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Product Label MSDS Sheet

Sonar PR Precision Release Aquatic Herbicide provides a fast, predictable release of active ingredient in a convenient and economical formulation for the precise management of aquatic vegetation in fresh water ponds, lakes, reservoirs, potable water sources, drainage canals, irrigation canals, and rivers.

Sonar PR Precision Release brings improved efficacy, broader treatment sites and increased monitoring capability. Sonar PR Precision Release delivers a higher initial active ingredient concentration than Sonar SRP while maintaining a higher concentration for a longer period after the initial application than both Sonar A.S. and SRP.

This combination provides improved efficacy in an even wider variety of challenging situations such as aquatic situations with dilution, flow, or more tolerant target plants. With Sonar PR Precision Release, more active ingredient is available throughout the treatment period, improving treatment monitoring options and increasing control of more tolerant plants.

Finally, with the increased release rate of Sonar PR Precision Release from the bottom of the water column where it is already less susceptible to photo-degradation, a maximum amount of active ingredient is available for absorption by the target plants.

Sonar Aquatic Herbicide selectivity is dependent upon dosage, time of year, stage of growth, method of application and water movement.

Application

To apply, determine the volume of water to be treated in acre-feet. Use 5-10 (45 ppb - 90 ppb) pounds of Sonar™ PR per 2.0 acre-feet (2.5-5 pounds per 1.0 acre/ft) for POND* applications. Simply broadcast uniformly over surface by hand or by using a mechanical spreader.

*Whole lake and reservoir treatment application rates differ. Please see label for application rates

Water treated with Sonar™ PR should not be used for irrigation for 30 days following treatment.

Examples using Sonar™ PR granular at higher label rates. Many submersed weeds can be controlled at much lower rates.

  • Sample 75' x 75' Pond (.13) Acre 4 ft avg depth - Amount required: 1.3-2.6 Pounds
  • Sample 105' x 105' Pond (.25) Acre 4 ft avg depth - Amount required: 2.5-5 Pounds
  • Sample 148' x 148' Pond (.50) Acre 4 ft avg depth - Amount required: 5-10 Pounds
  • Sample 208' x 208' Pond (1.0) Acre 4 ft avg depth - Amount required: 10-20 Pounds

*Consult label for exact dosage and dilution rates. Examples shown above assume duckweed is present.

Notices

Sonar should not be used for spot treating.

Size

Ordering

30 lb. pail. Online Purchase Not Available.
Call 1-800-442-6648

 

Effectiveness

DUCKWEED Good
AMERICAN LOTUS Good
BLADDERWORT Good
VARIOUS PONDWEEDS Good
COONTAIL Good
ELODEA Good
HYDRILLA Good
MILFOIL Good
SPATTERDOCK Good
WATER SHIELD Good
WATER WILLOW Good
WATERMEAL Good
WHITE WATER LILY Good
PLANKTONIC ALGAE Fair
CATTAILS Fair
PARROT FEATHER Fair
SMARTWEED Fair
WATER PRIMROSE Fair

 

Water Use Restrictions

Active Ingredients:Fluridone
Weight % Active Ingredient: 5.0
EPA Reg.No. 67690-12
Number of Days
Human Drinking 0**
Human Swimming 0
Human Fish Consumption 0
Animal Drinking 0
Turf Irrigation 30***
Forage Irrigation 30***
Food Crop Irrigation 30***
** See label for distance allowed from potable water *** Voluntary restrictions suggested by manufacturer

*All pesticides can be harmful to health and the environment if misused. Read the label and follow directions. Consult with your local regulatory agency before applying herbicides and algaecides to public waters. There are herbicides from other states that are either not licensed in Wisconsin or Illinois, or are not recommended by ABI.

A WI DNR Aquatic Plant Control Permit or DATCP Fish Farm License is required in WI in order to apply algaecides or herbicides. In addition ponds and lakes with overflows not contained on the property are required to obtain a WPDES permit. Illinois Residents are required to obtiain NPDES permits through the Illinois EPA.

In order to apply chemicals in liquid form within Wisconsin, the applicator must be licensed with the State.

Recommendations of pesticide or treatments for specific algae or aquatic plants are provided for general information purposes only - no warranties are expressed or implied.

* We do not ship EPA registered 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 shipping or terms and conditions).

 

Michigan Shipments

Aquathol K, Reward, Weedtrine D, & Sonar products can not be shipped without a permit on file.

30# Pails Ship LTL Frieght