General Information


Strongarm herbicide is a soil-applied product for control of broadleaf weeds in peanuts. Strongarm may be applied preplant incorporated, preplant surface, or preemergence through cracking in peanuts. \"Cracking\" of soil occurs when soil is displaced by germinating seedlings just prior to emergence.

General Use Precautions and Restrictions

- Read and carefully follow all applicable directions, precautions and restrictions on labeling for other products used in combination with Strongarm.

- Aerial application of this product is prohibited.

- Do not allow livestock to graze treated areas or harvest forage or hay from treated areas.

- Chemigation: Do not apply this product through any type of irrigation system.

- Do not use flood irrigation to apply or incorporate this product.

- This product must be used in a manner that will prevent back siphoning in wells, spills or improper disposal of excess pesticide, spray mixtures or rinsates.

- In peanuts, do not apply more than 0.45 oz of Strongarm per acre per year in any combination of preplant incorporated, preplant surface, preemergence through cracking applications.

- Do not apply Strongarm to peanuts in the states of New Mexico, Oklahoma and Texas.

- Iron Chlorosis: There are isolated areas of the country where soil induced iron chlorosis routinely occurs. Severity of iron chlorosis symptoms may increase when Strongarm is soil-applied in areas with a history of soil-induced iron chlorosis or other nutrient induced crop injury.

Handling Precautions for Water Soluble Packets: Do not remove water soluble packet from the overpack except for immediate use. Do not allow water soluble packets to come into contact with water prior to use. Do not handle water soluble packets with wet hands or wet gloves. Do not open water soluble packets (product in transparent film). Partial use of packets is not allowed. Carefully reseal package containing unopened water soluble packets and protect package from moisture.

Strongarm Applied Alone

Water dispersible granules of Strongarm are packaged in water soluble packets. Thorough mixing prior to and during application is required.

Application with Dry Bulk Fertilizer (Soil Application Only)

Dry bulk fertilizer may be impregnated or coated with Strongarm. Soil applications of dry bulk fertilizer impregnated with Strongarm provides weed control equal to the same rates of Strongarm applied in liquid carriers. Follow label recommendations for Strongarm regarding rates per acre, special instructions, precautions and limitations for soil application.

Apply 300 to 700 lb per acre of fertilizer/herbicide mixture. Apply the mixture uniformly to the soil with properly calibrated equipment immediately after blending. Uniform application of the herbicide/fertilizer mixture is essential for satisfactory weed control and to prevent possible crop injury. Non-uniform application may also result in unsatisfactory weed control. In areas where conventional tillage is practiced, a shallow soil incorporation of the mixture may improve weed control.

Most absorbent dry fertilizers can be used for impregnation with Strongarm. Pure ammonium nitrate and/or limestone will not absorb the herbicide and are not suitable for impregnation with Strongarm.

Absorbent fertilizer blends containing a mixture of ammonium nitrate and/or limestone as part of the fertilizer mixture may be impregnated.

Compliance with all federal and state regulations relating to blending pesticide mixtures with dry bulk fertilizer, registration, labeling and application are the responsibility of the individual and/or company offering the fertilizer and chemical mixture for sale.

Impregnation: Strongarm must be pre-mixed with water to form a slurry prior to impregnation of dry bulk fertilizer. For best results, use a minimum of 6 fl oz of water for each individual 0.45 oz water soluble packet of product. Pre-mixing can be accomplished by shaking the water soluble packets and water together in a closed container. A small amount of a silicon-based defoaming agent may also be needed. Make sure Strongarm is completely and uniformly dispersed in water and the water soluble packaging has completely dissolved. Add sufficient water to adjust the total volume of the mixture to deliver a spray volume of 0.5 to 1 gallons of fertilizer per ton. Nozzles used to spray Strongarm onto the fertilizer should be placed to provide uniform spray coverage. Use constant agitation to keep the spray mixture suspended.

Limitations, Restrictions, and Exceptions


(All Areas Except New Mexico, Oklahoma and Texas)

Apply with ground equipment using a standard low pressure (20 to 40 psi) herbicide sprayer equipped with nozzles that provide uniform spray coverage. A spray volume of 10 gallons or more per acre is recommended for soil applications. Use sufficient spray volume to provide uniform coverage. Maintain sufficient agitation during mixing and spraying to ensure a uniform spray mixture. Screens in spray lines and nozzles should be no finer than 50 mesh (100 mesh is finer than 50 mesh).

Application Methods for Soil Applications

Strongarm may be used in various tillage programs including, but not limited to, strip till, no till and conventional tillage operations. Application of Strongarm on soils with greater than 5% organic matter may result in reduced weed control and require subsequent postemergence applications of other herbicides appropriate for specific weeds. Do not use on peat or muck soils. Season-long control of severe weed infestations may require a postemergence application of complimentary herbicides following application of Strongarm.

For best results, fields should be clean-tilled and weed-free. Apply Strongarm as close as possible to planting. If irrigation is available, immediately apply 0.25 to 0.5 inches of water (apply a minimum of 0.5 inches of water if soil conditions are dry). Cultivation, a tank mixture, or applications of postemergence herbicides may also be needed to achieve the desired level of control. If cultivation is required, it should be shallow to avoid excessive movement of treated soil and to avoid exposing w eed seed buried deep within the soil.

Note: Environmental and soil factors can influence the performance and selectivity of any herbicide treatment. Rainfall of 0.5 inches or greater is required for optimum weed control by most soil herbicides, including Strongarm. When incorporated, Strongarm and other herbicides will perform most optimally when evenly distributed in the surface soil. When emergence of the planted crop is delayed due to unusually cool and/or wet conditions, factors such as pH, disease, and nutrient deficiencies can contribute to reduced crop tolerance to a soil-applied herbicide.

Strongarm Followed by Postemergence Treatments

Weeds and grasses not controlled by Strongarm may be controlled with postemergence herbicide products. Follow the postemergence manufacturer’s label for application rates, weeds controlled, applicable use directions, precautions and limitations before use.

Minimum Tillage, No Tillage, Strip Tillage, or Other Reduced Tillage Systems

In these tillage systems, where peanuts are planted directly into a cover crop, stale seedbed, or previous crop residues, a burndown herbicide such as Gramoxone Max, Roundup WeatherMAX, Glyphomax XRT, or Durango may be tank mixed with Strongarm to control existing weeds. Do not rely on Strongarm for postemergence control of emerged weeds. Apply before, during (behind the planter), or after planting through cracking. If applying at cracking, insure that any tank mix partner being used is labeled for this application.

Pre-Harvest Interval

30 days

Restricted Entry Interval

12 hours