Trade name(s) Dual, Dual Magnum, Dual II Magnum, Pennant, Me-Too-Lachlor, Brawl, Parallel, Charge Max, Moccasin
Manufacturer(s) Syngenta, ADAMA, UPL, Winfield
Formulation(s) 7.62, 7.64, 7.8, and 8 lb/gal emulsifiable concentrate, 5% granule
Remarks Acetamide compound; a selective, preemergence herbicide primarily for annual grass and yellow nutsedge control. Usually combined with materials that kill annual broadleaf weeds. S-metolachlor is the more active isomer, used at lower rates on the same crops; other characteristics are the same.
Water solubility 530 ppm
Storage conditions Store above -30°F.
Acute toxicity LD50 - 2,150 mg/kg (S-metolachlor)
Action in plant Inhibits roots and shoots.
Site of action Group 15: inhibits very long chain fatty acid synthesis
Chemical family Chloroacetamide
Koc Average is 200 mL/g (S-metolachlor)