Initially, lesions appear as brown to black flecks on the tuber surface.
Lesions later form large, hollow cavities.
Wounds are required for infection. Fusarium cannot penetrate intact tuber skin, lenticels, or suberized seed pieces. Proper handling and curing is usually sufficient to give economic control of dry rot in storage. Allow tubers to mature before harvest and prevent bruising tubers during harvest and storage operations. If possible, avoid irrigation before emergence.