COTTON - ARMYWORM, BOLLWORM, LEAFMINER, LOOPER, CATERPILLAR AND THRIPS
Entrust is a Naturalyte insect control product for control of many foliage feeding pests including lepidopterous larvae (worms or caterpillars), Colorado potato beetles, leafminers and thrips infesting labeled crops. This product’s active ingredient, spinosad, is biologically derived from the fermentation of Saccharopolyspora spinosa, a naturally occurring soil organism. Spinosad is classified as an organic substance by the USDA National Organic Standards Board. Entrust (wettable powder) should be mixed with water and applied as a foliar spray with aerial or ground equipment equipped for conventional insecticide spraying.
Proper application techniques help ensure thorough spray coverage and correct dosage for optimum insect control. The following recommendations are provided for ground and aerial application of Entrust Naturalyte insect control. Attention should be given to sprayer speed and calibration, wind speed, and foliar canopy to ensure adequate spray coverage.
Row Crop Application
Use calibrated power-operated ground spray equipment capable of providing uniform coverage of the target crop. Orient the boom and nozzles to obtain uniform crop coverage. A minimum of 10 gallons per acre should be utilized, increasing volume with crop size and/or pest pressure. Use hollow cone, disc-core hollow cone or twin jet flat fan nozzles suitable for insecticide spraying. Under certain conditions, drop nozzles may be required to obtain complete coverage of plant surfaces. Follow manufacturer’s recommendations for ideal nozzle spacing and spray pressure and minimize boom height to optimize uniformity of coverage and maximize deposition (optimize on-target deposition) to reduce drift.
- Dilute Spray Application: This application method is based on the premise that all plant parts are thoroughly wetted, to the point of runoff, with spray solution. To determine the number of gallons of dilute spray per acre, contact your state agricultural experiment station, certified pest control advisor, or extension specialist for assistance.
- Concentrate Spray Application: This application method is based on the premise that all the plant parts are uniformly covered with spray solution but not to the point of runoff as with a dilute spray. Instead, a lower spray volume is used to deliver the same application rate per acre as used for the dilute spray.
Apply in a spray volume of 5 or more gallons per acre (10 or more gallons per acre for tree or orchard crops). Nozzle configuration should provide a medium to fine dropsize per ASAE S-572 standard (see USDA-ARS or NAAA handbook). Guidance for ASAE S-572 nozzle configuration can be found at the following web site: www.cpproductsinc.com. Boom length must be less than 75% of wing or 90% of rotor span and swatch adjustment (offset) to compensate for crosswinds. Observe minimum safe application height (under 12 feet for ag canopies). Use GPS equipment, swath markers or flagging to ensure proper application to the target area. The boom nozzle configurations used should be patterned (e.g., at NAAA Fly-In) for both crosswind and near parallel winds. If application is made parallel to the wind direction, swath width should be adjusted downward. Use swath adjustment (offset) to compensate for crosswinds. Do not apply under completely calm wind conditions. It is best to apply when wind speed is between 2-10 mph. Under conditions of low humidity and high temperatures, adjust spray volume and droplet size upward to compensate for evaporation of spray droplets. Insect control by aerial application may be less than control by ground application because of reduced coverage.
Additional Use Restrictions for Certain Florida Counties to Manage Resistance Development in Western Flower Thrips (For Distribution and Use Only Within the State of Florida)
Directions for Use
Entrust is only to be applied in certain geographical areas of the state. This product is not to be used in Broward County. This product is also prohibited from use in Palm Beach County east of the Arthur R. Marshall Loxahatchee Wildlife Refuge areas 1 and 2 or east, northeast, or north of the L-8 Canal north of the Arthur R. Marshall Loxahatchee Wildlife Refuge.
Tobacco Budworm and/or Cotton Bollworm: For the most effective control, fields should be scouted twice per week and Entrust applied when the majority of the population is within the time of blackhead egg stage to 1/8-inch larval length.
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Beet Armyworm: Economic thresholds vary with local conditions and sampling methods. The following is an example of one such method: apply Entrust when field scouting reveals three or more occurrences of egg hatch or larval feeding per 100 feet of row.
Loopers: Economic thresholds vary with local conditions and sampling methods. The following is an example of one such method: apply Entrust when field scouting reveals four larvae per 1 foot of row or 25% d efoliation.
Application Rate: Use a higher rate in the rate range and higher spray volume when one or more of the following is true: tobacco budworms or bollworms are more than 1/4 inch in length; target pest population is 2X above state threshold level; or foliage canopy is tall/dense and worms are present in the lower part of the canopy. Heavy infestations may require repeat applications, but follow resistance management guidelines.
Resistance Management: Do not make more than two consecutive applications of Group 5 insecticides (spinetoram and spinosad). If additional treatments are required after two consecutive applications of Group 5 insecticides, rotate to another class of effective insecticides for at least one application. Consult your local Dow AgroSciences representative, extension specialist, certified crop advisor, or state agricultural experiment station for information on alternative effective products to use in your area. For tobacco budworm and/or cotton bollworm where early season conservation of beneficial insects is practical, use Entrust to control the 1st and 3rd generation of tobacco budworm and/or cotton bollworm. Where conservation of beneficial insects is not as critical (for example, fields have received non-selective early season treatments for boll weevil or lygus bugs), use Entrust to control either the 2nd or 3rd generation of tobacco budworm and/or cotton bollworm.
- Minimum Treatment Interval: Do not make applications less than 5 days apart for high rates of application.