General Information


ANTARES HERBICIDE must be applied at the labeled rates and in accordance with label directions. Do not apply ANTARES HERBICIDE at rates less than those listed in this label. Observe target areas prior to treatment and apply ANTARES HERBICIDE when weeds are smaller.

If levels of control provided by applications of this product is reduced, and cannot be accounted for by factors such as misapplication, abnormal levels of target species or extremes of weather, it may be the case that target species have developed a strain resistant to applications of ANTARES HERBICIDE. If resistance develops, ANTARES HERBICIDE may not provide sufficient control of target species. Where you suspect target species are developing resistance, contact State/local agricultural advisors.

Certain species may develop resistance to this product/other herbicides where they are used repeatedly. Application of pesticide products therefore should be carried out in consultation with local/State agricultural advisors so that local resistance management strategies can be implemented.

In order to limit the possibility of resistance developing, apply ANTARES HERBICIDE in rotation with products that have a different mode of action and other classes of chemistry.


ANTARES HERBICIDE is a soil-applied selective herbicide. It will control listed grasses, sedges and broadleaf weeds.

ANTARES HERBICIDE is a flowable product that contains 4 pounds of active ingredient (sulfentrazone) per gallon.

The active ingredient sulfentrazone inhibits an enzyme required by plants in order to produce chlorophyll. Inhibiting this enzyme leads to the release of singlet oxygen (O) which then disrupts cellular membranes, resulting in cellular leakage and cellular death ultimately resulting in plant death.

ANTARES HERBICIDE has a selective mode of action because sulfentrazone has a greater affinity for the PPO IX enzyme in listed weed species as opposed to listed crops.

ANTARES HERBICIDE must be prepared and used in such a way so as to prevent the following:
- spills
- improper disposal of spray mixtures, rinsate or any excess pesticide
- back siphoning in wells

The following activities must not be carried out within 50 feet of any well (including drainage and abandoned wells) unless the activity is carried out on an impervious pad that has been built to withstand the heaviest possible weight that will be moved across the pad or placed upon it:
- Loading
- Mixing
- Washing/rinsing ANTARES HERBICIDE from application equipment

The impervious pad must be made to contain any leaks or spills, as well as any rinsate/washwaters and rain that may fall upon it.

An impervious pad that does not have a roof must have enough capacity to contain a minimum of 110% of the volume of the largest container that will be placed on the pad. Those pads that are covered by a roof must have enough capacity to contain a minimum of 100% of the volume of the largest container that will be placed on the pad. The roof must be big enough to completely exclude contact with the pad from rainfall.

The above containment volume minimum must be maintained. The minimum capacity volumes do not apply to the following:
- Vehicles delivering pesticide product to the load/mix area

Applicators must ensure that they are aware of any State requirements for containment and set back from wells.
The impervious pad must be self-contained so that surface water cannot flow over or from one pad. They must also be sloped to allow for material removal.

Do not load or mix ANTARES HERBICIDE within 50 feet of any sinkholes, reservoirs, impounded or natural lakes, wells (including drainage and abandoned wells) or intermittent/perennial rivers and streams. This restriction does not apply where there are properly diked loading/mixing areas or impervious pads. The restriction also does not apply where abandoned wells are properly plugged or capped.

Apply this product in one of the following ways:
- as a surface application, pre-emergence treatment (i.e. before crop and/or weed emergence)
- as a incorporated treatment prior to planting
- Post-plant application
- Over-the-top
- Layby

For further detail, refer to the Crop Specific Use Directions below.
When ANTARES HERBICIDE is used as an incorporated treatment, the product must be incorporated following a uniform surface application to a depth of 2 inches maximum. If it is incorporated to a greater depth, reduced control of target species may result. Applicators must ensure that there is no overlap between areas that have been treated with ANTARES HERBICIDE due to soil movement. Such an overlap could cause an adverse crop response.

