Potato ring rot
Potato ring rot is a serious non-indigenous bacterial disease of potatoes, which is listed as a quarantine organism in the EC Plant Health Directive and is notifiable in the UK. It is caused by the bacterium Clavibacter michiganensis ssp. sepedonicus.
It has been reported in a number of countries including parts of North America and is also established in northern and eastern Europe. There had been no outbreaks in the UK prior to a finding in Wales in November 2003.
Potato ring rot has never been found in Scotland.
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