Compendium of Potato Diseases - (PDF, 101 mb) - USAID
Compendium of Potato Diseases - (PDF, 101 mb) - USAID
Compendium of Potato Diseases - (PDF, 101 mb) - USAID
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40. Rhizoctonia black scurf. Sclerotia <strong>of</strong> R. solani on 41. Rhizoctonia canker. R. solani infection <strong>of</strong><br />
tuber surface. underground stems, sclerotia on seed tuber, and<br />
aboveground perfect stage (white area) on larger central<br />
stem. (Courtesy R. Zachmann)<br />
42. Silver scurf. Helminthospsorium solani infection <strong>of</strong> tuber.<br />
(Courtesy J. E. Huguelet)<br />
COLOR PLATES<br />
43. Black dot. Colletotrichum atramentarium<br />
on stem. (Courtesy E. R.<br />
French)