Frogeye Leafspot
(fungus - Cercospora sojina): This disease usually appears late in the
growing season. The fungus infects leaves, stems and pods, but is most conspicuous
on the leaf. On the leaf, it causes an "eyespot" lesion composed of a gray or
tan central area surrounded by a narrow reddish border. Badly infected leaves
fall prematurely. The fungus is seed-borne and causes weak seedlings. Control
measures include planting disease-free seed, plowing under crop residue and rotation.
Varieties vary in their resistance.
