Results of the 2014 surveys on Ralstonia solanacearum and Clavibacter michiganensis subsp. sepedonicus in Latvia
The official surveys for potato bacteria which were conducted in 2014 in Latvia confirmed the absence of Ralstonia solanacearum (EPPO A2 List) and the limited distribution of Clavibacter michiganensis subsp. sepedonicus (EPPO A2 List). All farms producing certified seed potatoes were surveyed, and all potato lots were visually inspected and sampled. Approximately 25% of the registered ware potato farms (as well as farms producing potatoes for industrial purposes) were surveyed, and all potato lots were inspected and sampled. C. michiganensis subsp. sepedonicus was detected in the following regions: Kurzeme (7 cases), Zemgale (2 cases), Latgale (3 cases), Vidzeme (2 cases), Riga (2 cases); the total infected area is estimated to cover approximately 32 ha.
The situation of Ralstonia solanacearum in Latvia can be described as follows: Absent, confirmed by survey.
The situation of Clavibacter michiganensis subsp. sepedonicus in Latvia can be described as follows: Present, restricted distribution, under official control.
NPPO of Latvia (2015-06).