Gateway on Pesticide Hazards and Safe Pest Management

Imazethapyr

General Information

• Product Names:
  Authority (FMC)
  Clearpath (BASF)
  Lightning (BASF)
  Optill (BASF) formulated with Saflufenacil
  Pursuit (BASF)
  Camo (Albaugh) formulated with Fomesafen Sodium

• Chemical Class: Imidazole compound
• Uses: Controls grasses and broadleaved weeds including barnyardgrass, crabgrass, cocklebur, panicums, pigweeds, nightshade, mustard, smartweed, velvetleaf, jimsonweed, foxtails, seedling johnsongrass, lambsquarters, morningglory and others.
• Alternatives: Organic agriculture

Health and Environmental Effects

• Cancer: Not documented
• Endocrine Disruption: Not documented
• Reproductive Effects: Not documented
• Neurotoxicity: Not documented
• Kidney/Liver Damage: Not documented
• Sensitizer/ Irritant: Yes (4)
• Birth/Developmental: Not documented
• Detected in Groundwater: Not documented
• Potential Leacher: Not documented
• Toxic to Birds: Not documented
• Toxic to Fish/Aquatic Organisms: Not documented
• Toxic to Bees: Not documented

Additional Information

• Supporting information:
  • Extoxnet Imezthapyr Factsheet (Extension Toxicology Network)
  • PAN Pesticides Database: Imezthapyr (Pesticide Action Network)
• Studies:
• A weight-of-evidence review of colorectal cancer in pesticide applicators: the agricultural health study and other epidemiologic studies.. Alexander DD, Weed DL, Mink PJ, Mitchell ME. 2012. Int Arch Occup Environ Health. 85(7):715-45.