Outbreak of rhizomania in Denmark
In autumn 2000, rhizomania (caused by Beet necrotic yellow vein benyvirus;- EPPO A2 quarantine pest) was reported for the first time in Denmark. Two outbreaks were found on the island of Lolland which is the main production area of sugar beet in Denmark. Analysis of plant and soil samples from two farms situated about 25 km apart from each other showed infection by Beet necrotic yellow vein benyvirus. A third occurrence was observed in a beet plant in a glasshouse. No direct connection could be established between these findings and the possible origin of this infection has not yet been identified. Further investigations are being carried out to determine the extent of the disease. The Danish Plant Directorate has intensified surveillance in the affected region and soil sampling is being carried out at relevant locations. The situation of Beet necrotic yellow vein benyvirus in Denmark can be described as: Present: only in 2 areas in Lolland and in one glasshouse.
NPPO of Denmark, 2001-02.