Situation of Diabrotica virgifera in Central Europe
During the 1st Meeting of the EPPO ad hoc Panel on Diabrotica virgifera (EPPO A2 quarantine pest) held jointly with IWGO in Zabreb (1996-10-15/16), the current situation in Central Europe was presented. Extracts from the Panel meeting report are presented below.
D. virgifera has not been found.
No participant from Bosnia-Herzegovina could attend the meeting but Croatian scientists reported that a trapping programme was carried out in 1996. Traps were placed in northern Bosnia and some captures were made in areas not far from he areas in eastern Croatia where catches were made in 1996.
In 1996, 788 adult D. virgifera were trapped in the eastern part of the country (714 in Vukovarsko-srijemska country (adjoining Serbia), 66 in Osjecko-baranjska country (adjoining Hungary), 8 in Brodkso-posavska country (adjoining Bosnia-Herzegovina). No active infestations of maize were found, though a few flying adults were seen.
- Federal Republic of Yugoslavia
Adults of D. virgifera are only trapped in the northern part of Serbia. No catches have been made in southern Serbia and Montenegro. The zone in which active damage is observed remains restricted and an E-W oval around Belgrade. In this area, yield losses are up to 20;% (but up to 80 % lodging has been seen locally).
D. virgifera has not been found.
In 1996, monitoring was extended to the whole country. Adults were caught only in the southern part, in an area about 100 km along the Serbian border and 40 km in depth. The numbers of adult caught were much greater than in 1995 (19 times more, for the same type of trap) and catches were made at 35 sites in 1996, instead of 5 in 1995. However, maize crops did not show any active infestations.
In 1996, five monitoring points were established in the south of the country (near Czech and Slovak borders), in maize fields and in a maize-breeding station. D. virgifera was not found.
Trapping results were negative in 1995 but the first adults were caught in 1996. Three adults were caught at Nadlac (see EPPO RS 96/165). Maize fields were monitored throughout the country for signs of damage, but nothing was found.
Slovakia was not present at the meeting but the Plant Protection Service of Slovakia has recently informed that EPPO Secretariat that a survey was carried out in 1996. 20 yellow sticky traps were installed in a maize field in July 1996, in Iza (Komarno district). This locality is situated near the Hungarian border (3 km) in a warm area of the country, and the chosen maize field is near a road leading to Hungary. Traps were inspected twice or three times a week and renewed every two weeks, from 4th of July until 19th September 1996. D. virgifera was not found during this survey.
In 1996, no adults were caught in traps placed along the Croatian and Hungarian borders.
A trapping programme was started in the extreme south-west of the country (adjoining Romania) and the insect was not found.
No information was available on the situation of D. virgifera in other countries surrounding the area of the outbreak (Albania, Bulgaria, Macedonia, Moldova).
Report of the 1st Meeting of the EPPO ad hoc Panel on Diabrotica virgifera held jointly with the 3rd international IWGO Workshop on Diabrotica virgifera, Zagreb, 1996-10-15/16.
Plant Protection Service of Slovakia, 1997-01.