pine bark bettle
What is the recommended systemic treatment for central Oregon and what is the recommended spray
Deschutes County Oregon
We have several different kinds of bark beetles that will attack live pine trees. Bark beetle are attached to stressed trees, so usually beetle attacks are a sign of something else going on: drought, root damage, excessive or inappropriate pruning, too many trees competing for space, light and water.
The most common bark beetles include:
Mountain Pine Beetle: https://www.oregon.gov/ODF/Documents/ForestBenefits/Mountain%20Pine%20Beetle%202017.pdf
Western Pine Beetle: https://www.oregon.gov/ODF/Documents/ForestBenefits/Western%20Pine%20Beetle%202016.pdf
and Red Turpentine Beetle:
The above links provide management guidance.
Once beetles attack a tree there is little you can do other than prevent spread of the infestation. Insecticides are only recommended as a preventative for high value trees, but are expensive and difficult to apply, and must be applied by a licensed professional arborist or forester.