Flumigard Herbicide | Aquatic Weed Control

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Flumigard Water Dispersible Granule Herbicide is a specially formulated herbicide that’s designed to help control invasive and nuisance aquatic weeds such as water lettuce, duckweed, cabomba, watermeal, giant salvinia, Eurasian watermilfoil, and more. This fast-acting contact herbicide uses Flumioxazin as its active ingredient for an effective management of undesirable aquatic vegetation in slow moving or quiescent waters. It offers reduced PPE requirements in a water dispersible granule formulation for easier handling and application. It also doesn't accumulate in sediment because it dissipates fast from the water column. It's ideal to use in bayous, canals, drainage ditches, lakes, marshes, ponds (including golf course ponds), and reservoirs.

Currently registered in the following states: AL, AK, AZ, CA, CO, CT, DE, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, ME, MD, MA, MN, MI, MS, MO, MT, NE, NV, NH, NJ, NM, ND, NC, OR, OH, OK, PA, PR, RI, SD, SC, TN, TX, UT, VA, VT, WV, WA, WA, DC, WI, WY, WV - NOT FOR SALE TO: NY, AK, HI


Mixing Instructions

Mix with water having pH of 5 to 7. If pH is higher than 7, use an appropriate buffer to reduce pH to desirable range.
Fill clean spray tank 1/2 full of desired level with water and add buffering agent if necessary.
Add the required amount of Flumigard Herbicide to the spray tank while agitating.
Fill spray tank to desired level with water. Ensure that Flumigard Herbicide is thoroughly mixed before making applications. Agitation should continue until spray solution has been applied.
Mix only the amount of spray solution that can be applied the day of mixing. Apply Flumigard Herbicide within 12 hours of mixing.
Volume and Pressure

Apply Flumigard Herbicide in 5 gals of water per acre, with a maximum spray pressure of 40 PSI. Application at less than 5 gals per acre may not provide adequate weed control. Higher gallonage applications generally provide more consistent weed control.

Nozzles and Nozzle Operation

Use nozzles that produce flat or hollow cone spray patterns. Use non-drip type nozzles such as diaphragm type nozzles to avoid unwanted discharge of spray solution. The nozzle must be directed toward the rear of the aircraft, at an angle between 0 degrees and 15 degrees downward. Do not place nozzles on the outer 25% of the wings or rotors.

Surface Application

Apply Flumigard Herbicide as a broadcast spray at 6 to 12 ounces of formulated product per acre plus an adjuvant approved for use in aquatics. Apply Flumigard Herbicide in a minimum of 30 gals of water per acre to all areas of the water body where weeds exist. Coverage is essential for effective control as all floating weeds need to be exposed to lethal concentrations in all parts of the water body. Any untreated escapes or re-introductions of plants that were not treated will reestablish in areas where surface weeds had previously been controlled. If a second application is required to provide control, it is recommended that a treatment be made once the return of these weeds is first observed, but no sooner than 28 days after the last treatment.

Flumigard Herbicide may be tank mixed with 2,4-D, diquat, glyphosate or other registered foliar applied herbicides for enhanced control of floating and emergent weeds. Consult a manufacturer’s label for specific rate restrictions and weeds controlled. Always follow the most restrictive label restrictions and precautions for all products used when making an application involving tank mixes.

Subsurface Application

Apply Flumigard Herbicide at a rate that will produce an initial concentration of 200 to 400 ppb (of active ingredient flumioxazin) in the water column. Flumigard Herbicide is rapidly absorbed by target plants, but also breaks down quickly in water with a pH greater than 8.5. The pH of water surrounding mats of submersed vegetation can exceed 8.5 by early to mid-day, due to photosynthetic processes. Application of Flumigard Herbicide under these conditions may provide only partial weed control, and regrowth is likely. For best control, apply Flumigard Herbicide in a minimum of 30 gals of water per acre in the early morning to actively growing weeds and early in the season before surface matting occurs.

Active Ingredient: Flumioxazin - 51%

Target pests: Alligator Weed, Frogs-bit, Water Fern, Water Lettuce, Water Pennywort, Filamentous Algae, Coontail, Duckweed, Fanwort, Hydrilla, Pondweed, Water Fern, Water Lettuce, Watermeal, Watermilfoil and others 

For use in: Bayous, Canals, Lakes, Marshes, Ponds (including Golf Course Ponds), Reservoirs
* Not registered for range and pasture use

Application: * See label for complete application instructions
Pet safe: Yes, if used as directed on label
Formulation: Professional Product
Group 14 Herbicide
5 lb Container

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