Effectiveness of isofetamid, a new succinate dehydrogenase inhibitor fungicide, in the control of grapevine gray mold

Gray mold is an important disease in grapevines in Chile, and its control depends primarily on the use of fungicides with a single-site mode of action. Botrytis cinerea has a high risk of developing resistance against such fungicides. Therefore, novel chemical options are needed to achieve satisfact...

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Autores principales:	Piqueras,Carlos M, Latorre,Bernardo A, Torres,René
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2014
Materias:	chemical control fenhexamid fungicides isofetamid SDHI Vitis vinifera
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000300009
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spelling	oai:scielo:S0718-162020140003000092015-02-25Effectiveness of isofetamid, a new succinate dehydrogenase inhibitor fungicide, in the control of grapevine gray moldPiqueras,Carlos MLatorre,Bernardo ATorres,René chemical control fenhexamid fungicides isofetamid SDHI Vitis vinifera Gray mold is an important disease in grapevines in Chile, and its control depends primarily on the use of fungicides with a single-site mode of action. Botrytis cinerea has a high risk of developing resistance against such fungicides. Therefore, novel chemical options are needed to achieve satisfactory control of gray mold. Isofetamid is a new succinate dehydrogenase inhibitor (SDHI) fungicide with a single-site of action that inhibits cellular respiration and appears to be a new option in the chemical treatment against gray mold. The aim of this study was to determine the effectiveness of isofetamid in controlling grapevine gray mold in Chile. Field trials undertaken in three different commercial vineyards showed that isofetamid controls gray mold to a similar extent as fenhexamid. During 2012 and 2013, 10 B. cinerea isolates were obtained from commercial vineyards in central Chile to determine their sensitivity to isofetamid. The median inhibitory concentration of isofetamid varied between 0.3-10.0 μg mL-1 and 0.6 to >10 μg mL-1 for mycelium and conidia, respectively. The efficacy of isofetamid against B. cinerea in apple bioassays varied between 61-100% and 37.5-100% for mycelium and conidia, respectively. The results of this study demonstrate that isofetamid is a highly effective fungicide against B. cinerea.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.41 n.3 20142014-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000300009en10.4067/S0718-16202014000300009
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	chemical control fenhexamid fungicides isofetamid SDHI Vitis vinifera
spellingShingle	chemical control fenhexamid fungicides isofetamid SDHI Vitis vinifera Piqueras,Carlos M Latorre,Bernardo A Torres,René Effectiveness of isofetamid, a new succinate dehydrogenase inhibitor fungicide, in the control of grapevine gray mold
description	Gray mold is an important disease in grapevines in Chile, and its control depends primarily on the use of fungicides with a single-site mode of action. Botrytis cinerea has a high risk of developing resistance against such fungicides. Therefore, novel chemical options are needed to achieve satisfactory control of gray mold. Isofetamid is a new succinate dehydrogenase inhibitor (SDHI) fungicide with a single-site of action that inhibits cellular respiration and appears to be a new option in the chemical treatment against gray mold. The aim of this study was to determine the effectiveness of isofetamid in controlling grapevine gray mold in Chile. Field trials undertaken in three different commercial vineyards showed that isofetamid controls gray mold to a similar extent as fenhexamid. During 2012 and 2013, 10 B. cinerea isolates were obtained from commercial vineyards in central Chile to determine their sensitivity to isofetamid. The median inhibitory concentration of isofetamid varied between 0.3-10.0 μg mL-1 and 0.6 to >10 μg mL-1 for mycelium and conidia, respectively. The efficacy of isofetamid against B. cinerea in apple bioassays varied between 61-100% and 37.5-100% for mycelium and conidia, respectively. The results of this study demonstrate that isofetamid is a highly effective fungicide against B. cinerea.
author	Piqueras,Carlos M Latorre,Bernardo A Torres,René
author_facet	Piqueras,Carlos M Latorre,Bernardo A Torres,René
author_sort	Piqueras,Carlos M
title	Effectiveness of isofetamid, a new succinate dehydrogenase inhibitor fungicide, in the control of grapevine gray mold
title_short	Effectiveness of isofetamid, a new succinate dehydrogenase inhibitor fungicide, in the control of grapevine gray mold
title_full	Effectiveness of isofetamid, a new succinate dehydrogenase inhibitor fungicide, in the control of grapevine gray mold
title_fullStr	Effectiveness of isofetamid, a new succinate dehydrogenase inhibitor fungicide, in the control of grapevine gray mold
title_full_unstemmed	Effectiveness of isofetamid, a new succinate dehydrogenase inhibitor fungicide, in the control of grapevine gray mold
title_sort	effectiveness of isofetamid, a new succinate dehydrogenase inhibitor fungicide, in the control of grapevine gray mold
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000300009
work_keys_str_mv	AT piquerascarlosm effectivenessofisofetamidanewsuccinatedehydrogenaseinhibitorfungicideinthecontrolofgrapevinegraymold AT latorrebernardoa effectivenessofisofetamidanewsuccinatedehydrogenaseinhibitorfungicideinthecontrolofgrapevinegraymold AT torresrene effectivenessofisofetamidanewsuccinatedehydrogenaseinhibitorfungicideinthecontrolofgrapevinegraymold
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Effectiveness of isofetamid, a new succinate dehydrogenase inhibitor fungicide, in the control of grapevine gray mold

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