WHEAT (INCLUDING DURUM), BARLEY AND TRITICALE

General Information

PRODUCT INFORMATION

AFFINITY BroadSpec herbicide is a soluble granule that is used for selective postemergence weed control in wheat (including durum), barley, oats, triticale and fallow. The best control is obtained when AFFINITY BroadSpec is applied to young, actively growing weeds. The use rate will depend on weed spectrum and size of weed at time of application. The degree and duration of control may depend on the following:

- weed spectrum and infestation intensity

- weed size at application

- environmental conditions at and following treatment

AFFINITY BroadSpec is noncorrosive, nonflammable, nonvolatile, and does not freeze. AFFINITY BroadSpec should be mixed, and completely dissolved in water and applied as a uniform broadcast spray.

RESTRICTIONS

Injury to or loss of adjacent sensitive crops, desirable trees or vegetation may result from failure to observe the following:

- Do not apply, drain or flush equipment on or near desirable trees or other plants or on areas where their roots may extend, or in locations where the chemical may be washed or moved into contact with their roots.

- Do not use on lawns, walks, driveways, tennis courts, or similar areas. Prevent drift of spray to desirable plants.

AFFINITY BroadSpec should not be applied to wheat , barley, oats, and triticale that is stressed by severe weather conditions, drought (including low levels of subsoil moisture), low fertility, water-saturated soil, disease, or insect damage, as crop injury may result. Risk of injury is greatest when crop is in the 2 to 5- leaf stage. Severe winter stress, drought, disease, or insect damage following application also may result in crop injury.

Do not apply to wheat, barley, oats, and triticale underseeded with another crop.

Dry, dusty field conditions may result in reduced control in wheel track areas.

Also observe the following:

Do not harvest wheat or barley sooner than 45 days after the last application of AFFINITY BroadSpec.

When using AFFINITY BroadSpec in tank mixes or sequential applications with other products containing thifensulfuron-methyl and/or tribenuron-methyl, do not exceed the following limits.

PRECAUTIONS

Injury to or loss of adjacent sensitive crops, desirable trees or vegetation may result from failure to observe the following:

- Take all necessary precautions to avoid all direct or indirect contact (such as spray drift) with non-target plants or areas.

- Carefully observe all sprayer cleanup instructions both prior to and after using this product, as spray tank residue may damage crops other than wheat, barley, oats, and triticale.

Wheat, barley, oats, and triticale may differ in their response to various herbicides. DuPont recommends that you first consult your state experiment station, university, or extension agent as to sensitivity to any herbicide. If no information is available, limit the initial use of DuPont AFFINITY BroadSpec to a small area.

Under certain conditions, such as heavy rainfall, prolonged cold weather (daily high temperature less than 50°F), or wide fluctuations in day/night temperatures prior to or soon after AFFINITY BroadSpec application, temporary discoloration and/or crop injury may occur. To reduce the potential of crop injury, tank mix AFFINITY BroadSpec with 2,4-D (ester formulations perform best–see “Tank Mixtures” section of thE label) and apply after the crop is in the tillering stage of growth.

ENVIRONMENTAL CONDITIONS AND BIOLOGICAL ACTIVITY

AFFINITY BroadSpec is absorbed primarily through the foliage of plants, rapidly inhibiting the growth of susceptible weeds. One to 3 weeks after application to weeds, leaves of susceptible plants appear chlorotic, and the growing point subsequently dies.

AFFINITY BroadSpec provides the best control in vigorously growing crops that shade competitive weeds. Weed control in areas of thin crop stand or seeding skips may not be as satisfactory. However, a crop canopy that is too dense at application can intercept spray and reduce weed control.

The herbicidal action of AFFINITY BroadSpec may be affected in crops stressed from adverse environmental conditions (such as extreme temperatures or moisture), abnormal soil conditions, cultural practices, or variations in crop variety. In warm, moist conditions, the expression of herbicide symptoms is accelerated; in cold, dry conditions, expression of herbicide symptoms is delayed. In addition, weeds hardened-off by drought stress are less susceptible to AFFINITY BroadSpec.

APPLICATION TIMING

Since AFFINITY BroadSpec has very little or no soil activity, it controls only those weeds that have germinated; therefore, apply AFFINITY BroadSpec when all or most of the weeds have germinated. Annual broadleaf weeds should be past the cotyledon stage, actively growing, and less than 4\" tall or wide. Rainfall immediately after treatment can wash DuPont AFFINITY BroadSpec off of weed foliage, resulting in reduced weed control. Several hours of dry weather are needed to allow AFFINITY BroadSpec to be sufficiently absorbed by weed foliage.

