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Species Cucurbita spp.
Crop Squash and pumpkin
Pest Scientific Name Colletotrichum orbiculare
Additional Info
Complementary Info Synonym: Colletotrichum lagenarium, Teleomorph: Glomorella lagenaria
Type Fungus
Pest Classification Is seed a pathway in this crop? Pathway not proven
Main literature references 8-19, 8-41, 8-89, 8-90, 8-151, 8-181
Remarks Causal agent of anthracnose in cucurbits. Squash and pumpkin are less susceptible than watermelon, melon and cucumber. Seed as a pathway has been proven for cucumber, however, no direct references on Cucurbita spp were found. Numerous references simply suggest that seed is a pathway in Cucurbita spp. but no data is supplied. The current practices in seed production would greatly reduce the potential for seed contamination. Avoiding infected fruit at harvest, cleaning and sanitization of Cucurbita spp. seed are practices that are routinely applied. The perfect stage of Colletotrichum orbiculare is rarely found in nature.
Detection Is there a seed test? Yes
If yes, type of test Incubation
Main literature references 8-42, 8-43
Remarks There is a NSHS accredited method which is available in some commercial labs.
Risk mitigation Can the pest be managed by seed treatment(s)? Yes
If yes, what type(s) Physical, Chemical (seed coating)
Main literature references 8-48, 8-51
Remarks Seed treatment with fungicides is effective against the fungus.

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