General Information


- For selective postemergence broadleaf weed control in Wheat (including durum), Barley, Oat, Triticale and Fallow

- Apply at the rate of 0.45 to 0.9 ounce per acre on Wheat, Barley, Triticale and Fallow, 0.45 to 0.6 ounce per acre on Oat (see Application Information).

- Apply after the crop is in the 2-leaf stage, but before the flag leaf is visible on Wheat, Barley, Triticale and Winter Oat. On Spring Oat, apply after the crop is in the 3 leaf stage, but before jointing.

- 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”.


HARMONY EXTRA SG herbicide is a water soluble granule that is used for selective postemergence weed control in wheat (including durum), barley, oat, triticale and fallow. Since HARMONY EXTRA SG has very little soil activity, it controls only those weeds that have germinated. The best control is obtained when HARMONY EXTRA SG is applied to young, actively growing weeds. The specified 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

HARMONY EXTRA SG is noncorrosive, nonflammable, nonvolatile, and does not freeze. HARMONY EXTRA SG is to be mixed, and completely dissolved in water and applied as a uniform broadcast spray.

Environmental Conditions and Biological Activity

HARMONY EXTRA SG is absorbed primarily through the foliage of plants, rapidly inhibiting the growth of susceptible weeds. One to 3 weeks after application to weeds (2 to 5 weeks for wild garlic), leaves of susceptible plants appear chlorotic, and the growing point subsequently dies.

HARMONY EXTRA SG 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 HARMONY EXTRA SG 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 HARMONY EXTRA SG.


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. 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.

Integrated Pest Management

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 from treated areas to livestock. Allow at least 30 days between application and feeding of hay from treated areas to livestock. Harvested straw may be used for bedding and/or feed. Allow at least 45 days between application and harvesting of grain.


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 HARMONY EXTRA SG 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.

Do not apply HARMONY EXTRA SG by air in the state of New York.

See the Spray Drift Management section of the label.


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.

- 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, triticale or oat.

DuPont HARMONY EXTRA SG is only registered on wheat, barley, oat, triticale and fallow. Do not use on any other crop.

The total rate of HARMONY EXTRA SG for wheat (including durum), barley and triticale cannot exceed 1.5 ounce product per acre applied to any one crop during one growing season.

The total rate of HARMONY EXTRA SG for oat (spring and winter) cannot exceed 0.6 ounces product per acre applied to any one crop during one growing season.

Varieties of wheat (including durum), barley 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 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 DuPont HARMONY EXTRA SG application, temporary discoloration and/or crop injury may occur. To reduce the potential of crop injury, tank mix HARMONY EXTRA SG with 2,4-D (ester formulations perform best–see Tank Mixtures) and apply after the crop is in the tillering stage of growth.

HARMONY EXTRA SG should not be applied to wheat, barley. triticale or oat 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.

Do not apply to wheat, barley, triticale or oat crops underseeded with another crop.

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

Do not harvest sooner than 45 days after the last application of HARMONY EXTRA SG.

When using HARMONY EXTRA SG in tank mixes or sequential applications with other products containing thifensulfuron-methyl and/or tribenuron-methyl, do not exceed the limits shown in the label.

Refer in the label regarding tank mix information.

Limitations, Restrictions, and Exceptions


HARMONY EXTRA SG effectively controls the listed weeds when used according to label directions.

Common cocklebur; Common ragweed; Corn gromwell; Lanceleaf sage; Wild buckwheat; Wild garlic; Wild radish: See SPECIFIC WEED PROBLEMS for more information.

Kochia; Prickly lettuce; Russian thistle: Naturally occurring resistant biotypes of kochia, prickly lettuce and Russian thistle are known to occur. See the Tank Mixtures and Specific Weed Problems sections of the label for additional details.


Application Timing

HARMONY EXTRA SG can also be used as a burndown treatment prior to planting other crops such as soybeans, corn, and cotton. See \"CROP ROTATION\" for the minimum time interval required before planting other crops.

Cotton Precaution: Seedling disease, nematodes, cold weather, deep planting (more than 2\"), excessive moisture, high salt concentration, and/or drought may weaken cotton seedlings and increase the possibility of crop injury. Cotton resumes normal growth once favorable growing conditions return.

Apply 0.45 to 0.75 oz HARMONY EXTRA SG per acre as a burndown treatment before planting cotton. HARMONY EXTRA SG may be applied in combination with other suitable registered burndown herbicides (see TANK MIXTURES - PRE-PLANT BURNDOWN).

Sequential treatments of HARMONY EXTRA SG may be made provided the total amount of HARMONY EXTRA SG applied during one fallow/pre-plant cropland season does not exceed 1.5 ounce per acre; for example, 0.75 ounce in the fall followed by 0.75 ounce in the spring.

Use the higher end of the rate range when weed infestation is heavy or predominantly consists of those weeds listed under PARTIAL CONTROL or when application timing and environmental conditions are marginal.

Refer in the label for the information with regards to Tank Mixtures in Preplant burndown.

Restricted Entry Interval

12 hours