dicamba (Clarity)
Rate 0.5 lb ae/A
Time Apply when red sorrel has new foliage, usually November 15 to March 15. Spring application controls spring-germinating seedlings better than sprays applied earlier.
Remarks This treatment kills red sorrel seedlings and most of the old plants. It prevents surviving plants from setting seed.
Caution Avoid drift to sensitive crops.
Site of action Group 4: synthetic auxin
Chemical family Benzoic acid