Elongated or circular brown to gray spots on the leaves with yellow borders. Whole leaflets may be killed and petioles girdled. Floral parts may be affected, resulting in infected seeds. Use disease-free seed. Fall plowing to cover crop residues may be desirable.
Check catalogs for partial tolerance in some varieties.
Fungicide sprays 3 to 4 times, starting early. May cause seedling loss and stalk blight in early season. Dark spots on leaves and petioles, causing yellowing and death to leaves. May kill entire leaflet. Leaf symptoms similar to Cercospora leaf spot, but occur later in season.