Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blight

Autores
De Rossi, Roberto Luis; Reis, Erlei Melo; Brustolin, Ricardo
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
Northern corn leaf blight, caused by Exserohilum turcicum (Et), is one of the major corn diseases which can reduce grain yield and quality. The aim of this study was to determine the mycelial sensitivity of ten Et isolates, five from Argentina and five from Brazil, to six fungicides (carbendazim, captan, fludioxinil, metalaxyl, iprodione and thiram) used in seed treatment. The inhibitory concentration (IC50) was determined by using seven concentrations of the fungicides supplemented to the agar medium. The mycelial colony diameter was measured with a digital caliper. Experimental design was completely randomized with four replicates. Data on the percent mycelial growth inhibition were analyzed by logarithmic regression and the IC50 was calculated. The fungicide iprodione was the most potent, with IC50 < 0.01 mg/L, followed by fludioxonil, IC50 0.31 mg/L, and thiram, 1.37 mg/L. Carbendazim, metalaxyl and captan were classified as non-fungitoxic, showing IC50 > 50 mg/L for all isolates. Although iprodione is the most potent fungicide, it is not used for corn seed treatment. The IC50s obtained in this study can be used as baseline for future monitoring studies of Et sensitivity to fungicides.
Fil: De Rossi, Roberto Luis. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; Argentina
Fuente
De Rossi, Roberto Luis ORCID: https://orcid.org/0000-0003-0130-5415 , Reis, Erlei Melo and Brustolin, Ricardo (2015) Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blight. Summa Phytopathologica, 41 (1). pp. 25-30. ISSN 0100-5405
Materia
S Agricultura (General)
SB Cultura de la planta
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
Repositorio
Producción Académica (UCC)
Institución
Universidad Católica de Córdoba
OAI Identificador
oai:pa.bibdigital.uccor.edu.ar:2257

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network_name_str Producción Académica (UCC)
spelling Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blightDe Rossi, Roberto LuisReis, Erlei MeloBrustolin, RicardoS Agricultura (General)SB Cultura de la plantaNorthern corn leaf blight, caused by Exserohilum turcicum (Et), is one of the major corn diseases which can reduce grain yield and quality. The aim of this study was to determine the mycelial sensitivity of ten Et isolates, five from Argentina and five from Brazil, to six fungicides (carbendazim, captan, fludioxinil, metalaxyl, iprodione and thiram) used in seed treatment. The inhibitory concentration (IC50) was determined by using seven concentrations of the fungicides supplemented to the agar medium. The mycelial colony diameter was measured with a digital caliper. Experimental design was completely randomized with four replicates. Data on the percent mycelial growth inhibition were analyzed by logarithmic regression and the IC50 was calculated. The fungicide iprodione was the most potent, with IC50 < 0.01 mg/L, followed by fludioxonil, IC50 0.31 mg/L, and thiram, 1.37 mg/L. Carbendazim, metalaxyl and captan were classified as non-fungitoxic, showing IC50 > 50 mg/L for all isolates. Although iprodione is the most potent fungicide, it is not used for corn seed treatment. The IC50s obtained in this study can be used as baseline for future monitoring studies of Et sensitivity to fungicides.Fil: De Rossi, Roberto Luis. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; ArgentinaAsociaci�n de Fitopatolog�a del Estado de S�o Paulo (APF)2015-01-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://pa.bibdigital.ucc.edu.ar/2257/1/A_DeRossi_Reis_Brustolin.pdf De Rossi, Roberto Luis ORCID: https://orcid.org/0000-0003-0130-5415 <https://orcid.org/0000-0003-0130-5415>, Reis, Erlei Melo and Brustolin, Ricardo (2015) Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blight. Summa Phytopathologica, 41 (1). pp. 25-30. ISSN 0100-5405 reponame:Producción Académica (UCC)instname:Universidad Católica de Córdobaenghttp://pa.bibdigital.ucc.edu.ar/2257/http://www.summanet.com.br/summanet-site/site/revista.phpinfo:eu-repo/semantics/altIdentifier/doi/10.1590/0100-5405/1931info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es2025-09-29T14:29:15Zoai:pa.bibdigital.uccor.edu.ar:2257instacron:UCCInstitucionalhttp://pa.bibdigital.uccor.edu.ar/Universidad privadaNo correspondehttp://pa.bibdigital.uccor.edu.ar/cgi/oai2bibdir@uccor.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:27182025-09-29 14:29:15.843Producción Académica (UCC) - Universidad Católica de Córdobafalse
dc.title.none.fl_str_mv Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blight
title Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blight
spellingShingle Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blight
De Rossi, Roberto Luis
