Rate 0.094 lb ae/a to 0.188 lb ae/a clopyralid (0.25 to 0.5 pint/a Stinger 3SC) to control annual broadleaf weeds. To control Canada thistle and suppress perennial sowthistle, use 0.125 to 0.25 lb ae/a clopyralid (0.5 to 0.66 pint/a Stinger 3SC).
Time Apply when beets have 2 to 8 true leaves. For annual weed control from weed emergence up to the 5 leaf stage and for Canada thistle, apply after most basal leaves emerge, but before bud stage.
Remarks May be tank mixed with Betamix or to control additional weeds. For most effective control of Canada thistle, apply broadcast to entire infested area and for best results, do not cultivate thistle patches. Apply at 10 gal/a or higher total spray volume. Restricted entry interval (REI) is 12 hr.
Caution Wheat, barley, oats, grasses, field corn, or sugar beets may be planted any time following treatment. Do not plant alfalfa, asparagus, canola (rapeseed), Brassica species grown for seed, cole crops, dry beans, soybeans, grain sorghum, mint, onions, popcorn, safflower, sunflower, sweet corn, or strawberries for 12 months after applying clopyralid. In areas with 18 or more inches of annual precipitation (not including irrigation), alfalfa, asparagus, dry beans, canola (rapeseed), Brassica species grown for seed, grain sorghum, mint, onions, popcorn, sweet corn, soybeans, strawberries, and sunflowers may be planted 12 months after applying clopyralid. Cole crops, lentils, peas, potatoes (including potatoes grown for seed), safflower, or broadleaf crops grown for seed (excluding Brassica species) should not be planted for 18 months after treatment unless previous experience has shown no crop injury with the minimal 12-month rotation interval. In areas with less than 18 inches average annual precipitation (not including irrigation), do not plant alfalfa, dry beans, soybeans, sunflowers, lentils, peas, potatoes (including potatoes grown for seed), or broadleaf crops grown for seed (excluding Brassica species) until 18 months after applying clopyralid. Sensitive crops may suffer injury or yield loss up to 4 year after application. Re-treat as necessary but do not exceed 0.66 pint/a per year. Preharvest interval is 45 days for beet roots and tops.
Site of action Group 4: synthetic auxin
Chemical family Pyridine