In years when outbreaks occur, Federal, State, and industrial landowners conduct more frequent aerial detection surveys. When a sufficient number of infested trees of merchantable size are available for salvage, they should be removed as quickly as possible. The first step is to cut a 40- to 70-foot-wide buffer strip of green trees in front of the most recently attacked trees. Newly attacked trees and trees containing larvae and pupae should be removed next. This approach will insure that further growth of the infestation is stopped and that all infested trees are removed.
Where trees cannot be salvaged, infestation spread may be controlled by felling and treating infested trees with lindane or chlorpyrifos. They also spray standing trees to prevent infestation.
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