General Information

Product Information

Stinger herbicide is a selective, postemergence herbicide for control of broadleaf weeds in apple, barley, oats and wheat not underseeded with a legume, canola (rapeseed), Christmas tree plantations, Conservation Reserve Program (CRP) acres, cottonwood/poplar and eucalyptus tree plantations, crambe, fallow cropland, field corn, garden beet, grasses grown for seed, Brassica, peppermint, popcorn, rangeland and permanent grass pastures, southern pine seedbeds in forest nurseries, spearmint, spinach, stone fruits, sugar beet, sweet corn, turnip, and non-cropland areas including fence rows, around farm buildings, and equipment pathways.
Stinger may be applied by aircraft on the following crops: canola (Rapeseed), crambe, spinach, and sugar beet.
Do not apply Stinger by aircraft to other labeled crops unless otherwise permitted by Dow Agro Sciences supplemental labeling.
Re-treatment is allowed, but do not apply more than the maximum allowable rate per crop growing season. An application to fallow cropland preceding or following an application to dryland small grains (wheat, barley or oats) is allowed, but is not allowed preceding or following an application to irrigated small grains.
Use directions in Dow AgroSciences supplemental labeling may supersede directions or limitations in this labeling.
In California and New York, the maximum application rate for Stinger is 2/3 pint per acre per growing season. Do not exceed a cumulative amount of 2/3 pint of clopyralid [0.25 lb acid equivalent (a.e.)] per acre per crop year, unless specificallly allowed.
Not for sale, use or distribution in Nassau and Suffolk Counties in New York State.
Do not contaminate irrigation ditches or water used for irrigation or domestic purposes.
Do not use in greenhouses.
Chemigation: Do not apply this product through any type of irrigation system.
Do not spray pastures containing desirable forbs, especially legumes, unless injury can be tolerated.
Do not transfer livestock from treated grazing areas (or feeding of treated hay) to sensitive broadleaf crop areas without first allowing 7 days of grazing on an untreated pasture (or feeding of treated hay). If livestock are transferred within less than 7 days of grazing untreated pasture or eating untreated hay, urine and manure may contain enough clopyralid to cause injury to sensitive broadleaf plants.
Field Bioassay Instructions: In fields previously treated with this product, plant short test rows of the intended rotational crop across the original direction of application in a manner to sample field conditions, such as soil texture, soil pH, drainage, and any other variable that could affect the seed bed of the new crop. Field bioassay at any time prior to the planting of the intended rotational crop. Observe the test crop for herbicidal activity, such as poor stand (effect on seed germination) chlorosis (yellowing), necrosis (dead leaves or shoots), or stunting (reduced growth).
If herbicidal symptoms do not occur, the test crop can be grown. If there is apparent herbicidal activity, wait one year before repeating bioasay or plant only a labeled crop or crop listed in the table below for which the rotational interval has clearly been met.

Avoid Injury to Non-Target Plants
This product can affect susceptible broadleaf plants directly through foliage and indirectly by root uptake from treated soil. Therefore, do not apply Stinger directly to, or allow spray drift to come in contact with, vegetables, flowers, tomatoes, potatoes, beans, lentils, peas, alfalfa, sunflowers, soybeans, safflower, or other desirable broadleaf crops or ornamental plants or soil where sensitive crops will be planted the same season. (See Crop Rotation Intervals.)

Residues in Plants or Manure: Do not use plant residues, including hay or straw from treated areas, or manure or bedding straw from animals that have grazed or consumed forage from treated areas, for composting or mulching where susceptible plants may be grown the following season.
Do not spread manure from animals that have grazed or consumed forage or hay from treated areas on land used for growing susceptible broadleaf plants or apply such materials to land used for growing broadleaf crops, ornamentals, orchards, or other susceptible desirable plants. Plant materials or manure may contain enough clopyralid to cause injury to susceptible plant species. To promote herbicidal decomposition, plant residues should be evenly incorporated or burned. Breakdown of clopyralid in crop residues or manure is more rapid under warm, moist soil conditions and may be enhanced by supplemental irrigation.

Avoid Movement of Treated Soil
Avoid conditions under which soil from treated areas may be moved or blown to areas containing susceptible plants. Wind-blown dust containing clopyralid may produce visible symptoms, such as epinasty (downward curving or twisting of leaf petioles or stems), when deposited on susceptible plants; however, serious injury is unlikely. To minimize potential movement of clopyralid on wind-blown dust, avoid treatment of powdery dry or light sandy soils until soil is settled by rainfall or irrigation or irrigate the treated soil shortly after application.

Application Directions
Application Timing
Apply to actively growing weeds. Extreme growing conditions, such as drought or near freezing temperatures prior to, at, or following application, may reduce weed control and increase the risk of crop injury at all stages of growth. Only weeds that have emerged at the time of application will be affected. If foliage is wet at the time of application, control may be decreased. Applications of Stinger are rainfast within 6 hours after application.

