Myclobutanil resistance in an isolate of Venturia inaequalis from New South Wales

S. D. Hetherington and D. A. Gunning

Abstract

An isolate of Venturia inaequalis from the Orange region of New South Wales had an ED₅₀ of 0.97 μg/mL for the fungicide myclobutanil. The ED₅₀ indicative of resistance to this fungicide is ≥  0.1 μg/mL. This is the first record in Australia of V. inaequalis resistant to a Demethylation Inhibitor (DMI) fungicide.

Australasian Plant Pathology 32(1) 121 - 122 (2003) doi:10.1071/AP02057