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
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.
Sonar should not be used for spot