General Information



ACEPHATE 97 WDG is an insecticide for control of pests on selected agricultural crops and in certain non-crop areas.

The active ingredient in ACEPHATE 97 WDG is acephate, a water soluble insecticide readily absorbed by plant roots and foliage to give systemic control of feeding insects. Insect pests are controlled more effectively by ACEPHATE 97 WDG through ingestion than by contact. Application of ACEPHATE 97 WDG to maintain control should be repeated only as directed by the label.


NOTE: This product is sold by weight and package is full when packed, but due to the product’s nature, settling is likely to occur.

When an adjuvant is to be used with this product, ADAMA suggests the use of a Chemical Producers and Distributors Association certified adjuvant.


Acephate 97 WDG contains a Group 1B insecticide. Insect/mite biotypes with acquired resistance to Group (target site of action group number) may eventually dominate the insect/mite population if Group 1B insecticides/acaricides are used repeatedly in the same field or in successive years as the primary method of control for targeted species. This may result in partial or total loss of control of those species by Acephate 97 WDG or other Group 1B.

To delay insecticide resistance consider:
- Avoiding the consecutive use of Acephate 97 WDG or other group 1B insecticides/acaricides that have a similar target site of action, on the same insect/mite species.
- Using tank-mixtures or premixes with insecticides/acaricides from a different target site of action Group as long as the involved products are all registered for the same use and have different sites of action.
- Basing insecticide/acaricide use on a comprehensive IPM program.
- Monitoring treated insect/mite populations for loss of field efficacy.
- Contacting your local extension specialist, certified crop advisors, and/or manufacturer for insecticide/acaricide resistance management and/or IPM recommendations for the specific site and resistant pest problems.


Spray Volume: Acephate 97 WDG may be applied in a minimum of 10 gallons of spray solution per acre by ground sprayer or in a minimum of 5 gallons of spray solution per acre by aircraft spray equipment. Check equipment calibration frequently. Complete coverage and uniform application are essential for the most effective results, especially when lower spray volumes are applied. If necessary, increase the spray volume per acre for complete crop coverage.

Chemigation: Applications to cranberries may be made using sprinkler irrigation systems. Do not apply by chemigation to any other crop, or to cranberries using any other type of irrigation system. For overhead chemigation, apply only when wind speed is 10 mph or less.

Spray Drift Management
Avoiding spray drift at the application site is the responsibility of the applicator and the grower. The interaction of many equipment-and weather-related factors determine the potential for spray drift. The applicator and the grower are responsible for considering all these factors when making decisions regarding spraying.

Do not apply under conditions involving possible drift to food, forage, or other plantings that might be damaged or the crops thereof rendered unfit for sale, use, or consumption.

Do not allow spray to drift from the application site and contact people, structures people occupy at any time, and the associated property, parks and recreation areas, nontarget crops, aquatic and wetland areas, woodlands, pastures, rangelands, or animals.

Risk of exposure to sensitive aquatic areas can be reduced by avoiding applications when wind direction is toward the aquatic area.

Low humidity and high temperatures increase the evaporation rate of spray droplets and therefore the likelihood of spray drift to aquatic areas. Avoid spraying during conditions of low humidity and/or high temperature.

Apply only as a medium or coarser spray (ASABE standard 572.1) or a volume mean diameter of 300 microns or greater for spinning atomizer nozzles.

Apply only when the wind speed is 2 – 10 mph at the application site.

For ground applications:
- Do not apply with a nozzle height greater than 4 feet above the crop canopy.

For air blast applications:
- Direct spray above foliage and turn off outward pointing nozzles at row ends and outer rows.

For aerial applications:
- The distance of the outermost nozzles on the boom must not exceed 3/4 the length of the wingspan or 90% of the rotor blade diameter. Nozzles must always point backward parallel with the air stream and never be pointed downward more than 45°.
- If application includes a no-spray zone, do not release spray at a height greater than 10 feet above the ground or the crop canopy.

Where states have more stringent regulations, they should be observed.

The applicator should be familiar with and take into account the information covered in the Spray Drift Management section.

To avoid spray drift, do not apply under windy conditions. Avoid spray overlap as crop injury may result.

