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| Powdery Scab |
Powdery scab is caused by a fungus and generally affects potatoes and tomatoes and is generally more prevalent in damp conditions.
The scabs burst open producing masses of dusty brown spores, for which there are no effective controls for.
Light attacks do not tend to damage the tubers too much however severe attacks can render them unfit to eat.
There are no other effective controls for powdery scab, the best control is to practise crop rotation, and only plant unblemished disease free seed potatoes.
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