Meloidogyne chitwoodi and Meloidogyne fallax found in Germany
The NPPO of Germany recently informed the EPPO Secretariat of the occurrence of Meloidogyne chitwoodi (EPPO A2 List) in Hessen, and of M. fallax (EPPO A2 List) in Hessen and Baden-Württemberg. The origin of these recent cases is unclear.
- Meloidogyne chitwoodi and M. fallax in Hessen
In Hessen, M. chitwoodi has been detected and identified in the soil of a glasshouse used for vegetable production (mainly tomato production). Tomato plants grown under this glasshouse showed root galls. Another nematode species, M. incognita, was also found. Because the nematode species had been identified only on the basis of their morphological characteristics, it could not be excluded that M. fallax was also present at that time.
During subsequent investigations, M. fallax has been detected on the same area where tomatoes had been grown. Approximately 30% of the plants (covering 1 ha under glass) showed significant swellings on the roots. A PCR test was conducted according to the EPPO diagnostic protocol PM 7/41(2) to confirm the identity of the nematode. Official control measures were taken against the pests.
- Meloidogyne fallax in Baden-Württemberg
In Baden-Württemberg, M. fallax has been detected on Lycopersicon esculentum cv. ‘Bocati’ grafted on ‘Maxifort’ in a tomato production company. Because affected plants produced small fruits and presented symptoms on the roots, tests were conducted in accordance with the EPPO diagnostic protocol PM 7/41(2). The presence of M. fallax was detected in a glasshouse of approximately 200 m².
Official control measures were taken against the pest: steam sterilization of the soil, and destruction of tomato plant debris (covered with a plastic foil and stored outdoors for a long period, or burned).
The pest status of both Meloidogyne chitwoodi and Meloidogyne fallax in Germany is officially declared as: Transient, only in some areas, actionable, under eradication.
Sources
NPPO of Germany (2011-01).
EPPO (2009) PM 7/41(2) Diagnostics. Meloidogyne chitwoodi and Meloidogyne fallax. Bulletin OEPP/EPPO Bulletin 39(1), 5–17.