For aerial applications, the spray boom should be mounted on the aircraft so as to minimize drift caused by wing tip vortices. The minimum practical boom length should be used, and must not exceed 75% of the wing span or rotor diameter.

Information on Droplet Size
The most effective way to reduce drift potential is to apply large droplets. The best drift management strategy is to apply the largest droplets that provide sufficient coverage and control. Applying larger droplets reduces drift potential but will not prevent drift if applications are made improperly or under unfavorable environmental conditions (see

Wind, Temperature and Humidity and Temperature Inversions sections). Formation of very small droplets may be minimized by appropriate nozzle selection, by orienting nozzles away from the air stream as much as possible and by avoiding excessive spray boom pressure. Apply in a minimum of 5 gallons of spray solution per acre by aircraft spray equipment.

Compatibility: To determine the compatibility of Acephate 97 WDG with other products, the following procedure should be followed: Pour the recommended proportions of the products into a suitable container of water, mix thoroughly and allow to stand at least five (5) minutes. If the combination remains mixed or can be re-mixed readily, the mixture is considered physically compatible. For further information, contact your local ADAMA representative.

- For use on turf, use is limited to sod farms and golf courses, except when applying to mound or spot treatments for fire ant and harvester ant control.
- Not for indoor residential use.
- For greenhouse use, use is limited to commercial greenhouses for use on tobacco (floatbed)), ornamental, floral, and foliage plants. Do not use low pressure hand wand application equipment except when applying as a fire ant mound treatment or on ornamental trees, shrubs, and floral plants when grown for non-commercial use.
- Use on succulent green beans as a food crop is prohibited (includes string beans, snap beans, and wax beans). Succulent green bean use is permitted ONLY if grown for seed.

Limitations, Restrictions, and Exceptions


- Do not apply more than 4 1/8 lb. (4 lbs. ai) of ACEPHATE 97 WDG per acre per crop cycle. This limitation includes all methods of application; i.e. in-furrow, foliar, and seed treatment.
- For foliar treatment repeat applications, use a minimum spray interval of 7 days.
- For in-furrow treatments, make only one application per season.
- Do not feed treated forage or gin trash to livestock.
- Do not allow animals to graze on treated areas.
- For aerial application on cotton, do not apply more than 1.0 lb. ACEPHATE 97 WDG /acre in California and Arizona, and 0.75 lb. ACEPHATE 97 WDG/ acre for all other areas of the U.S. per treatment.


Cotton pest control programs, especially those for control of Sweetpotato/Silverleaf Whitefly populations, should employ a properly designed resistance-management strategy. Such resistance-management strategies include mixture or rotation of alternative classes of chemistry including organophosphates, carbamates, pyrethroids or insect growth regulators. Consult your state or area agricultural extension service for local resistance management strategies and advice on alternative insecticides.


- For the Blacklands of Texas use 1.0 lb. per acre ACEPHATE 97 WDG
- Aphid (Excluding Cotton Aphids in AZ & CA)


Apply ACEPHATE 97 WDG in 3 to 5 gals. of water per acre as an in- furrow spray.

ACEPHATE 97 WDG can be mixed with fungicides that are sprayed in-furrow for disease control.

Flat-fan nozzles used for in-furrow application should be set so that the fanned spray pattern is aligned with the row to insure good spray deposition in the seed furrow. Cone type nozzles may not provide a spray pattern that insures maximum spray deposition in the seed furrow, and should be avoided. Spray systems that employ metal or plastic tubing for delivery of spray solution into the seed furrow should have tubing securely fastened to the furrow opener and should be checked frequently to insure that the tubing is properly positioned to deposit spray solution into the seed furrow.

Use Restrictions
- Do not apply more than 4 1/8 lb. (4.0 lbs. ai) of ACEPHATE 97 WDG per acre per crop cycle. This limitation includes all methods of application; i.e. in-furrow, and foliar.
- For in-furrow treatments, make only one application per season.
- Preharvest interval is 21 days.
- Do not use treated seed for food/ feed purposes or processed for oil.

Pre-Harvest Interval

21 days

Restricted Entry Interval

24 hours