Clover seed-Clover leaf weevil

Hypera punctata

Pest description and crop damage This is the largest weevil found in legume fields. The full-grown larva is about 0.5 inch long and has a brown head. The body of the larva is green or yellowish-green shading to pink at the tip of the abdomen, with a white or pinkish line down the center of the back. Larvae feed on leaves.

Management-chemical control

  • bifenthrin (Brigade 2EC, Discipline 2EC) at 0.06 to 0.1 lb ai/a. REI 12 hr. Do not apply to blooming crop or allow to drift while bees are actively visiting bloom. Do not make more than 3 applications per crop year. Allow at least 21 days between treatments. Do not graze clover after applying. Do not cut treated clover for hay or forage. Do not use harvested seed for sprouting. No part of the treated field, including seed, seed screenings, hay, forage, or stubble, may be used for human or animal feed. Processed seed must be labeled. 24c SLN: Brigade 2EC, OR-070013 (expires 12/31/2023), ID-070009 (expires 12/31/24); Discipline 2EC, OR-040039 (expires 12/31/2020), ID-040009 (12/31/24). Oregon and Idaho only.
  • chlorpyrifos (Lorsban Advanced) at 1.0 lb ai/a. REI 24 hr. This product is highly toxic to bees. Do not apply when any clover bloom is present. Do not make more than one application per crop year. Do not graze clover after applying. Do not cut treated clover for hay or forage. Do not use harvested seed for sprouting. No part of the treated field, including seed, seed screenings, hay, forage, or stubble, may be used for human or animal feed. Processed seed must be labeled. 24c SLN: OR-090010 (expires 12/31/2023). Oregon only.
  • malathion at 1 to 1.25 lb ai/a. PHI 0 days. REI 12 hr. Apply to plants in bloom only in evening or early morning, when bees are not working in the fields or hanging on the outside of the hives.