Clover seed-Pea leaf weevil

Sitona lineata

Pest description and crop damage Adults are small, grayish brown, faintly striped weevils about 0.17 inch long. They appear in large numbers in spring and sometimes late summer. Adult feeding may kill seedling plants and seriously defoliate older stands.

Management-chemical control

  • bifenthrin (Bifenture EC, Brigade 2EC, Capture 2EC, Discipline 2EC, Fanfare 2EC, Fanfare ES, Tundra EC) at 0.06 to 0.1 lb ai/a. Do not apply while bees are present. Do not make more than 3 applications per crop year. Allow at least 21 days between treatments. REI 12 hr. Do not graze clover after application. 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-960021, OR-040039, OR-070013, OR-170012 ID-080011, ID-900006, ID-040009, ID-070009, ID-060023, ID-130004, WA-040027, WA-070015.
  • chlorpyrifos (Lorsban Advanced) at 1.0 lb ai/a. 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. REI 24 hr. Do not graze clover after application. 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. Oregon only.