Description
Whole-Waterbody Control for Susceptible Pond and Lake Weeds
Sonar® A.S. is built for buyers who need systemic, whole-waterbody weed control instead of quick burn-down. Its liquid fluridone formulation disperses through treated water, making it a strong fit for ponds, lakes, reservoirs, and qualifying canals where the labeled concentration can be maintained long enough for control. That concentration-based approach is especially useful in minimal-flow water.
Key Features & Benefits
| Feature |
Benefit |
| Liquid aqueous solution |
Spreads through treated water for whole-site programs. |
| 41.7% fluridone |
Provides systemic control of susceptible aquatic weeds. |
| Minimal-flow fit |
Best for sites that can hold the labeled concentration. |
| Selective-use potential |
Lower ppb programs can support more selective goals. |
| No algae control |
Helps you plan a complementary algae strategy. |
Directions & Dosing Snapshot
| Use Case |
Label Rate |
Application Notes |
| Ponds, single application |
45 to 90 ppb |
Use the higher end for dense weed mass, harder species, or smaller shallow ponds; annual total must not exceed 90 ppb. |
| Whole lakes or reservoirs, single application |
10 to 90 ppb |
Choose the rate that matches the management goal. |
| Whole lakes or reservoirs, split or multiple program |
Initial 4 to 50 ppb |
Maintain concentration for at least 45 days; annual total must not exceed 150 ppb. |
| Partial lake or reservoir treatment more than ¼ mile from a functioning potable water intake |
30 to 150 ppb |
Use the higher end where dilution with untreated water is expected. |
| Treatment area within ¼ mile of a functioning potable water intake |
No single application above 20 ppb |
Split or multiple programs require a FasTEST; annual total must not exceed 150 ppb. |
| Static drainage or irrigation canals |
30 to 150 ppb per treated surface acre |
Maximum annual total is 150 ppb. |
| Moving water canals |
Maintain 15 to 40 ppb |
Restrict or reduce flow when possible and hold concentration for at least 45 days. |
| Rate formula and dry or de-watered sediments |
Average water depth (ft) × desired ppb × 0.0027; dry sediments: max 2 qt per surface acre |
Multiply quarts by 32 for fluid ounces; dry sites use 30 to 100 gallons of spray solution per surface acre. |
Alligare Fluridone 45 ppb and 90 ppb Single Application Rate Example
This chart is an example for Single Application to Whole Lakes or Reservoirs. Rates are shown per treated surface acre by average water depth and target concentration.
Alligare Fluridone per treated surface acre to achieve 45 ppb or 90 ppb
| Average Water Depthof Treatment Site(feet) |
Fluid Ounces of Alligare Fluridoneper Treated Surface Acre |
Quarts of Alligare Fluridoneper Treated Surface Acre |
| 45 ppb |
90 ppb |
45 ppb |
90 ppb |
| 1 |
3.8 |
7.7 |
0.12 |
0.24 |
| 2 |
7.7 |
15.7 |
0.24 |
0.49 |
| 3 |
11.8 |
23.4 |
0.37 |
0.73 |
| 4 |
15.7 |
31.4 |
0.49 |
0.98 |
| 5 |
19.5 |
39.0 |
0.61 |
1.22 |
| 6 |
23.4 |
46.7 |
0.73 |
1.46 |
| 7 |
27.2 |
54.4 |
0.85 |
1.70 |
| 8 |
31.4 |
62.4 |
0.98 |
1.95 |
| 9 |
35.2 |
70.1 |
1.10 |
2.19 |
| 10 |
39.0 |
78.1 |
1.22 |
2.44 |
| 11 |
43.0 |
86.0 |
1.34 |
2.68 |
| 12 |
46.9 |
93.8 |
1.47 |
2.93 |
| 13 |
50.7 |
101.4 |
1.59 |
3.17 |
| 14 |
54.7 |
109.4 |
1.71 |
3.42 |
| 15 |
58.6 |
117.1 |
1.83 |
3.66 |
| 16 |
62.4 |
124.8 |
1.95 |
3.90 |
| 17 |
66.1 |
132.2 |
2.08 |
4.15 |
| 18 |
70.3 |
140.5 |
2.20 |
4.39 |
| 19 |
74.1 |
148.2 |
2.32 |
4.63 |
| 20 |
78.1 |
156.2 |
2.44 |
4.88 |
Label reminder: This chart is an example only for single application planning. Refer to the official Alligare Fluridone product label before application for complete directions, restrictions, annual maximums, potable-water intake rules, irrigation limitations, use-site limitations, and any state or local requirements.
Comparison Table
|
Sonar® A.S. |
Slow-release pellet fluridone program |
Contact aquatic herbicide treatment |
Biological pond-treatment program |
| Control style |
Systemic fluridone in treated water |
Systemic fluridone, slow release |
Varies by chemistry and label |
Microbial maintenance |
| Best fit |
Whole-pond or lake treatment in minimal flow |
Flow-challenged fluridone planning |
Spot-treatment goals; varies by label |
Organic-load support |
| Timing profile |
Symptoms 7 to 10 days; management can take 30 to 90 days |
Varies by label |
Varies by chemistry and label |
Gradual program |
| Algae control |
No |
No |
Varies by chemistry and label |
Indirect only |
| Dosing logic |
ppb and water-depth based |
Product-specific and label-based |
Product-specific and label-based |
Routine schedule |
Why Choose a systemic aquatic herbicide?
- Whole-waterbody reach: Sonar® A.S. disperses through treated water instead of only affecting what it directly touches.
- Planning flexibility: The label lets you match the program to water depth, treatment area, water movement, and selectivity goals.
- Long-game control: When the labeled concentration is maintained long enough, Sonar® A.S. supports extended management instead of short-lived top growth suppression.
