Abstract: Tissue isolation method was used to isolate the pathogens from the symptomatic leaves of tea which were collected from Xinchang of Zhejiang Province. These isolates were identified into Colletotrichun gloeosporioides based on its morphology, pathogenicity and rDNA ITS sequence. Fungicide sensitivity for this pathogen was tested in this study. The results showed that C. gloeosporioides is more sensitive to 250 g·L^-1 pyraclostrobin, 65% zineb, 45% prochloraz, 250 g·L^-1 propiconazole and 70% thiophanate-methyl (EC₅₀<1 mg·L^-1), followed by 325 g·L^-1 difenoconazole·azoxystrobin, 10% difenoconazole, 430 g·L^-1 tebuconazole, 38% pyraclostrobin·boscalid and 10% hexaconazole (1 mg·L^-1<EC₅₀<10 mg·L^-1). The sensitivity of C. gloeosporioides to 12.5% diniconazole, 25 g·L^-1 fludioxonil and 42.8% fluopyram·trifloxystrobin were lower than the others (EC₅₀>10 mg·L^-1). Moreover, the mycelium of C. gloeosporioides can growth well with 50% carbendazim and 50% boscalid.

Key words: Xinchang, C. gloeosporioides, fungicides susceptibility, pyraclostrobin