Trade name(s) Mecomec 4 Turf Herbicide, MCPP-p 4 Amine, Trimec 1000
Manufacturer(s) NuFarm, PBI/Gordon
Formulation(s) 2, 2.5, and 4 lb/gal soluble concentrates, available as amine and potassium salts
Remarks A phenoxy compound used as a selective herbicide applied postemergence. Safer on bentgrass lawns and greens than other phenoxy compounds.
Water solubility 620 ppm
Storage conditions Stable at moderate temperatures and redissolves, if frozen.
Acute toxicity LD50 - 650 mg/kg
Action in plant Mimics natural plant hormones.
Site of action Group 4: synthetic auxin
Chemical family Phenoxy acetic acid
Koc Average is 20 mL/g (estimated) at pH 7