The rate of spreading of Diabrotica virgifera in Europe between 1993 and 1997
1998
Camprag, D. (Poljoprivredni fakultet, Novi Sad (Yugoslavia))
Diabrotica virgifera, or the Western corn rootworm, arrived in Europe from America nearly ten years ago. The first damages from this pest in Europe were recorded in 1992 in Serbia (Yugoslavia), namely at the Surcin site in the vinicity of Belgrade airport. From there, the adult insects of this species spread in various directions during 1993-1994 at the average rate of 20-25 km a year. As the total Western corn rootworm population grew, the spreading rate increased. In 1997, according to H.K. Berger, the average annual spreading rate of this pest species reached 40-80 km. By 1997, the Western corn rootworm spread about 270 km to north, 200 km to the west and southwest, and 170 km to the east. The average pace of spreading ranged between 35 and 55 km and was the fastest to the north and the slowest to the east. The zone of significant or major Western corn rootworm damage has thus far been limited to Serbia (Yugoslavia), namely to and 80-km radius around the Surcin site, where this pest first appeared (the damage is especially significant in the first 40-50 km of this area).
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Bibliographic information
This bibliographic record has been provided by Unassigned data from Yugoslavia