Study On The Integrated Management Of Cypress Bark-Beetles

This paper reports the results of studies on the integrated management Of Cypress Bark-Beetles. The technology of IPM includes the attraction of the host plant volatile to the bark beetles (Ploesinus aubei perris), chemical control, biological control.A series of experiments demonstrated the P.aubei perris are attracted to the extracts of arborvitae bark. Laboratory bioassays and field tests indicated that the essential oils isolated from arborvitae bark, leaf, and branch elicited evident attractant activities to P.aubei perris. The hexane extract from the ethanol extracts and the essential oils of the bark show strongest activity. High numbers of P.aubei perris were caught by traps that baited with the essential oils of the bark and turpentine oil in the field tests.Component of the arborvitae extracts were analyzed and identified tentatively. According to the results of GC-MS and bioassays, We can draw an inference that P.aubei perris were attracted to the mixture of monoterpenes and sesquiterpenes .The integrated management of the bark beetles (Ploesinus aubei perris) include three methods. Firstly, trapping is sited for adult. Secondly, Metarrhizium anisopliae , Beauveria bassiana and aluminum phosphide is used to control the larva. And last one is spraying regent or cypermethrin to reduce the number of the adults.