First report of Cryphonectria parasitica in Guernsey
The NPPO of the United Kingdom recently informed the EPPO Secretariat of the first record of Cryphonectria parasitica (EPPO A2 List) in Guernsey. During general surveillance activities, the disease was found in a public park in St Sampsons. A mature sweet chestnut (Castanea sativa) tree showing characteristic bark cracking symptoms was observed, and subsequent analysis by the Forestry Commission confirmed the presence of C. parasitica. The possible source of infection of this mature tree could not be determined. Official control measures have been put in place to eradicate the disease.
The pest status of Cryphonectria parasitica in Guernsey is officially declared as: Present: not widely distributed and under official control.
Sources
NPPO of the United Kingdom (2022-10).