Effect of fungicides on infection of apricot and cherry pruning wounds inoculated with Chondrostereum purpureum

Abstract

Wound protectants were evaluated on apricot and cherry by the inoculation of pruning wounds with-basidiospores of Chondrostereum purpureum within an hour of applying the protectant. Agseal (1% captafol and 1 % chinosol suspended in a polyvinyl acetate based paint) protected 100% of the cherry and 84% of the apricot wounds from infection and was more effective than a water suspension of 250 mg/litre captafol. Water suspensions of triadimefon at 25 mg/litre and oxycarboxin at 250 mg/litre were not effective, as greater than 70% of these treated wounds yielded the fungus. Neither Agseal nor 104 mg/litre of captafol was effective when applied 27 h after inoculation.Apricot and cherry wounds untreated or treated with Agseal at pruning were not infected by C. purpureum when inoculated more than 7 d after pruning.