When ANTARES HERBICIDE is soil applied or applied as a post-plant treatment, the herbicidal action of the product must be activated by moisture. The amount of moisture required depends upon a number of factors including:
- soil type
- organic matter content
- tilth
- existing soil moisture at the time of treatment

For an effective application of ANTARES HERBICIDE, 0.5 to 1 inch of irrigation or rainfall is required within 7 to 10 days following treatment. If that level of moisture is not received, shallow incorporation must be undertaken in order to obtain sufficient control of target species. Activating moisture can be delayed for 10-14 days, and sometimes longer, depending on the factors listed above. If activating moisture is delayed, however, control of listed species may be reduced, due to the growth of weeds during the delay.

When ANTARES HERBICIDE has been activated, it will provide control of listed weed species. The level of control will depend on the size and type of weed species when ANTARES HERBICIDE is activated. The control of listed germinating weed species will be reduced when rain or irrigation follows a period of dry weather.

Apply ANTARES HERBICIDE prior to the germination of crop seeds in order to avoid damage to emerging seedlings. Crop damage may occur where treatment is delayed if seeds are germinating, or are close to the soil surface.

If ANTARES HERBICIDE is applied by surface application and activation has not been triggered by rainfall, or irrigation (1/2” to 1” moisture) within 10 days of treatment, make a shallow incorporation (less than 2”) of the product so that germinating weed species can be controlled. Soil incorporation will also facilitate product activation with existing soil moisture.

Where there is prolonged periods when rainfall/irrigation is not available, alternative weed control methods should be considered.

Follow Crop Specific Use Directions exactly and with care, particularly for post plant treatments.

Lay-by/Over-the-top applications provide control of listed species through contact and residual control (depending on weed species).

Combining this product with a surfactant may improve control of listed species, but may also increase the risk of crop injury.

Applicators must be aware that certain crops will react differently to treatment with ANTARES HERBICIDE according to the following factors:
- use rate
- specific crop species sensitivity
- soil composition

Once a treatment with ANTARES HERBICIDE has been made, seedlings and germinating seeds absorb sulfentrazone from the soil solution. The amount of available active ingredient contained in the soil solution, is determined by the following factors:
- soil type
- soil pH
- soil organic matter content

Sulfentrazone is absorbed by the organic matter and clay parts of soils. This absorption reduces the amount of active ingredient available for weed uptake. Clay content in soil tends to increase as the soil gets finer.

The organic matter in soil will vary widely within soil classifications. In order to assess organic matter soil content, a detailed analysis will be required.

The amount of sulfentrazone available for uptake by weed species will increase as the pH of the soil increases. The pH of the soil must be accurately assessed using representative soil samples. In addition, irrigation with water with a high pH (i.e. alkaline water) following treatment, will increase the amount of available sulfentrazone for uptake by target species. However, if irrigation water pH exceeds 7.5, crop damage may result. The likelihood of an adverse response by crops will decrease as the growth stage of crops advances.

The use rate of this product will be determined by the following factors:
- Timing of treatment
- The amount of activating moisture (rainfall/irrigation)
- Soil parameters
- Soil pH

The Crop Specific Use Directions (below) for each crop, are based on:
- soil type
- soil organic matter
- soil pH interactions

The performance of ANTARES HERBICIDE and crop tolerance is based on strictly following the Crop Specific Use Directions.

Application by Air
- Apply ANTARES HERBICIDE using appropriate nozzles that will allow for optimal coverage, will minimize drift and will keep fine spray droplets to a minimum.
- Apply ANTARES HERBICIDE in an appropriate volume for sufficient coverage. Use minimum spray volume of 5 gallons per acre.
- Do not apply ANTARES HERBICIDE when wind speed is likely to cause drift outside the target area.

Application by Ground
- Apply ANTARES HERBICIDE using a boom and nozzle sprayer with the appropriate spray tips, screens and nozzles.

