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Ways to Keep Irrigation Canals Weed-Free for Better Communities

Jun 2023

Healthy environments include healthy waterways. In irrigation canals, aquatic weeds and algae can interrupt water movement and be a nuisance on many levels.

Aquatic weeds and algae play a large role in irrigation canal water quality. Weeds and algae grow rapidly in irrigation canals. In addition to impairing water movement, weeds and algae take up volume and create resistance, reducing the canal capacity for the growers that depend on water for irrigation. Any imbalance in the water distribution process results in a scarcity of water in some areas and water clogging in other areas. These infestations also create heightened risk for disease and insect pests.

As the fifth-largest agrochemical company in the world, UPL manufacturers an array of aquatic products to help irrigation districts to keep their conveyance structures clean and facilitate water movement.

Endothall, the active ingredient in CASCADE® and TETON® controls weeds and algae in irrigation canals. These products control a broad spectrum of weeds including sago pondweed, horned pondweed, milfoil and naiad. TETON controls weeds and algae, including filamentous algae such as spirogyra and pithophora.

Timing is an important factor for using products like CASCADE or TETON. Proactively addressing weed growth is simpler and more cost effective than treating canals after the weeds have caused a serious water disruptions or shortages.

Water treated with CASCADE and TETON, when applied according to their approved labels, is safe for human, livestock, and irrigation on food crops.

For more information, download UPL’s Irrigation Canals Environmental Guide.

To learn more, reach out your UPL Aquatics representative by emailing