1. Insect
  2. Vegetable Crops
  3. Vegetable Crops
  4. Hosts and Pests of Vegetable Crops

Parsnip-Leafhopper

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Includes six-spotted leafhopper (Macrosteles quadrilineatus)

Pest description, crop damage and life history

See

Common Pests of Vegetable Crops

Pest monitoring Leafhoppers are collected easily with sweep nets. Yellow sticky traps also can be used to monitor.

Management-cultural control

Destruction of weed species known to harbor aster yellows is important.

Management-chemical control: HOME USE

  • azadirachtin (neem oil)-Some formulations are OMRI-listed for organic use.
  • bifenthrin (often as a mix with zeta-cypermethrin).
  • capsaicin.-Some formulations are OMRI-listed for organic use.
  • carbaryl
  • cyfluthrin
  • imidacloprid
  • plant-derived essential oils (rosemary, peppermint etc.)-Some formulations are OMRI-listed for organic use.
  • pyrethrins-Some formulations are OMRI-listed for organic use.
  • zeta-cypermethrin

Management-chemical control: COMMERCIAL USE

  • alpha-cypermethrin (Fastac EC) at 0.012 to 0.025 lb ai/A. PHI 1 day. REI 12 hr. Retreatment interval 7 days. Do not exceed 0.075 lb ai/A per season. Washington only.
  • Chenopodium ambrosioides (Requiem Prime) at 2 to 4 pints/A. PHI 0 days. REI 4 hr.
  • deltamethrin (Delta Gold) at 0.018 to 0.028 lb ai/A. PHI 3 days. REI 12 hr. Retreatment interval 3 days. Do not exceed 0.14 lb ai/A per season.
  • flupyradifurone (Sivanto 200SL) at 0.09 to 0.14 lb ai/A. PHI 7 days. REI 4 hr. Retreatment interval 10 days. Do not exceed o.365 lb ai/A per season.
  • imidacloprid (Admire Pro) at 0.16 to 0.38 lb ai/A soil; 0.043 lb ai/A foliar. PHI 21 days soil; 7 days foliar. REI 12 hr. Do not exceed 0.38 lb ai/A soil or 0.13 lb ai/A foliar per season. Retreatment interval 5 days foliar.
  • malathion (Malathion 8 Flowable) at 1.25 lb ai/A. PHI 7 days. REI 24 hr. Retreatment interval 7 days. Limit 3 treatments per year
  • sulfoxaflor (Transform WG) at 0.047 to 0.086 lb ai/A. PHI 7 days. REI 24 hr. Limit 4 treatments. Do not exceed 0.266 lb ai/A per year.
  • thiamethoxam (Actara) at 0.023 to 0.047 lb ai/A. PHI 7 days. REI 12 hr. Retreatment interval 7 days. Do not exceed 0.125 lb ai/A per season.
  • thiamethoxam (Platinum) at 0.078 to 0.188 lb ai/A. REI 12 hr. Apply to the soil as in-furrow spray, band application, drench, shanked or with irrigation. Do not exceed 0.188 lb ai/A per season.
  • zeta-cypermethrin (Mustang) at 0.022 to 0.05 lb ai/A. PHI 1 day. REI 12 hr. Do not exceed 0.3 lb ai/A per year.

These products contain commonly used active ingredients for control of leafhopper in parsnip. There are other materials available. Please consult a licensed crop advisor for additional recommendations.