Possibilities of the control of double-spined bark beetle Ips duplicatus C. R. Sahlb. populations in southern Poland.
Information is presented on the occurrence of Ips duplicatus in southern Poland, with a review of published studies on the biology and control of the pest, so that a preliminary selection may be made of possible control methods. On the basis of one-year field observations, a critical analysis of control tactics and a preliminary estimation of the usefulness of the proposed control methods are given. Notably, the usefulness of the trap trees (lying or standing) and pheromone traps baited with I. typographus pheromones (Pheroprax, Ipsodor) and I. duplicatus pheromones (Pheagr-Idu) is described. Lying trap trees are not useful for I. duplicatus, but the testing of lying trees with a support will be continued. Field trials with synthetic pheromones indicated that I. duplicatus responds to I. typographus attractants, but the catches are very variable. The trials with the Pheagr-Idu were not successful. Possible modifications to the test control methods and future investigations are indicated.