Application equipment must be calibrated for optimal coverage and spray distribution at the appropriate pressure.
- Use spray nozzles that will minimize drift by keeping fine spray droplets to a minimum.
- Apply ANTARES HERBICIDE in a minimum spray volume of 10 gallons per acre. Avoid overlapping applications which may result in excessive treatment and adverse crop response. When starting, turning or stopping, slower ground speed of application equipment may also lead to excessive treatment.
- Do not apply ANTARES HERBICIDE when wind speed is likely to cause drift outside the target area.

Chemigation Application
ANTARES HERBICIDE may be applied through sprinkler irrigation systems including center pivot, lateral move, end tow, solid set, or hand move irrigation systems. Do not apply this product through any other type of irrigation system. Do not connect any irrigation system (including greenhouse systems) used for pesticide application to a public water system. Crop injury, lack of effectiveness or illegal residues on or in the crop can result from non-uniform distribution of treated water. If you have questions about calibration, you should contact State Extension Service specialists, equipment manufacturers, or other experts. A person knowledgeable of the chemigation system and responsible for its operation, or under the supervision of the responsible person, shall shut the system down and make necessary adjustments should the need arise.

The system must contain a functional check valve, vacuum relief valve, and low-pressure drain appropriately located on the irrigation pipeline to prevent water source contamination from backflow. The pesticide injection pipeline must also contain a functional, automatic, quick-closing check valve to prevent the flow of fluid back toward the injection pump. The pesticide injection pipeline must also contain a functional, normally closed, solenoid-operated valve located on the intake side of the injection pump and connected to the system interlock to prevent fluid from being withdrawn from the supply tank when the irrigation system is either automatically or manually shut down. The system must contain functional interlocking controls to automatically shut off the pesticide injection pump when the water pump motor stops. The irrigation line or water pump must include a functional pressure switch, which will stop the water pump motor when the water pressure decreases to the point where pesticide distribution is adversely affected.

Systems must use a metering pump, such as a positive displacement injection pump (e.g., diaphragm pump) effectively designed and constructed of materials that are compatible with pesticides and capable of being fitted with a system interlock.

ANTARES HERBICIDE should be metered into the irrigation system continuously for the duration of the water application.

ANTARES HERBICIDE should be diluted in sufficient volume to insure accurate application over the area to be treated. Use the appropriate amount of water to carry the product to the soil surface. Continuous agitation is required to maintain product suspension in the solution tank. A jar test should be conducted to ensure that phase separation would not occur during dilution and application. Failure to achieve a uniform dilution throughout the time of application may result in undesirable residues or less than desirable weed control. Flush the lines at the completion of the application and then turn the water off promptly.

When using water from public water systems; DO NOT APPLY ANTARES HERBICIDE THROUGH ANY IRRIGATION SYSTEM PHYSICALLY CONNECTED TO A PUBLIC WATER SYSTEM. Public water system means a system for the provision to the public of piped water for human consumption if such system has at least 15 service connections or regularly serves an average of at least 25 individuals daily at least 60 days of the year. ANTARES HERBICIDE may be applied through irrigation systems, which may be supplied by a public water system only if water from the water system is discharged into a reservoir tank prior to pesticide introduction. There shall be a complete physical break (air gap) between the outlet end of the fill pipe and to top or overflow rim of the reservoir tank of at least twice the inside diameter of the fill pipe. Before beginning chemigation, always make sure that the air gap exists and that there is no blockage of the overflow of the reservoir tank.

Crop response to treatment with ANTARES HERBICIDE will depend on the following factors:
- application rate and timing
- volume of water applied and pH
- sensitivity of crop type to treatment with ANTARES HERBICIDE
- growth stage of the crop when irrigated

The amount of sulfentrazone available for uptake by weed species will increase as the pH of the soil increases. The pH of the soil must be accurately assessed using representative soil samples. In addition, irrigation with water with a high pH (i.e. alkaline water) following treatment, will increase the amount of available sulfentrazone for uptake by target species. However, if irrigation water pH exceeds 7.5, crop damage may result. The likelihood of an adverse response by crops will decrease as the growth stage of crops advances.

