Clover seed-Western spotted cucumber beetle

Diabrotica undecimpunctata

Pest description and crop damage Yellowish green, black-spotted beetle, common only in western Oregon and Washington. Adults feed on tender seedlings and retard or destroy the stand. This insect also has been observed damaging red clover and trefoil blooms.

Management-chemical control

  • carbaryl (Carbaryl, Sevin) at 1 lb ai/a. One application per cutting. PHI 7 days of harvest. REI 12 hr. This product is highly toxic to bees exposed to direct treatment or residues on blooming crops. Do not apply this product or allow it to drift to blooming clover crops.