Alachlor (restricted-use herbicide)

Trade name(s) Arena, Partner, Micro-Tech, Shroud, INTRRO

Manufacturer(s) Monsanto Co.

Formulation(s) 4 lb/gal emulsifiable concentrate; 15% granule; 65% water-dispersible granules

Remarks A selective, soil-active herbicide applied preplant or preemergence. Shallow, mechanical soil incorporation may be necessary to improve weed control.

Water solubility 242 ppm

Storage conditions Store above 32°F away from heat or flame. Warm to 72°F and roll or shake frequently if frozen.

Acute toxicity LD50 - 1,800 mg/kg

Action in plant Inhibits roots and shoots.

Site of action Group 15: inhibits very long chain fatty acid synthesis

Chemical family Chloroacetamide

Koc Ranges from 43 to 209 mL/g