Photo 1. Distorted, torn leaves showing the brown scabby areas along the veins and leaf stalks caused by Elsinoe batatas. These are the places where the spores are produced.
Photo 2. Twisted, deformed leaves showing the undersurfaces and the brown scabby areas of Elsinoe batatas. Many of the scabs are on the leaf veins and petioles.
Elsinoe batatas, but sometimes known as Sphaceloma batatas (the asexual stage). Usually, only the asexual state is seen on the leaves.
AUTHORS Helen Tsatsia & Grahame Jackson
Photo 2 John Bokosou, NARI, Papua New Guinea.
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.
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