Johnson, Dennis A.

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Causes, symptoms, and management for potato leaf roll, a viral disease which is particularly problematic in the production of late potatoes. Replaces EM2704. ...

This fact sheet outlines the disease cycle of ring rot, and approaches for sanitation and control by commercial potato growers and seed potato growers alike. ...

Describes the symptoms and damage caused by silver scurf, a fungal disease of potatoes. Includes color photos of symptoms. Discusses sources of inoculum and the disease life cycle. Suggests managemen ...

Bacterial lenticel spot is one manifestation of bacterial soft rot on potato which is initiated at tuber lenticels. Soft rot is a wet, mushy rot of plant tissues that progresses rapidly, especially wh ...