S Agricultura (General)
SB Cultura de la planta
title_short Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blight
title_full Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blight
title_fullStr Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blight
title_full_unstemmed Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blight
title_sort Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blight
dc.creator.none.fl_str_mv De Rossi, Roberto Luis
Reis, Erlei Melo
Brustolin, Ricardo
author De Rossi, Roberto Luis
author_facet De Rossi, Roberto Luis
Reis, Erlei Melo
Brustolin, Ricardo
author_role author
author2 Reis, Erlei Melo
Brustolin, Ricardo
author2_role author
author
dc.subject.none.fl_str_mv S Agricultura (General)
SB Cultura de la planta
topic S Agricultura (General)
SB Cultura de la planta
dc.description.none.fl_txt_mv Northern corn leaf blight, caused by Exserohilum turcicum (Et), is one of the major corn diseases which can reduce grain yield and quality. The aim of this study was to determine the mycelial sensitivity of ten Et isolates, five from Argentina and five from Brazil, to six fungicides (carbendazim, captan, fludioxinil, metalaxyl, iprodione and thiram) used in seed treatment. The inhibitory concentration (IC50) was determined by using seven concentrations of the fungicides supplemented to the agar medium. The mycelial colony diameter was measured with a digital caliper. Experimental design was completely randomized with four replicates. Data on the percent mycelial growth inhibition were analyzed by logarithmic regression and the IC50 was calculated. The fungicide iprodione was the most potent, with IC50 < 0.01 mg/L, followed by fludioxonil, IC50 0.31 mg/L, and thiram, 1.37 mg/L. Carbendazim, metalaxyl and captan were classified as non-fungitoxic, showing IC50 > 50 mg/L for all isolates. Although iprodione is the most potent fungicide, it is not used for corn seed treatment. The IC50s obtained in this study can be used as baseline for future monitoring studies of Et sensitivity to fungicides.
Fil: De Rossi, Roberto Luis. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; Argentina
description Northern corn leaf blight, caused by Exserohilum turcicum (Et), is one of the major corn diseases which can reduce grain yield and quality. The aim of this study was to determine the mycelial sensitivity of ten Et isolates, five from Argentina and five from Brazil, to six fungicides (carbendazim, captan, fludioxinil, metalaxyl, iprodione and thiram) used in seed treatment. The inhibitory concentration (IC50) was determined by using seven concentrations of the fungicides supplemented to the agar medium. The mycelial colony diameter was measured with a digital caliper. Experimental design was completely randomized with four replicates. Data on the percent mycelial growth inhibition were analyzed by logarithmic regression and the IC50 was calculated. The fungicide iprodione was the most potent, with IC50 < 0.01 mg/L, followed by fludioxonil, IC50 0.31 mg/L, and thiram, 1.37 mg/L. Carbendazim, metalaxyl and captan were classified as non-fungitoxic, showing IC50 > 50 mg/L for all isolates. Although iprodione is the most potent fungicide, it is not used for corn seed treatment. The IC50s obtained in this study can be used as baseline for future monitoring studies of Et sensitivity to fungicides.
publishDate 2015
dc.date.none.fl_str_mv 2015-01-16
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
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info:ar-repo/semantics/articulo
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://pa.bibdigital.ucc.edu.ar/2257/1/A_DeRossi_Reis_Brustolin.pdf
url http://pa.bibdigital.ucc.edu.ar/2257/1/A_DeRossi_Reis_Brustolin.pdf
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://pa.bibdigital.ucc.edu.ar/2257/
http://www.summanet.com.br/summanet-site/site/revista.php
info:eu-repo/semantics/altIdentifier/doi/10.1590/0100-5405/1931
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Asociaci�n de Fitopatolog�a del Estado de S�o Paulo (APF)
publisher.none.fl_str_mv Asociaci�n de Fitopatolog�a del Estado de S�o Paulo (APF)
dc.source.none.fl_str_mv De Rossi, Roberto Luis ORCID: https://orcid.org/0000-0003-0130-5415 <https://orcid.org/0000-0003-0130-5415>, Reis, Erlei Melo and Brustolin, Ricardo (2015) Fungicide baseline for mycelial sensitivity of Exserohilum turcicum, causal agent of northern corn leaf blight. Summa Phytopathologica, 41 (1). pp. 25-30. ISSN 0100-5405
reponame:Producción Académica (UCC)
instname:Universidad Católica de Córdoba
reponame_str Producción Académica (UCC)
collection Producción Académica (UCC)
instname_str Universidad Católica de Córdoba
repository.name.fl_str_mv Producción Académica (UCC) - Universidad Católica de Córdoba
repository.mail.fl_str_mv bibdir@uccor.edu.ar
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