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

Corn, sweet-Grasshopper

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Several species

Pest description, crop damage and life history

See:

Common Pests of Vegetable Crops

Management-chemical control: HOME USE

Follow information on the label about the timing and cutoff date for spraying the particular vegetable you are treating. Spray damaged plants according to label instructions when young hoppers or winged adults are seen.

  • azadirachtin (neem oil)-Some formulations are OMRI-listed for organic use.
  • bifenthrin (often as a mix with zeta-cypermethrin)
  • carbaryl
  • cyfluthrin
  • deltamethrin
  • esfenvalerate
  • gamma-cyhalothrin
  • insecticidal soap-Some formulations OMRI-listed for organic use.
  • lambda-cyhalothrin
  • malathion
  • permethrin
  • 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

  • azadirachtin-See label for application rates. Some formulations are OMRI-listed for organic use.
  • alpha-cypermethrin (Fastac EC) at 0.018 to 0.025 lb ai/A. PHI 3 days. REI 12 hr. Retreatment interval 3 days. Do not exceed 0.075 lb ai/A per season.
  • beta-cyfluthrin (Baythroid XL) at 0.016 to 0.022 lb ai/A. PHI 0 days. REI 12 hr. Retreatment interval 2 days. Do not exceed 0.22 lb ai/A per year.
  • bifenthrin (Capture LFR) at 0.033 to 0.1 lb ai/A. PHI 1 day. REI 12 hr. Do not exceed 0.2 lb ai/A per season.
  • bifenthrin/zeta-cypermethrin (Hero) at 0.04 to 0.1 lb ai/A. PHI 3 days. REI 12 hr. Retreatment interval 3 to 5 days. Do not exceed 0.266 lb ai/A per season.
  • carbaryl (Sevin 5 Bait) at 2 lb ai/A. PHI 2 days ears, 14 days forage, or 48 days fodder. REI 12 hr. Retreatment interval 3 days. Do not exceed 8 treatments. Do not exceed 16 lb ai/A per season.
  • chlorantraniliprole (Coragen) at 0.026 to 0.065 lb ai/A. PHI 1 day. REI 4 hr. Limit 4 treatments per crop. Retreatment interval 1 day. Do not exceed 0.2 lb ai/A per season.
  • chlorantraniliprole/lambda-cyhalothrin (Besiege) at 0.06 to 0.1 lb ai/A. PHI 1 day. REI 24 hr. Retreatment interval 1 day. Do not exceed 0.48 lb ai of lambda-cyhalothrin or 0.2 lb ai of chlorantraniliprole per acre per growing season.
  • cyfluthrin (Tombstone) at 0.031 to 0.044 lb ai/A. PHI 0 days. REI 12 hr. Retreatment interval 2 days. Do not exceed 0.44 lb ai/A per season.
  • deltamethrin (Delta Gold) at 0.012 to 0.018 lb ai/A. PHI 1 day. REI 12 hr. Do not exceed 0.45 lb ai/A per year.
  • esfenvalerate (Asana XL) at 0.03 to 0.05 lb ai/A. PHI 1 day. REI 12 hr. Do not exceed 0.5 lb ai/A per year.
  • gamma-cyhalothrin (Declare) at 0.01 to 0.015 lb/A. PHI 1 day. REI 24 hr. Do not graze. Do not exceed 0.24 lb ai/A per season.
  • lambda-cyhalothrin/tebuconazole (Crossover) at 0.14 to 0.16 lb ai/A. REI 19 days. PHI 21 days for ears & forage; 49 days for fodder. Do not exceed 0.48 lb ai/A tebuconazole or 0.12 lb ai/A lambda-cyhalothrin. Not registered for use in WA.
  • malathion (Malathion 5EC at 1.0 lb ai/A. PHI 5 days. REI 72 hr if detasseling, 12 hr for all other activity. Retreatment interval 5 days. Limit 2 treatments per year.
  • novaluron (Rimon 083EC) at 0.039 to 0.078 lb ai/A. PHI 1 day. REI 12 hr. Retreatment interval 7 days. Do not exceed 0.39 lb ai/A per season.
  • permethrin (Pounce 25WP) at 0.1 to 0.2 lb ai/A. PHI 1 day. REI 12 hr. Do not exceed or 0.8 lb ai/A Pounce per season.
  • zeta-cypermethrin (Mustang) at 0.035 to 0.05 lb ai/A. PHI 3 days. REI 12 hr. Do not exceed 0.3 lb ai/A per season. Retreatment interval 3 to 5 days.