Abstract ▼ AI-Helper

Colletothrichum spp. causes anthracnose and is one of the main diseases of the persimmon tree. This study tested the sensitivity variation of methyl benzimidazole carbamates (MBC), dithio-carbamates and relatives (DMI), demethylation inhibitors, quinone outside inhibitors (QoI) and mixtures against ...

Colletothrichum spp. causes anthracnose and is one of the main diseases of the persimmon tree. This study tested the sensitivity variation of methyl benzimidazole carbamates (MBC), dithio-carbamates and relatives (DMI), demethylation inhibitors, quinone outside inhibitors (QoI) and mixtures against anthracnose that was isolated from the persimmon tree from Sangju, Gyeongsangbuk-do, and Yeongdong, Chungcheongbuk-do in 2016. There were 127 separate strains in Sangju, and 148 in Yeongdong. Most of anthracnose from Sangju and all anthracnose of Yeongdong showed an inhibition rate of over 91% for MBC. 74.8% of Sangju and 62.8% of Yeongdong showed an inhibition rate of over 91% for mancozeb of dithio-carbamates and relatives. Mancozeb’s inhibition rate was less than MBC. On the other hand, propineb of dithio-carbamates and relative’s inhibition rate showed 93.7% in Sangju and 85.1% in Yeongdong. All anthracnose of Sangju and Yeongdong showed an inhibition rate of over 91% for DMI and high sensitivity. Most of anthracnose in Sangju and Yeongdong showed inhibition rate of 61-70%(22%, 22.3%). Mixtures showed high sensitivity in Sangju and Yeongdong. Sangju showed higher average value of EC50 than Yeongdong in all fungicides except mancozeb and prochloraz manganese complex. The lowest sensitivity was mancozeb in Sangju and Yeongdong. The highest sensitivity was prochloraz manganese complex in Sangju and fluquinconazole+prochloraz in Yeongdong.

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