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Can control weeds up to one full year.
Sonar controls target weeds in almost any body of water, including lakes, reservoirs, ponds, canals and rivers. During the typical treatment season, it takes 30 to 90 days for Sonar to work. Susceptible plants absorb Sonar through their leaves, shoots and from the hydrosoil by way of the roots.
Within a short period (seven to ten days) injury symptoms begin to appear. Susceptible weeds will start to show chlorosis, an abnormal plant condition characterized by an absence or deficiency of green pigment. Sonar's selectivity lets desirable aquatic plants become reestablished. Yet, as effective as Sonar is on target water weeds, it won't restrict swimming, fishing or drinking, even immediately after application.
Available in liquid pint or 40-lb pail of slow release granules. Rates depend on target species and habitat conditions. As always, follow label rates and restrictions.
International customers: Check with your customs agent to determine whether this product can be shipped to your country.