General Information


Foxfire Herbicide may be applied in the following states: Minnesota, Montana, North Dakota, South Dakota and Wyoming. Foxfire Herbicide is a systemic, postemergence herbicide for the control of several grass weed species in all varieties of spring wheat (excluding durum) and winter wheat.

Foxfire Herbicide is rapidly absorbed by weed foliage and translocated to the growing points of leaves and stems where it inhibits the acetyl CoA carboxylase (ACCase) enzyme. Susceptible weed species generally stop growing within 48 hours of treatment, turn yellow within one to three weeks, and are completely controlled within three to five weeks. Level and rate of control depend on weed species, growing conditions, crop competition, and coverage.

Thorough spray coverage of the plants is essential for consistent control.

Although Foxfire Herbicide does not control broadleaf weeds, it can be tank mixed with a wide range of broadleaf herbicides to provide broad-spectrum one-pass weed control. See the section entitled Tank Mixes of Foxfire Herbicide with Broadleaf Weed Herbicides, Fungicides, and Insecticides. Herbicides not listed on the label for tank mixing with Foxfire Herbicide may be applied sequentially. Always apply Foxfire Herbicide first and allow at least 4 days after application of Foxfire Herbicide before applying these herbicides sequentially.

Weeds Controlled

Foxfire Herbicide controls green foxtail, yellow foxtail, giant foxtail, wild oat, volunteer oat, barnyardgrass, and wild proso millet.

Use Rates

Apply the specified rate of Foxfire Herbicide using ground or aerial equipment, in a minimum of 5 gals. of water per acre (see Ground and Aerial Application Procedures section for additional information).

When tank mixing broadleaf herbicides, refer to Tank Mixtures of Foxfire Herbicide with Broadleaf Weed Herbicides, Fungicides, and Insecticides section for exceptions and additional information on weeds controlled.

Management of Resistant Weeds

Foxfire Herbicide is a Group 1 Herbicide (ACCase mode of action). Some naturally occurring populations of grass weeds have been identified as resistant to herbicides with the ACCase mode of action. Selection of resistant biotypes, through repeated use of these herbicides in the same field, may result in control failures. A resistant biotype may be present if poor performance cannot be attributed to adverse weather conditions or improper application methods. If resistance is suspected, contact your local Syngenta representative for assistance.

The following practices will delay selection for resistant populations of weeds:

- Apply postemergence herbicides to small, actively growing weeds.

- Ensure that good spray coverage is achieved with proper spray volumes and calibrated equipment.

- Use the full label rate of product.

- Avoid tank mixes that may cause antagonism and reduced weed control.

- Where possible, avoid the repeated use of herbicides with the same mode of action (i.e., same group number) in successive seasons either in cereal crops or rotational crops.

- Use a diverse crop/fallow rotation to extend the range of available herbicides and agronomic practices.

- Use cultivation, fertilizer regimens, seeding rates and row widths that enhance crop competitiveness.

- Prevent weed escapes from producing seed either in the crop or during fallow periods.


Timing of Application

Apply Foxfire Herbicide to all varieties of spring wheat (excluding durum) and winter wheat from the 2-leaf stage to pre-boot stage. Refer to the Crop Use Directions section for grazing and harvest restrictions.

Precaution: Do not apply to a crop that is stressed by conditions such as frost, low fertility, drought, flooding, disease damage, or insect damage, as crop injury may result.

When tank mixing with a broadleaf herbicide, insecticide or fungicide, always refer to the label of the tank-mix partner prior to use.

For optimum results, apply Foxfire Herbicide to actively growing weeds. An early application will maximize crop yields by reducing weed competition. Weed control following application of Foxfire Herbicide alone or in combination with broadleaf herbicides can be reduced or delayed under conditions of stress, such as drought, heat, insufficient fertility, flooding, and prolonged cool temperatures. Grass escapes or re-tillering may occur if application is made during prolonged conditions of stress. Optimum weed control will be obtained if application of Foxfire Herbicide is delayed until the conditions of stress have ended and weeds are once again actively growing. Weeds emerging after Foxfire Herbicide application will not be controlled.


Weed Leaves on Main Stem Tillers

Green Foxtail, Yellow Foxtail, Giant Foxtail, Barnyardgrass, Wild Proso Millet: 1 to 5-leaf stage on main stem For optimum control, apply prior to emergence of the 3rd tiller and while weeds are actively growing.


Foxfire Herbicide applied alone is rainfast 1 hour after application.

Ground and Aerial Application Procedures

For best accuracy, calibrate the sprayer before use.

Ground Applications

Water Volume - Use a dilution rate of 5-10 gals. of water per acre. Use 10 gals. of water per acre under dry conditions or dense weed populations. Dilution rates of greater than 10 gals. of water per acre should be avoided as reduced grass control may occur.

Spray Nozzles - 80° or 110° fl at fan nozzles are recommended for optimum spray coverage. Nozzles must be uniformly spaced along the boom to provide accurate and uniform coverage. Point the nozzles forward in the direction of travel at an angle of 45° for optimum coverage of grass weeds. Follow the nozzle manufacturer’s recommendations for pressure and screens. Do not use flood or hollow cone type nozzles.

Screens - Use a screen or strainer with 16-mesh or coarser on the suction side of the pump. Do not place a screen in the recirculation line unless using a roller or piston pump. Use 50-mesh or coarser screens between the pump and boom, and at the nozzles.

Pressure - 35-40 psi at the nozzles. Lower pressure may be used with extended range or low pressure nozzles.

Pump - Must have capacity to maintain pressure (35-40 psi) and to maintain the product suspension through tank agitation. A centrifugal pump is recommended with an agitation rate of 20 gals./minute/100 gals. tank size.

Agitation must be maintained during mixing and spraying.

Good weed coverage with the spray mixture is essential for optimum weed control results. Observe sprayer nozzles frequently during the spraying operation to ensure that the spray pattern is uniform. Avoid large spray overlaps which result in excessive rates in the overlap areas. Also, avoid application under conditions when uniform coverage cannot be obtained or when excessive spray drift may occur. To reduce spray drift, do not apply under windy conditions. Allow adequate distance between target area and desirable vegetation to prevent drift to nontarget areas. Boom height for broadcast over-the-top application should be based upon the free-standing height of the crop, not height above the soil surface, and should be at least 12 inches above the crop.


Apply Foxfire Herbicide in water using a minimum spray volume of 5 gals./A. Avoid application under conditions where uniform coverage cannot be obtained or where excessive spray drift may occur. Make applications at a maximum height of 10 ft. above the crop with low-drift nozzles at a maximum pressure of 40 psi and wind speed not exceeding 10 mph to help assure accurate application within the target area.

Refer in the label for tank mix information.

Limitations, Restrictions, and Exceptions


Foxfi re Herbicide can be used on all varieties of spring wheat (excluding durum) and winter wheat. Do not allow spray to drift to adjacent fields seeded to crops other than wheat. Do not treat wheat underseeded to forages.

- Do not graze livestock or harvest forage for hay from treated wheat for a minimum of 30 days following application.

- Do not harvest grain for 60 days following application in Minnesota, Montana, North Dakota and South Dakota.

Do not harvest grain for 70 days following application in Wyoming.

- Wheat straw may be fed to livestock 60 days after application.

Restricted Entry Interval

48 hours