantics/openAccess2024-04-30T18:06:54Zoai:repositorio.unesp.br:11449/73615Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:13:14.024206Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Desempenho de fungicidas no controle da mancha-de-macrospora na cultura do milho
Fungicide performance on the control of macrospora leaf spot in corn
title Desempenho de fungicidas no controle da mancha-de-macrospora na cultura do milho
spellingShingle Desempenho de fungicidas no controle da mancha-de-macrospora na cultura do milho
Bampi, Daiana [UNESP]
Chemical control
Diplodia
Stenocarpella macrospora
Zea mays
title_short Desempenho de fungicidas no controle da mancha-de-macrospora na cultura do milho
title_full Desempenho de fungicidas no controle da mancha-de-macrospora na cultura do milho
title_fullStr Desempenho de fungicidas no controle da mancha-de-macrospora na cultura do milho
title_full_unstemmed Desempenho de fungicidas no controle da mancha-de-macrospora na cultura do milho
title_sort Desempenho de fungicidas no controle da mancha-de-macrospora na cultura do milho
author Bampi, Daiana [UNESP]
author_facet Bampi, Daiana [UNESP]
Casa, Ricardo Trezzi
Bogo, Amauri
Sangoi, Luis
Sachs, Cristiano
Bolzan, Jonatha Marcel
Piletti, Giovani
author_role author
author2 Casa, Ricardo Trezzi
Bogo, Amauri
Sangoi, Luis
Sachs, Cristiano
Bolzan, Jonatha Marcel
Piletti, Giovani
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade do Estado de Santa Catarina (UDESC)
Tangará da Serra
dc.contributor.author.fl_str_mv Bampi, Daiana [UNESP]
Casa, Ricardo Trezzi
Bogo, Amauri
Sangoi, Luis
Sachs, Cristiano
Bolzan, Jonatha Marcel
Piletti, Giovani
dc.subject.por.fl_str_mv Chemical control
Diplodia
Stenocarpella macrospora
Zea mays
topic Chemical control
Diplodia
Stenocarpella macrospora
Zea mays
description Fungicide application is one of the control strategies of fungal diseases in corn leaves. In Brazil, there are no fungicides recorded for the control of corn macrospora leaf spot (MLS). The aim of this study was to assess the efficacy of 16 fungicides on MLS control in a protective, curative and eradicant form. Fungicides of the chemical groups of benzimidazoles, strobilurins and triazoles were used alone or in mixture, in completely randomized block design, with six replicates of five plants, totaling 30 plants per treatment. The experiments were carried out in a greenhouse with the single-cross hybrid AS 1565 in phenological stage of two to six expanded leaves, using an isolate of S. macrospsora from the same hybrid. The inoculum was deposited into the cartridge of plants at 48 hours after, 48 hours before and 10 days before fungicide applications for preventive, curative and eradicant action, respectively. The experiment was repeated twice. The data underwent analysis of variance (p<0.05), and the means of treatments were compared by using the Scott-Knott test (p<0.05). Severity was estimated at 21 days after inoculations. All fungicides significantly differed from the control treatment in the preventive, curative and eradicant action. For the preventive action, mean disease control was 85%. The mixture of triazoles plus strobilurins controlled, on average, 75% of the disease severity, while the isolated products such as strobilurins reduced it by 62%, benzimidazoles by 55% and triazoles by 38% for the curative action. The lowest control was obtained for the eradicant action, with mean reduction of 40.1% in the disease severity and no significant difference among fungicides.
publishDate 2012
dc.date.none.fl_str_mv 2012-10-01
2014-05-27T11:27:05Z
2014-05-27T11:27:05Z
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/10.1590/S0100-54052012000400008
Summa Phytopathologica, v. 38, n. 4, p. 319-322, 2012.
0100-5405
http://hdl.handle.net/11449/73615
10.1590/S0100-54052012000400008
S0100-54052012000400008
2-s2.0-84873294156
2-s2.0-84873294156.pdf
url http://dx.doi.org/10.1590/S0100-54052012000400008
http://hdl.handle.net/11449/73615
identifier_str_mv Summa Phytopathologica, v. 38, n. 4, p. 319-322, 2012.
0100-5405
10.1590/S0100-54052012000400008
S0100-54052012000400008
2-s2.0-84873294156
2-s2.0-84873294156.pdf
dc.language.iso.fl_str_mv eng
por
language eng
por
dc.relation.none.fl_str_mv Summa Phytopathologica
0,258
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 319-322
application/pdf
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)
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