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Species Allium cepa
Crop Onion
Pest Scientific Name Colletotrichum circinans
Additional Info
Complementary Info Synonym: Colletotrichum dematium f. sp. circinans
Type Fungus
Pest Classification Is seed a pathway in this crop? No
Main literature references 2-5, 2-37
Remarks C. circinans is the causal agent of smudge on onion bulbs. No references found indicating seed as a pathway for C. circinans in onion. The fungus is soilborne and spread by infested plant material and soil. <strong>Available information indicates there is no scientific basis for regulation of C. circinans on onion seed.</strong>
Detection Is there a seed test?
If yes, type of test
Main literature references
Remarks
Risk mitigation Can the pest be managed by seed treatment(s)?
If yes, what type(s)
Main literature references
Remarks

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