2,4-D and MCPA generally control many broadleaf species and few or no annual grasses. They persist in the soil for roughly 15 and 30 days, respectively. Water and soil pH have little effect on persistence, but solution pH does control the extent to which the herbicide enters the plant via the cuticle. The herbicides persist longer in cool, dry conditions than in warm, moist conditions. Plant injury symptoms.
Affected plants show rapid epinasty, tissue proliferation and slow die-back.
2,4-D and MCPA possess foliar and some soil activity. Benzoic Acids Key performance features. This growth regulator is applied postemergence. Banvel controls many broadleaf species and no annual grasses. It persists in the soil for 10 to 30 days.