Irregular brown to reddish spots develop between veins and along margins.
Infected leaves turn yellow and drop prematurely.
Use chlorothalonil, copper products, mancozeb, maneb, myclobutanil, propiconazole, sulfur, thiophanate-methyl or triadimefon. Small, irregular spots that become shiny, tan to black and raised. Some varieties have resistance. Mancozeb may be used. Initially, infected trees have scattered dead branches.