Actinopelte Leaf Spot
Symptoms and damage
This fungal disease may be a serious problem in wet weather. It
is caused by the fungus Tubakiadryina (formerly calledActinopeltedryina).
The symptoms are circular, dark to reddish brown leaf spots with a diameter of
¼ to ½ inch. Spots may run together to form irregular blotches. Tiny black
specks in rings are visible in the spots and blotches. Severe infections cause
the trees to loose their leaves prematurely. Trees of low vigor, that are
repeatedly defoliated, may die.
Destruction of all infected plant material will reduce the
spread of the fungus. Small trees defoliated several years in a row may need
spraying. Apply mancozeb, chlorothalonil, thiophanate-methyl or a copper
fungicide according to the instructions on the labels. Complete coverage is
necessary for control.
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