![]() ![]() It is possible to prevent infestation with penetrating sprays on individual, high value trees such as those in campgrounds and near houses, but they need to be applied before the tree is infected and the cost of such treatments is prohibitive for any large-scale application. This course of action was chosen after thoroughly exploring direct control measures for nearly a century and arriving at a simple conclusion: They don't work. ![]() spraying, felling, burning) and towards prevention of outbreaks. In the northwestern U.S., USDA Forest Service states that the focus has shifted from using pesticides to taking preventive measures:Ĭontrol methods have shifted away from direct control (e.g. What is the latest method of eradication for the mountain pine beetle, Dendroctonus ponderosae, that is rampant in western Canada? Keywords: Trees-Diseases and pests, Pesticides, Insect pests-Control ![]()
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