Colletotrichum coccodes
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Sugar beets (Beta vulgaris) - left: infected with Colletotrichum coccodes - right: uninfected
Authors: L.E. Hanson et al. - New Disease Reports (2022), vol. 46 (2) art. e12135
Authors: L.E. Hanson et al. - New Disease Reports (2022), vol. 46 (2) art. e12135
Colletotrichum coccodes (Wallr.) S. Hughes 1958
The fungus is wide-spread and infects various crops. Probably the most important disease is potato black dot during which necrotic lesions and microsclerotia develop on the tuber surface. Up to about half of the tubers may be unmarketable in affected fields.
The fungus can be introduced into a field through seed potatoes and the microsclerotia can survive in the soil for at least 8 years. Control options include resistant cultivars and avoiding excessive irrigation. The species is closely related to Colletotrichum nigrum.
Synonyms:
Colletotrichum atramentarium
