In vitro bioassay for fungicide resistance in Penicillium digitatum. Agar plug containing 24-hour-old germlings of Penicillium digitatum, was transferred to the center of a Petri dish containing imazalil-amended potato dextrose agar. After 5 days incubation at 25oC, the imazalil-sensitive isolate has not grown beyond the initial inoculum plug. October 1990
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