Posts Tagged ‘potato scab’

Do your potatoes have scab on the skin?

Person Author: Lajos Szabo Calender July 5, 2012 Posted Tags: , Comment 1 Comment

Potato scab is a common disease and it is caused by a bacteria Streptomyces scabies. It lives in the soil free and attacks the potatoes in ideal conditions. Normally scab does not affect the yield but the skin becomes ugly and you might have to peel your potatoes thickly. The same bacteria attacks radish, beetroot, turnip and swede too. The bacteria invades the surface of the forming tubers and the plant develops the scabs in response, which are defend the tubers from further infection. So the scabs are basically the defence system of the plants. Resistant varieties If the infection is severe and you don't have the space to grow potatoes elsewhere or your whole plot is badly infected with the bacteria, it is worth to grow resistance varieties. King Edward, Pentland Javelin and

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