Journal
CROP PROTECTION
Volume 24, Issue 3, Pages 259-266Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cropro.2004.07.014
Keywords
resistance; Mycosphaerella graminicola; fluquinconazole; prochloraz; azoxystrobin; DMIs
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The sensitivity of 73 isolates of Mycosphaerella graminicola collected over the period 1993-2002 from wheat fields in South England was tested in vitro against the triazole fluquinconazole, the strobilurin azoxystrobin and to the imidazole prochloraz. Over the sampling period, sensitivity of the population to fluquinconazole and prochloraz decreased by factors of approximately 10 and 2, respectively, but there was no evidence of changes in sensitivity to azoxystrobin. There was no correlation between sensitivity to fluquinconazole and prochloraz, but there was a weak negative cross-resistance between fluquinconazole and azoxystrobin. (C) 2004 Elsevier Ltd. All rights reserved.
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