Grower should consult seed catalogs for current information on resistant varieties. Destroy residues after harvest. Spray or dust plants when rust appears and repeat at seven-day intervals. Pre-emergence death of seeds. Sclerotinia sclerotiorum 1.
Young plants have watery, soft lesions near cotyledonary node.
Older plants have soft lesions on stems, petioles, leaves or pods. White mat-like mycelium develops in older, rotted tissues. Plant in well-drained soils not recently used for beans, potatoes, tomatoes, lettuce or cabbage. For snap beans only. Apply fungicide 25 percent to 50 percent bloom and repeat at peak bloom.