Sonar A.S. and herbicides that control a wide variety of aquatic plants, including stubborn duckweed. Treatments often last for several seasons, making it a cost effective treatment product. It works by stopping photosynthesis, which robs the plants of their ability to make food. Treated plants turn white and die within 6-12 weeks. Sonar effectively controls coontail, bladderwort, pondweed family, eurasion milfoil, fanwort, naiad, parrotfeather and select other aquatic plants. Sonar A.S. is a concentrated formula that is applied by mixing with water and spraying over the surface of the pond. Ideally the total amount needed is divided into two equal applications 10-14 days apart.
Sonar A.S. can be applied starting in early spring, at the first sign of weeds floating to the surface, through midsummer.
Best control is obtained when discharge can be stopped for thirty days or longer. Pond levels should be at or near normal when water level when treated. Excessive outflow dilutes Sonar A.S. and reduces the chance of control.
The dose for the first Sonar A.S. application is normally one (1) quart per surface acre depending upon depth (see product label). Use 1 ½ quarts of Sonar A.S. per surface-acre for watermeal.
*Consult label for exact doseage and treatment directions.
Due to Governmental Regulations, WE DO NOT SHIP ALGAECIDES OR HERBICIDES TO THE FOLLOWING STATES
Alaska - California - Connecticut - Delaware - Hawaii - New Hampshire - New Jersey - New York - Maine - Maryland - Massachusetts Oregon - Rhode Island - Washington State - Vermont (for additional information about these restrictions please see our shipping/returns page).
Sonar Products cannot be shipped to Michigan without a permit and applicators license on file.