Application in Combination with Dry Fertilizers
- ANTARES HERBICIDE may be impregnated on and applied in conjunction with a dry bulk fertilizer.
- Only apply combinations of this product and dry fertilizer with ground equipment.
- Do not apply via aerial application.
- Applicators using dry fertilizer must follow state regulations on the preparation of the ANTARES HERBICIDE/fertilizer combination, including mixture preparation, storage, transportation, selling and treatment.

Application in Combination with Liquid Fertilizers
- ANTARES HERBICIDE, when applied in combination with a liquid fertilizer will provide control of listed weeds.
- Sufficient soil coverage is crucial for control of target species.
- Fertilizer solutions that may be used as a carrier for ANTARES HERBICIDE may be concentrate formulations as blended or diluted in water.

Band Treatment Applications
ANTARES HERBICIDE can be applied as a banded treatment application.

- During replanting, keep soil tillage to a minimum so that the herbicide barrier is preserved, thereby maximizing weed control.
- In the event that the planting of crops listed in label directions does not produce a stand, only crops specified in this label or the tank mix partner may be planted. Where there is a tank mixture, the most restrictive label directions must be followed.
- The planted area must not be retreated with ANTARES HERBICIDE or any other product containing sulfentrazone.
- Do not plant crops in previously treated areas unless in full compliance with the Rotational Restrictions in the label.

Crop Rotation: Refer to the table below for the minimum interval from the time ANTARES HERBICIDE was last applied until treated areas can be replanted with listed crops.
- Certain crops have a rotational interval of more than 12 months because of sensitivity and the risk of crop injury. Carry out a representative bioassay of the target area on the rotational crop in order to assess the crop's sensitivity to applications of this product.
- For all crops not listed in the table above, there must be a minimum rotational interval of 12 months.
- When this product is tank mixed with another product(s), read and follow the directions of all tanks mix partners. The most restrictive directions must apply, including directions for re-cropping.

Limitations, Restrictions, and Exceptions


To control susceptible weeds, ANTARES HERBICIDE can be applied preemergence to succulent lima beans (TN only).

OM – Organic Matter
Consult preceding information regarding Coarse, Medium or Fine soil categories.

Use rate is inversely dependent on soil pH – use higher ANTARES HERBICIDE rates with lower soil pH rates (7.0 and lower) and lower ANTARES HERBICIDE rates with higher soil pH rates (greater than 7.0).

Application Instructions

Apply amount of ANTARES HERBICIDE indicated above as a preemergence treatment. Apply product in at least 10 gallons of finished spray per acre. Make application with ground equipment.


- Read and follow all precautions, instructions, rotational crop guidelines, replanting instructions, and any other information on this label prior to use.

- Consult with university or extension weed management specialists for information on using ANTARES HERBICIDE with specific local varieties or cultivars of lima beans.

- Do not apply more than 0.1875 lbs sulfentrazone (6.0 fl. oz. product) per acre per 12 month period. The 12 month period starts at the point of first application.

- Wait a minimum of 7 days after application to plant in coarse textured soils with less than 1.5% organic matter.

- Reduce rate of ANTARES HERBICIDE on coarse textured soil with organic matter <1.5% and pH of 7.8 or higher, or on highly eroded soils, or in areas of calcareous outcroppings to minimize adverse crop response.

- Planting less than 1 inch in depth or inadequate seed furrow closure or poor growing conditions (diseases, low temperature, soil compaction, excessive moisture) can also cause adverse crop response.

- Reduced weed control can occur if crop is experiencing extended periods of dry weather.

- Do not incorporate ANTARES HERBICIDE into the soil when using product on lima beans (TN).

Restricted Entry Interval

12 hours