ABSTRACT
Symptoms and diagnostic features Initial symptoms consist of water-soaked, irregularly shaped spots that measure 2-5 mm in diameter (508). As the disease develops, these small spots enlarge to as much as 10-15 mm in diameter, are angular in shape due to delimiting from leaf veins, and turn dark brown with streaks of black (509). On occasion, faint yellow halos surround the spots. On leaves having numerous spots, the spots sometimes merge together, resulting in the death of large areas of the leaf (510). Spots are visible from both top and bottom sides of leaves. The disease occurs on both newly expanded and mature foliage.