GROUND APPLICATION

For optimum spray distribution and thorough coverage, use flat-fan or low-volume flood nozzles.

For flat-fan nozzles, use a spray volume of at least 5 gal per acre (GPA).

For flood nozzles on 30” spacings, use at least 10 GPA, flood nozzles no larger than TK10 (or the equivalent), and a pressure of at least 30 psi. For 40” nozzle spacings, use at least 13 GPA; for 60” spacings use at least 20 GPA. It is essential to overlap the nozzles 100% for all spacings.

Raindrop “RA” nozzles are not recommended for AFFINITY BroadSpec applications, as weed control performance may be reduced.

Use screens that are 50-mesh or larger.

AERIAL APPLICATION

Use nozzle types and arrangements that provide optimum spray distribution and maximum coverage at 2 to 5 GPA.

Use at least 3 GPA in Idaho, Oregon, or Utah. The product is limited to ground application only in the State of New York.

RESISTANCE

DuPont AFFINITY BroadSpec, which contains the active ingredients thifensulfuron and tribenuron is a Group 2 herbicide based on the mode of action classification system of the Weed Science Society of America. When herbicides with mode of action classifications that affect the same biological sites of action are used repeatedly over several years to control the same weed species in the same treatment area, naturally-occurring resistant biotypes may survive a correctly applied herbicide treatment, propagate, and become dominant in that area. Adequate control of these resistant weed biotypes cannot be expected. If weed control is unsatisfactory, it may be necessary to retreat the problem area using a product affecting a different biological site of action.

To better manage herbicide resistance through delaying the proliferation and possible dominance of herbicide resistant weed biotypes, it may be necessary to change cultural practices within and between crop seasons such as using a combination of tillage, retreatment, tank-mix partners and/or sequential herbicide applications that affect a different site of action. Weed escapes that are allowed to go to seed, and movement of plant material between treatment areas on equipment will promote the spread of resistant biotypes.

It is advisable to keep accurate records of pesticides applied to individual fields to help obtain information on the spread and dispersal of resistant biotypes. Consult your agricultural dealer, consultant, applicator, and/or appropriate state agricultural extension service representative to determine appropriate actions for treating specific resistant weed biotypes in your area.

When herbicides that affect the same biological site of action are used repeatedly over several years to control the same weed species in the same field, naturally-occurring resistant biotypes may survive a correctly applied herbicide treatment, propagate, and become dominant in that field. Adequate control of these resistant weed biotypes cannot be expected.

If weed control is unsatisfactory, it may be necessary to retreat the problem area using a product affecting a different site of action.

INTEGRATED PEST MANAGEMENT

DuPont recommends the use of Integrated Pest Management (IPM) programs to control pests. The product may be used as part of an Integrated Pest Management (IPM) program that can include biological, cultural, and genetic practices aimed at preventing economic pest damage. Application of the product should be based on IPM principles and practices including field scouting or other detection methods, correct target pest identification, population monitoring, and treating when target pest populations reach locally determined action thresholds. Consult your state cooperative extension service, professional consultants or other qualified authorities to determine appropriate action treatment threshold levels for treating specific pest/crop systems in your area.

For tank mix application with cleanwave herbicide for improved kochia and broadleaf weed control in wheat in Colorado, Kansas, Montana, Minnesota, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas And Wyoming refer to Supplemental Label.

Refer to Supplemental Label for the Suppression of Yellow and Green Foxtail in Wheat for use in the State of North Dakota, South Dakota, Minnesota, and Montana.

For Tank Mix information with Axial Star Herbicide For Broadleaf And Grass Weed Control In Idaho, Oregon, Utah And Washington, refer to its supplemental label.

Limitations, Restrictions, and Exceptions

WHEAT (INCLUDING DURUM), BARLEY AND TRITICALE

Maximum oz a.i. per Single Application (thifensulfuron-methyl): 0.45

Maximum oz a.i. per Single Application (tribenuron-methyl): 0.45

Maximum oz a.i. per Use Period (thifensulfuron-methyl): 0.75

Maximum oz a.i. per Use Period (tribenuron-methyl): 0.25

For Catchweed bedstraw, Mallow (common, little), Marestail, Nightshade (cutleaf, hairy) - Partial control: A visual reduction of weed population as well as a significant loss of vigor. For better results, use the highest recommended rate of AFFINITY BroadSpec per acre and include a tank mix partner such as 2,4-D, MCPA, “Buctril” or “Banvel”/“Clarity” (refer to TANK MIXTURES).

Restricted Entry Interval

12 hours