Pest description and crop damage Primarily a pest in western Oregon and Washington. Damage is most critical when establishing a seedling stand.
- iron phosphate/spinosad (Bug-N-Sluggo) at 0.1 to 0.45 lb ai/A. PHI 3 days for hay and fodder. Do not exceed 3 treatments in 21 days. OMRI-listed for organic use.
- metaldehyde bait (Deadline) at 0.4 to 1.6 lb ai/A. REI 12 hr.