Application Rates
Generally, application rates at the lower end of the rate range will be satisfactory for young, succulent growth of susceptible weed species.
For less sensitive species, perennials, and under conditions where control is more difficult (plant stress conditions, such as, drought or extreme temperatures, dense weed stands and/or larger weeds), use a higher rate within the rate range. Weeds in fallow land or other areas where competition from crops is not present will generally require higher rates for control or suppression.

Spot Treatments
To prevent misapplication, apply spot treatments only with a calibrated boom or with hand sprayers according to directions provided below.
Hand Held Sprayers: Hand held sprayers may be used for spot applications. Care should be taken to apply the spray uniformly and at a rate equivalent to a broadcast application. Application rates in the table are based upon an area of 1000 sq ft. Mix the amount of Stinger (fl oz or mL) corresponding to the desired broadcast rate in 1 gallon or more of spray. To calculate the amount of Stinger required for larger areas, multiply the table value (fl oz or mL) by the area to be treated in "thousands" of square feet, e.g., if the area to be treated is 3500 sq ft, multiply the table value by 3.5 (calc. 3500 ÷ 1000 = 3.5). An area of 1000 sq ft is approximately 10.5 x 10.5 yards (strides) in size.

Use of Adjuvants
Addition of surfactants, crop oils, or other adjuvants is not usually necessary when using Stinger. Adding a surfactant to the spray mixture may increase effectiveness on weeds but may reduce selectivity to the crop, particularly under conditions of plant stress. When an adjuvant is to be used with this product, Dow AgroSciences recommends the use of a Chemical Producers and Distributors Association certified adjuvant.
If an adjuvant is added to the spray solution, follow all manufacturer use guidelines.

Spray Coverage
Use sufficient spray volume to provide thorough coverage and a uniform spray pattern. Do not broadcast apply in less than 2 gallons total spray volume per acre. For best results, and to minimize spray drift, apply in a spray volume of 10 gallons or more per acre. As vegetative canopy and weed density increase, increase spray volume to obtain equivalent weed control. Use only nozzle types and spray equipment designed for herbicide application. To reduce spray drift, follow precautions under Avoid Injury to Non-Target Plants.

Limitations, Restrictions, and Exceptions

Postemergence Broadleaf Weed Control in Cranberry

Use Restrictions

- Make 1-2 broadcast application per crop per year, not to exceed a total of 1 pint per acre (0.375 lb a.e./acre)
- Do not apply within 5 hours of expected rainfall or irrigation.
- Preharvest interval: Do not apply within 50 days of harvest.
- Do not apply by aircraft.
- Do not apply through any type of irrigation system.

Application Timing:
Cranberry plants are more sensitive to Stinger applied in the spring prior to bloom, before and/or during the crop's annual flush of growth, than after bloom. In the spring, from winter flood removal to 1 week prior to bloom, apply Stinger to cranberry fields at the lowest labeled rate per acre. Do not apply Stinger from 1 week prior to bloom until 1 week after bloom. After bloom, apply Stinger up until 50 days prior to harvest. Higher rates of Stinger can be applied to cranberry plants post-bloom because the plants are less sensitive to Stinger than during the spring flush. Stinger can also be applied in autumn after harvest. Determine the rate of Stinger based on time of year (cranberry plant sensitivity), targeted weed species, and whether 1 or 2 sprays will be applied during the growing season. Note: Stinger is a residual herbicide and applications must be made based on accurate rate per acre calibrations. Applications of Stinger can injure the cranberry plant and significantly reduce yields depending on rates used, timing of application, and environmental conditions.

Wipe Treatments: For wipe treatments, apply a 2% solution of Stinger in water (2.5 fl oz or 75 ml per gallon). Make a maximum of 2 applications with the total usage of Stinger from all types of applications not to exceed 16 fl oz per acre or 1 pint per acre (0.375 lb a.e. per acre) per annual growing season.

Other Use Restrictions:
- Application may be made only by certified applicators or persons directly under their supervision.
- Do not apply to weeds tolerant to Stinger such as yellow loosestrife, sedges, rushes, grasses, and violets.
- Avoid spray drift by using coarse sprays with large droplets and low pressure and by applying when wind speed is less than 5 mph.
- Do not apply directly to water, to areas where surface water is present, or within 5 feet of any water moving off or through the cranberry field.
- Do not apply where surface soils have rapid permeability (sand) and no subsurface impermeability (clay or peat), and where the water table of the underlying aquifer is shallow.
- Application must avoid any adjacent wetland plant species.
- Follow all Worker Protection Standard requirements on the label for Stinger.
- Carefully follow restrictions and other use precautions and limitations on the product label for Stinger.

Pre-Harvest Interval

50 days

Restricted Entry Interval

12 hours