2,4-D (2,4-D amine, 2,4-D LV 4, several other trade names)
Rate 0.5 to 1 lb ae/a
Time Apply when oats are in hard dough stage, to control weeds that will interfere with harvest.
Remarks Results will be best when soil moisture is sufficient for active weed growth. REI 12 hr for the low volatile ester (LVE) formulation and 48 hr for the amine formulation.