PRO/PL> Bacterial ring rot, potato – Finland

Other Plant Disease — Worldwide/Unknown
The NPPO [National Plant Protection Organisation] of Finland recently informed the EPPO Secretariat of the detection of _Clavibacter michiganensis_ subsp. _sepedonicus_ (EPPO A2 List) in ware potatoes on 2 farms.
The bacterium was detected in 2 samples of _Solanum tuberosum_ cvs. “Matilda” and “Asterix” in January and February [2013], respectively. The extent of the probable infestation has been determined as being the entire area of the 2 farms.
The origin of these infestations is not