TOBACCO - BUDWORM AND HORNWORM - FLORIDA
Tracer is a Naturalyte insect control product for control of many foliage feeding pests infesting labeled crops. This product’s active ingredient, spinosad, is biologically derived from the fermentation of Saccharopolyspora spinosa, a naturally occurring soil organism. Tracer should be mixed with water and applied as a foliar spray with aerial or ground equipment equipped for conventional insecticide spraying.
General Use Precautions
Integrated Pest Management (IPM) Programs
Tracer is recommended for IPM programs in labeled crops. Tracer should be applied when field scouting indicates target pest densities have reached the economic threshold, i.e., the point at which the insect population must be reduced to avoid economic losses beyond the cost of control. Other than reducing the target pest species as a food source, Tracer does not have a significant impact on certain parasitic insects or the natural predaceous arthropod complex in treated crops, including bigeyed bugs, ladybird beetles, flower bugs, lacewings, minute pirate bugs, damsel bugs, assassin bugs, predatory mites or spiders. The feeding activities of these beneficials will aid in natural control of other insects and reduce the likelihood of secondary pest outbreaks. If Tracer is tank mixed with any insecticide that reduces its selectivity in preserving beneficial predatory insects, the full benefit of Tracer in an IPM program may not be reduced.
Insecticide Resistance Management (IRM)
Tracer contains spinosad, a Group 5 insecticide. Insect/mite biotypes with acquired resistance to Group 5 insecticides may eventually dominate the insect/mist population if Group 5 insecticides are used repeatedly in the same field or area, 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 Tracer and other Group 5 insecticides. Currently, only spinetoram and spinosad active ingredients are classified as Group 5 insecticides. These two insecticide active ingredients share a common mode of action and must not be rotated with each other for control of pests listed on the label. Spinetoram and spinosad may be rotated with all other labeled insecticide active ingredients.
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 Tracer. 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 5 to 10 gallons per acre should be utilized, increasing volume with crop size and/or pest pressure. Use hollow cone, twin jet flat fan nozzles or other insecticide atomizer suitable for insecticide spraying to provide a fine to coarse spray quality (per ASABE S-572, see nozzle catalogs). 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. Minimize boom height to optimize uniformity of coverage and maximize deposition (optimize on-target deposition) to reduce drift.
Band Application: Band application may be appropriate when the crop is small. Nozzle selection, placement, or shielding to compensate for windy conditions is critical to ensure adequate coverage.
Apply in a spray volume of 5 gallons or more per acre (10 gallons or ore per acre for trees, vines or orchard crops). Nozzle configuration should provide a medium to fine dropsize per ASABE S-572 standard (see USDA-ARS or NAAA handbook). Guidance for ASABE 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 85% of rotor span and swath adjustment (offset) to compensate for crosswinds. Observe minimum safe application height (maximum 12 feet for ag canopies). Use GPS equipment, swath markers or flagging to ensure proper application to 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 to 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.
Specific Use Directions for insect control of Tobacco:
For distribution and use only in the state of Florida.
Application Timing: For tracking lepidopterous larvae, scout with enough regularity to monitor the population size of each of the labeled pests. Heavy infestations may require repeat applications but make no more than 3 applications per 30 days or 6 applications per crop. The minimal time period between applications must be 7 days. To delay resistance selection, do not treat sequential generations with the same class of insect control products. Treat when pests appear, targeting eggs at hatch or small larvae. Consult your Dow AgroSciences representative, extension service specialist, certified crop advisor or your state agricultural experiment station for any additional area use recommendations for your area.
Spray Delivery: Use a minimum of 20 gallons of water per acre to obtain full coverage of foliage, increasing volume and nozzles per row as necessary with crop maturity.
Note: Use the higher end of the rate range for larger larvae or high infestations.
Do not apply more than the total of 0.45 lb of spinosad active ingredient per acre per season or make the last spray application closer than 3 days before harvest.
- Do not apply Tracer within 3 days of harvest.
- Chemigation: Do not apply through any type of irrigation equipment.