Photo 1. Leaf spots of Colletotrichum gloeosporioides with typical yellow margins (haloes), expanding, and in some cases developing into a severe blight resulting in early death of the leaves.
Photo 2. Only leaf veins of some yam varieties are infected by Colletotrichum gloeosporioides, and this happens when the leaves are young. As the leaves expand the damage causes them to become boat-shaped.
Yam dieback, yam anthracnose, lightening disease of yam
Glomerella cingulata (it also has the name of Colletotrichum gloeosporioides). Glomerella is the sexual state of the fungus.
AUTHORS Helen Tsatsia & Grahame Jackson
Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.
This mini fact sheet is a part of the app Pacific Pests and Pathogens
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