H. IMGRABEN
Regierungspräsidium Freiburg, Pflanzenschutzdienst, Ref. 33, Bertoldstraße 43, D-79098 Freiburg, Germany

Baden-Württemberg is an important area for the production of grain maize, maize for silage and maize seed production in Germany. Since 1997 the Land Baden-Württemberg carries out a monitoring program with the aim to detect Diabrotica if it appears in the country.

On the basis of the current Diabrotica occurrence in Europe, it is considered, that the beetle will be imported by airplane or other means of transport. The WCR could also arrive along the Danube first to Bavaria and then to Baden-Württemberg.

In the year 2001 the number of the monitoring locations and the number of the pheromone traps were increased in particular near airports and airfields. As in the previous years traps were set out furthermore along motorways, near railway stations, near warehouses and customs stations. Altogether in the year 2001 at 67 locations in the country traps were set up.

The monitoring extended to the Rhine Valley, the area from the Bodensee to the Danube, the region around Stuttgart as well as the eastern section of Baden-Württemberg.
As in the previous year only pheromone traps (type PAL, Hungarian origin) were used.

The traps were set out at the beginning of July and controlled regularly.

Diabrotica virgifera beetles were not found in the traps.