Potato leafroll—Potato leafroll virus
Plants with leafroll infections typically are stunted and may appear erect. Leaves roll upward at the margins, have a stiff leathery texture, may be chlorotic, and die prematurely. Potato leafroll virus can also cause necrotic netting in the tuber vascular tissue of some varieties.
Although leafroll is transmitted by aphids, control of aphids once present will not prevent disease. Use of reflective mulches to repel aphids may help. Use certified seed pieces. Avoid saving seed potatoes from gardens. Use resistant potato varieties. Remove and destroy any infected plants to help control virus spread. Brown areas in tubers can be cut away before eating, if desired.
Rolling of leaf infected with potato leafroll
Necrotic netting in tuber vascular tissue