Fungicide sensitivity of Botrytis cinerea isolated from strawberry in Osaka Prefecture, Japan

Strawberry gray mold disease is one of the important diseases of strawberry caused by Botrytis cinerea. In this study, we examined the susceptibility of sixty-four isolates of this pathogen, collected from fifteen commercial strawberry fields in Osaka prefecture, Japan, to Qo inhibitor (QoI) fungicides (azoxystrobin and pyribencarb), succinate dehydrogenase inhibitor (SDHI) fungicides (penthiopyrad and pyraziflumid), methyl benzimidazole carbamate (MBC) fungicide (benomyl), dicarboximide fungicide (procymidone), phenylpyrrole fungicide (fludioxonil), and anilinopyrimidine fungicide (mepanipyrim).Most of the isolates were resistant to azoxystrobin, while being susceptible to the QoI fungicide, pyribencarb. Additionally, most isolates showed a low sensitivity to SDHI fungicides and procymidone.