Chionaspis pinifoliae
Pest description and crop damage White scale flock needles. Hosts: Douglas-fir and pines. Eggs hatch May or June, perhaps July.
Management-chemical control
Apply to crawler stage.
- azadirachtin (AzaDirect and others)-Some formulations are OMRI-listed for organic production.
- bifenthrin (OnyxPro, Sniper and others) (Group 3A)-Restricted use pesticide. Some products not registered for use in Washington.
- buprofezin (Talus and others) (Group 16)
- dinotefuran (Safari 20 SG) (Group 4A)
- horticultural oil/soap (M-Pede and others)-Test for phytotoxicity for any new oil product prior to widespread use. Some formulations are OMRI-listed for organic production.
- spirotetramat (Movento) (Group 23)
- sulfoxaflor (Transform WG) (Group 4C)-Crawler stage application.