Chlorsulfuron

Trade name(s) Glean XP, Telar DF

Manufacturer(s) DuPont

Formulation(s) 75% dry flowable

Remarks A selective preemergence or early postemergence herbicide used at low rates. Carefully consider crop rotation plans before using. Recommended for use in wheat, barley, oats, and in fallow on soils of pH 7.5 or less. Telar formulation is a selective broadleaf herbicide used preemergence to postemergence in noncropland areas.

Water solubility 587 ppm at pH 5; 31,800 ppm at pH 7

Storage conditions Stable when excess moisture or humidity are excluded from container.

Acute toxicity LD50 - 5,545 mg/kg

Action in plant Interferes with enzyme acetolactate synthase, resulting in a rapid cessation of cell division and plant growth in both roots and shoots.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Sulfonylurea

Koc Average is 40 mL/g at pH 7