Pacific Northwest Insect Management Handbook

Vetch hay-Omnivorous leaftier

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<p class="pest-sci-name">Cnephasia longana</p>
<p class="Body-Text"><span class="bold">Pest description and crop damage </span>Yellow spindle-shaped larvae with brown heads and light stripes on each side of the back. They web and feed within terminal leaves.</p>
<p class="mgmt-head">Management-chemical control</p>
<ul>
<li class="controls1"><span class="italic">Bacillus</span> <span class="italic">thuringiensis</span> (Javelin WG) at 0.5 to 1.5 lb/A. PHI 0 days. REI 4 hr. Addition of a spreader sticker may improve performance. Some formulations are OMRI-listed for organic use.</li>
<li class="controls1">malathion (Malathion 5EC) at 0.625 to 1.25 lb ai/A. PHI 0 days. Retreatment interval 14 days. REI 12 hr. Limit 2 treatments per cutting.</li>
<li class="controls1">methoxyfenozide (Intrepid 2F) at 0.06 to 0.16 lb ai/A. PHI 0 days graze, 7 days hay. REI 4 hr. Do not exceed 0.5 lbs ai/A/yr. Limit 1 treatment per cutting.</li>
</ul>

Kaur, N. (Ed.). 2024 Pacific Northwest Insect Management Handbook.
© Oregon State University.

Use pesticides safely!

  • Wear protective clothing and safety devices as recommended on the label. Bathe or shower after each use.
  • Read the pesticide label—even if you’ve used the pesticide before. Follow closely the instructions on the label (and any other directions you have).
  • Be cautious when you apply pesticides. Know your legal responsibility as a pesticide applicator. You may be liable for injury or damage resulting from pesticide use.

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