I. SIVCEV, A. GALO
Institute for Plant Protection and Environment; Banatska 33, 11080 Zemun, Yugoslavia

In 2001 we continued with monitoring of WCR (D. virgifera virgifera LeConte) dispersal in Serbia. Sex pheromone traps produced by the Plant Protection Institute, Budapest,  were used on 240 sites in order: a) to check presence or absence of WCR imagoes and b) to check population density. Further spread on the south east was registered, along the border with Bulgaria. Economic population and damages were registered sporadically within the area registered during last year. In 2001 there were no newly registered areas with damages from larvae. In general, corn fields were significantly less infested and damaged. Due to abundant rainfalls during the spring damaged corn plants recovered and it was difficult to find heavily damaged fields with logged plants.  Yield reduction  was insignificant.

Comparing the population density from last year, it is obvious that in 2001 population was reduced significantly on the whole territory of Serbia.