Survey on Ralstonia solanacearum and Clavibacter michiganensis subsp. sepedonicus in Latvia
A survey was conducted in 1998 in Latvia on Ralstonia solanacearum and Clavibacter michiganensis subsp. sepedonicus (both EPPO A2 quarantine pests). In total, 162 samples of seed potatoes were collected from an area of 540 ha and tested by IF for R. solanacearum and by ELISA and IF for C. michiganensis subsp. sepedonicus (according to the Council Directives 98/57/EC and 93/85/EEC).
R. solanacearum was not found in the tested samples.
C. michiganensis subsp. sepedonicus was detected in 14 samples. The total area infested by ring rot was 72.3 ha. Phytosanitary measures to prevent any further spread and to eradicate the pathogen have been taken following the requirements of Council Directive 93/85/EEC. According to the EPPO Secretariat, this is the first report of C. michiganensis subsp. sepedonicus in Latvia.
Sources
NPPO of Latvia, 1999-05.