Nuculaspis californica
Pest description and crop damage Gray-black scale. Hosts: Douglas-fir and pine.
Management-chemical control
- azadirachtin (AzaDirect and others)-Some formulations are OMRI-listed for organic production.
- bifenthrin (OnyxPro, Sniper and others) (Group 3)-Restricted use pesticide. Some products not registered for use in Washington.
- buprofezin (Talus 70DF and others) (Group 16)
- dinotefuran (Safari 20 SG) (Group 4A)
- horticultural oil ( 440 Superior Oil and others)-Test for phytotoxicity for any new product prior to widespread use. Some formulations are OMRI-listed for organic production.
- sulfoxaflor (Transform WG) (Group 4C)-Crawler stage application.