"fireweakened" - 1 õppematerjal

The control of forest insects: general considerations

insects. Diseased Trees ­ diseases that defoliate trees may render them susceptile to the attacks of cambiumfeeding insects. Lightingstruck Trees ­ coniferous trees struck by lighting appear to be very attractive to bark beetles. Windfall and Snowbreak ­ a number of severe epidemics of bark beetle can be traced to windblown timber. Slash ­ includes all the trash in the woods left on the ground by cutting of trees. Fireweakened Timber ­ a forest fire usually leaves in its wake a tremendous breeding ground for forest insects. Flatheaded borer Melanophila consputa Lec. Click to edit Master text styles Second level Third level Fourth level Fifth level  Click to edit Master text styles Second level