Small grain-Grasshopper

Includes

Clearwinged grasshopper (Camnula pellucida)
Migratory grasshopper (Melanoplus sanguinipes)

Pest description and crop damage Both young and adults do damage. They feed on foliage, heads, or often on stems just beneath the heads, causing them to drop. They may attack any of the cereal crops.

Management-chemical control

Seed treatment

Seed treatment used on wheat and barley may provide early season protection from grasshoppers.

  • imidacloprid (Gaucho 600F) at 1.2 to 2.4 fl oz per (0.047 to 0.094 lb ai) /100 lb seed to provide early-season protection. Do not graze or feed livestock on treated areas within 45 days after planting. To reduce early season damage caused by grasshoppers, Gaucho 600 treated seed may be planted as a 50 to 60 foot border around the edges of the field.
  • thiamethoxam (Cruiser 5FS) at 0.75 to 1.33 fl oz (0.03 to 0.052 lb ai) /100 lb seed. Do not graze or feed livestock within 45 days of application.

Foliar sprays

  • alpha-cypermethrin (Fastac EC) at 0.02 to 0.025 lb ai/a. PHI 14 days. REI 12 hr. Retreatment interval 14 days. Do not exceed 0.075 lb ai/a per season. Wheat and triticale.
  • Beauveria bassiana GHA (Mycotrol ESO) at 0.5 to 2 pints/a. PHI 0 days. Do not apply more than 6 pints/a. OMRI-listed for organic use.
  • beta-cyfluthrin (Baythroid XL) at 0.014 to 0.019 lb ai/a. PHI 30 days. REI 12 hr. Do not forage or graze within 3 days of application. Retreatment interval 3 days. Do not exceed 0.038 lb ai/a per season.
  • chlorpyrifos (Lorsban Advanced) at 0.23 to 0.47 lb ai/a. PHI 14 days forage and hay; 28 days grain and straw. REI 24 hr. Do not exceed 2 treatments per acre per year. Wheat only.
  • chlorpyrifos/gamma-cyhalothrin (Cobalt) at 0.16 to 0.3 lb ai/a (wheat only). REI 24 hr. PHI 14 days forage and hay, 30 days grain and straw. Not more than 2 applications per year. Do not exceed 1 lb ai/a chlorpyrifos per season. Wheat only.
  • chlorantraniliprole (Coragen) at 0.026 to 0.065 lb ai/a. REI 4 hr. PHI 1 day. Limit 4 treatments. Retreatment interval 7 days. Do not exceed 0.2 lb ai of chlorantraniliprole per acre per year.
  • cyfluthrin (Tombstone) at 0.028 to 0.038 lb ai/a (wheat only). PHI 30 days. Pre-grazing or foraging interval 3 days. REI 12 hr. Retreatment interval 3 days. Do not exceed 0.076 lb ai/a per season.
  • diflubenzuron (Dimilin 2L) at 0.015 to 0.031 lb ai/a. PHI for grain and straw 50 days; forage 3 days; hay 15 days. REI 12 hr. One treatment per season.
  • dimethoate (Dimethoate 400) at 0.375 lb ai/a, PHI 35 days. REI 48 hr. Do not exceed 0.5 lb ai/a per season. Wheat only.
  • gamma-cyhalothrin (Declare) at 0.01 to 0.015 lb ai/a. PHI 30 days. REI 24 hr. Do not apply more than 0.03 lb ai/a per season. Do not graze or forage within 7 days of application. Do not feed straw within 30 days.
  • lambda-cyhalothrin (Silencer, Warrior II) at 0.02 to 0.03 lb ai/a. PHI 30 days. REI 24 hr. Do not graze or forage within 7 days of application. Do not feed straw within 30 days of last treatment. Do not exceed 0.06 lb ai/a per season.
  • lambda-cyhalothrin+tebuconazole (Crossover) at 0.14 lb ai/a. PHI 30 days. REI 24 hr. Do not exceed 0.11 lb ai/a tebuconazole or 0.06 lb ai/a lambda cyhalothrin per season. Feeding restrictions apply. Do not exceed 8 fl oz/a or 0.139 lb ai/a per season.
  • lambda-cyhalothrin/chlorantraniliprole (Besiege) at 0.059 to 0.098 lb ai/a. PHI 30 days. REI 12 hr. Retreatment interval 7 days. Do not exceed 0.06 lb ai lambda-cyhalothrin or 0.2 lb ai chlorantraniliprole per year. Feeding restrictions.
  • lambda-cyhalothrin/thiamethoxam (Endigo ZC) at 0.056 to 0.072 lb ai/a. PHI 30 days. REI 24 hr. Retreatment interval 7 days. Do not exceed 0.06 lb ai/a lambda-cyhalothrin or 0.125 lb ai/a thiamethoxam per season. Barley only.
  • malathion (Gowan Malathion 8) at 1.0 to 1.25 lb ai/a. PHI 7 days. REI 12 hr. Retreatment interval 7 days. Do not exceed 2 applications per season.
  • Nosema locustae (Nolo Bait)-Apply as manufacturer directs. OMRI-listed for organic use.
  • pyrethrin-There are several pesticides containing various amounts of pyrethrins. Check each label for the use and amount needed. Some formulations are OMRI-listed for organic use.
  • spinosad (Success, Entrust SC) at 0.047 to 0.094 lb ai/a. PHI 21 days for grain and straw; 3 days for forage, fodder or hay. REI 4 hr. Do not exceed 0.28 lb ai/a per year. Limit 3 treatments per year. Entrust SC is OMRI-listed for organic use.
  • zeta-cypermethrin (Mustang) at 0.04 to 0.05 lb ai/a. PHI 14 days also for forage and hay. REI 12 hr. Retreatment interval 14 days. Do not apply more than 0.25 lb ai/a per year. Barley, wheat and triticale only.
  • zeta-cypermethrin/chlorpyrifos (Stallion) at 0.12 to 0.28 lb ai/a. PHI for forage or hay 14 days; grain and straw 28 days. REI 24 hr. Retreatment interval 14 days. Do not allow meat or dairy animals to graze within 28 days of application. Do not exceed 0.05 lb ai/a zeta-cypermethrin or 0.5 lb ai/a chlorpyrfos per season. Wheat only.