The Nevada Irrigation District uses Glyphosate- and copper-based herbicides to manage 350 miles of their 475 mile raw water canal system. Roundup is sprayed along unlined ditch banks and berms year-round, and inside de-watered canals between October 15th – April 15th (the off-irrigation season) Algaecides such as Captain, Nautique, and Cutrine Ultra are dripped directly […]