bromoxynil (Buctril, Broclean, Brox 2EC, or Buctril 4EC)
Idaho and east of the Cascades, dry bulb onions only
Rate 0.25 to 0.38 lb ai/A (1 to 1.5 pints/A) for Buctril, Broclean, and Brox 2EC. Use 0.25 to 0.375 lb ai/A (0.5 to 0.75 pints/A) for Buctril 4EC.