Active Ingredients: 5% Fluridone
Manufacturer: SePRO Corporation
SONAR PR is an herbicide for management of aquatic vegetation in fresh water ponds, lakes, reservoirs, potable water sources, drainage canals, irrigation canals and rivers.
SONAR Precision Release herbicide is a selective systemic aquatic herbicide for management of aquatic vegetation in fresh water ponds, lakes, reservoirs, drainage canals, irrigation canals, and rivers. SONAR PR is a pelleted formulation containing 5% fluridone. SONAR PR is absorbed from water by plant shoots and from hydrosoil by the roots of aquatic vascular plants. It is important to maintain SONAR PR in contact with the target plants for as long as possible.
Rapid water movement or any condition which results in rapid dilution of SONAR PR in treated water will reduce its effectiveness. In susceptible plants, SONAR PR inhibits the formation of carotene. In the absence of carotene, chlorophyll is rapidly degraded by sunlight. Herbicidal symptoms of SONAR PR appear in seven to ten days and appear as white (chlorotic) or pink growing points. Under optimum conditions 30 to 90 days are required before the desired level of aquatic weed management is achieved with SONAR PR. Species susceptibility to SONAR PR may vary depending on time of year, stage of growth and water movement. For best results, apply SONAR PR prior to initiation of weed growth or when weeds begin active growth. Application to mature target plants may require higher application rates and may take longer to control.