How to Manage Pests
Pests in Gardens and Landscapes
Measles—Fungi in the genera Fomes, Cephalosporium,
Grapes that have been infected with measles display small chlorotic interveinal areas on leaves. Dark
red margins may surround the dead interveinal areas for some varieties. Severely affected leaves may
drop and canes may die back from the tips. On berries, small, round, dark spots, each bordered by a brown
purple ring, may occur. Berries may crack and dry on the vine.
It is assumed that measles is caused by wood-rotting fungi that gain entrance through large pruning
wounds. There are no recommended treatments at this time.