General Information


- For selective postemergence broadleaf weed control in wheat, barley, triticale, oats, burndown, DuPont ExpressSun sunflowers, and grass grown for seed.

- In wheat, barley and triticale apply after the crop is in the 2-leaf stage, but before the flag leaf is visible. In spring oats, apply after the crop is in the 3-leaf stage, but before jointing. In ExpressSun sunflowers, apply any time from the 2-leaf stage, but before bud formation.

- In burndown uses apply when the majority of weeds have emerged and are actively growing.

- Apply at the rate of 0.25 to 0.5 ounce per acre (see USE RATE).

- Unless otherwise specified, always add a surfactant (see SPRAY ADJUVANTS).

- May be applied by ground or by air.

- Use in tank mixtures with other registered herbicides for broader spectrum weed control (see Tank Mixtures).

- Consult label text for complete instructions. Always read and follow label \"Directions For Use\".


EXPRESS is a water soluble granule that is used for selective postemergence weed control in wheat (including durum), barley, triticale, oats and ExpressSun sunflowers; and for post-harvest burndown, fallow, and pre-plant burndown weed control. The best control is obtained when EXPRESS 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

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


EXPRESS is absorbed through the foliage of broadleaf weeds, rapidly inhibiting their growth. Leaves of susceptible plants appear chlorotic from 1 to 3 weeks after application and the growing point subsequently dies.

EXPRESS 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.

EXPRESS may injure crops that are stressed from adverse environmental conditions (such as extreme temperatures or moisture), abnormal soil conditions, or cultural practices. In addition, different varieties of the crop may have differing levels of sensitivity to treatment with EXPRESS under otherwise normal conditions.

Treatment of sensitive crop varieties may injure crops. To reduce the potential of crop injury to cereals, tank mix DuPont EXPRESS with 2,4-D (ester formulations perform best–see the Tank Mixtures section of the label) and apply after the crop is in the tillering stage of growth.

In warm, moist conditions, the expression of herbicide symptoms is accelerated in weeds; in cold, dry conditions, expression of herbicide symptoms is delayed. In addition, weeds hardened-off by drought stress are less susceptible to EXPRESS.

Weed control may be reduced if rainfall or snowfall occurs soon after application. Several hours of dry weather are needed to allow EXPRESS to be sufficiently absorbed by weed foliage.


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

- Injury to or loss of desirable trees or vegetation may result from failure to observe the following:

a) 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.

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

- When using EXPRESS in tank mixes or sequential applications with other products containing tribenuron-methyl, do not exceed the following limits.


- Injury to or loss of adjacent sensitive crops and vegetation may result from failure to observe the following:

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

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

- Varieties of wheat (including durum), 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 crop sensitivity to any herbicide. If no information is available, limit the initial use to a small area.

- Under certain conditions such as heavy rainfall, prolonged cold weather, or wide fluctuations in day/night temperatures prior to or soon after EXPRESS application, temporary discoloration and/or crop injury may occur. To reduce the potential of crop injury, tank mix EXPRESS with 2,4-D (ester formulations perform best - see the \"TANK MIXTURES\" section of the label) and apply after the crop is in the tillering stage of growth.

- EXPRESS should not be applied to wheat, barley, oats or triticale that is stressed by severe weather conditions, drought, 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.

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


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.

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 have a different site of action. Weed escapes that are allowed to go to seed will promote the spread of resistant biotypes. If applicable, see the Weeds Controlled section of the label for additional information on managing herbicide resistant weed 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 for specific alternative cultural practices or herbicide recommendations available in your area.


This 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. IPM principles and practices include 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.


Allow at least 7 days between application and grazing of treated forage. In addition, allow at least 7 days between application and feeding of forage (green chop) from treated areas to livestock. Allow at least 30 days between application and feeding of hay from treated areas to livestock. Allow at least 45 days between application and harvesting of grain. Harvested straw may be used for bedding and/or feed.




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

- Select nozzles and pressure that deliver medium spray droplets.

- Nozzles that deliver coarse spray droplets may be used to reduce drift, provided spray volume is increased to maintain coverage on small weeds. For optimal product performance and minimal spray drift, adjust the spray boom to the lowest possible spray height listed in manufacturers’ specifications.

- Overlaps or starting, stopping, slowing, and turning while spraying may result in crop injury.

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

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

- \"Raindrop RA\" nozzles are not recommended for DuPont EXPRESS applications, as weed control performance may be reduced.

- Use screens that are 50-mesh or larger.

For application in California refer to the \"CALIFORNIA APPLICATION REQUIREMENTS FOR PROTECTION OF SENSITIVE CROPS\" section of the label for specific ground application requirements.


For aerial application, select nozzles and pressure that deliver medium or coarse spray and that provide optimum spray distribution and maximum coverage at 2 to 5 GPA.

Use at least 2 GPA. In Idaho, Oregon and Utah use at least 3 GPA.

Do not apply EXPRESS by air in the state of New York.

For aerial applications, do not apply during a temperature inversion, when wind speed is less than 3 mph or above 10 mph, or when conditions favor poor coverage and/or off-target spray drift.

See the Spray Drift Management section of the label.

For application in California refer to the \"CALIFORNIA APPLICATION REQUIREMENTS FOR PROTECTION OF SENSITIVE CROPS\" section of the label for specific aerial application requirements.


EXPRESS may be tank mixed with other suitable registered herbicides to control weeds listed as partially controlled, weeds resistant to EXPRESS or weeds not listed under the \"WEEDS CONTROLLED\" sections of the label. Refer to the label for tank mix information.

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

Limitations, Restrictions, and Exceptions


Seedling Stands: For best results apply EXPRESS in a tank mix with another suitable broadleaf herbicide.

For use on bentgrass, apply after stolens are 3 to 5 inches across.

Restricted Entry Interval

12 hours