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Lily anthracnose (Colletotrichum liliacearum Ferr.

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It mainly damages the bulbs, but also infects the leaves and flowers. After the bulbs are infected, irregular, light brown spots appear at first, then turn light blackish brown and slightly sunken, and finally the lesions become almost black, with the tissue shrinking and dry-rotting. The outer bulb scales are damaged most severely, and the damage gradually spreads inward. When the leaves are infected, oval, pale yellow lesions appear, with dark brown, slightly sunken edges. The lily anthracnose pathogen overwinters as mycelium in the affected parts, and produces conidia the following year, which spread by wind and rain. Plots with heavy, clayey soil and high water content; plots with many lily mites;

It mainly damages the bulbs, but also infects the leaves and flowers. After the bulbs are infected, irregular, light brown spots appear at first, then turn light blackish brown and slightly sunken, and finally the lesions become almost black, with the tissue shrinking and dry-rotting. The outer bulb scales are damaged most severely, and the damage gradually spreads inward. When the leaves are infected, oval, pale yellow lesions appear, with dark brown, slightly sunken edges.

The lily anthracnose pathogen overwinters as mycelium in the affected parts, and produces conidia the following year, which spread by wind and rain. Plots with heavy, clayey soil and high water content; plots with many lily mites; and plots cropped continuously for years with large amounts of diseased plant debris all show relatively severe disease.

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