Fusarium dry rot

Fusarium dry rot of potato is a devastating post-harvest losses (vegetables) disease affecting both seed potatoes and potatoes for human consumption. Dry rot causes the skin of the tuber to wrinkle. The rotted areas of the potato may be brown, grey, or black and the rot creates depressions in the surface of the tuber. Seed pieces may rot completely before they have the chance to be planted.

The genus that causes dry rot of potato, Fusarium, is a fungus. Signs of a pathogenic Fusarium species can be seen on an infected potato, and include white or pink mycelia(masses of vegetative fungal tissue) and very colorful spores that can be blue, black, purple, grey, white, yellow, or pink.