The St. Mary River Irrigation District will be controlling broadleaf weeds along its right of ways for the 2026 irrigation season. The District will use 2,4-D, Milestone, Dicamba and Glyphosate for weed control on driving banks and reed canary grass control along canals. This spray program will be starting in April of 2026 and will continue to the end of the irrigation season. Also included in this weed control program will be the treatments for aquatic weeds. To control these aquatic weeds, the SMRID may be treating the canals as required and as noted below on a two- or three-week schedule for the 2026 irrigation season. Treatments cannot be completed consecutive weeks in an area. The canals will be treated with Magnacide H (Acrolein, stabilized) to control the growth of aquatic weeds and algae.
All sub-laterals that take water from the above noted laterals may/will be affected by these treatments. Information material will be supplied upon request if you have land affected by these treatments. This weed control program is administered by licensed applicators that are under approval from Alberta Environmental and Protected Areas.
Operations Manager