General Information


Triclopyr 3SL herbicide is used to control unwanted woody plants, aquatic plants and annual and perennial broadleaf weeds:

- in forests

- in non-crop areas including industrial manufacturing and storage sites

- in rights-of-way such as electrical power lines, communication lines, pipelines, roadsides, and railroads

- in fence rows

- in non-irrigation ditch banks

- around farm buildings

- on Christmas tree plantations

- on wetland sites in production forests and industrial non-crop areas in aquatic sites such as ponds, lakes, reservoirs, non-irrigation canals, and ditches which have little or no continuous outflow

- on rice Triclopyr 3SL use on these sites may include application to grazed areas as well as for the establishment and maintenance of wildlife openings.


- Obtain required permits: Consult with appropriate state or local water authorities before applying this product to public waters. State or local public agencies may require permits.

- Do not apply this product through any type of irrigation system.

- Do not apply to ditches or canals used to transport irrigation water. It is permissible to treat non-irrigation ditch banks.

- Do not apply where runoff or irrigation water may flow onto agricultural land other than rice fields as injury to crops may result.

- It is permissible to treat non-irrigation ditch banks, seasonally dry wetlands (such as flood plains, deltas, marshes, swamps, or bogs), and transitional areas between upland and lowland sites.

- Do not apply directly to unimpounded rivers or streams.

- Do not apply to salt water bays or estuaries.

- When making application to banks or shorelines of moving water sites, minimize overspray to open water.

- Application through a mist blower is not recommended.

- Do not make direct applications or allow spray mists to drift onto cotton; grapes; soybeans; tobacco; vegetable crops; flowers; ornamental shrubs or trees; or other desirable broadleaf plants.

- For range and pasture sites including rights-of-ways, fence rows, or any area where grazing and harvesting is allowed, do not apply more than 2 lb a.i. of triclopyr (2/3 gallon of Triclopyr 3SL) per acre per year.

- For forestry uses, do not apply more than 6 lb a.i. of triclopyr (2 gallons of Triclopyr 3SL) per acre per year.

- For all terrestrial uses other than rangeland, pasture, forestry sites, and grazed areas, a maximum of 9 lb a.i. of triclopyr (3 gallons of Triclopyr 3SL) per acre per year may be applied.

- All livestock, except lactating dairy animals, can graze at any time.

- Lactating dairy animals cannot graze forage until the next growing season after application.

- For all livestock, wait 14 days after application before harvesting hay.

- Grazed areas of non-cropland and forestry sites may be spot treated if they comprise no more than 10% of the total grazable area.

- Withdraw livestock from grazing treated grass or consumption of treated hay at least 3 days before slaughter.

- Arizona: Triclopyr 3SL has not been approved for use on plants grown for commercial production, specifically forests grown for commercial timber production or on designated grazing areas.



Aerial Application: When making aerial applications on rights-of-way or other areas near susceptible crops, apply through a Microfoil or Thru-Valve boom or use an agriculturally approved drift control agent. Other drift reducing systems or thickened sprays prepared by using high viscosity inverting systems may be used if they are made as drift-free as are mixtures containing agriculturally approved thickening agents or applications made with the Microfoil or Thru-Valve boom. Keep spray pressures low enough to provide coarse spray droplets. Spray boom should be no longer than 3/4 of the rotor length. Spray only when the wind velocity is low (follow state regulations). Avoid application during air inversions. If a spray thickening agent is used, follow all use recommendations and precautions on the product label.

Ground Application: To aid in reducing spray drift, Triclopyr 3SL should be applied in thickened (high viscosity) spray mixtures using an agriculturally approved drift control additive, high viscosity invert system, or equivalent, as directed by the manufacturer. Use of low pressure nozzles and operating nozzles in the lower end of the manufacturer’s recommendations is advised. To minimize drift, keep the spray boom as low as possible, apply in > 20 gallons of spray volume per acre, spray when wind velocities are low; or use an approved drift control agent.

In Hand Gun Applications: Select the minimum spray pressure that will provide adequate plant coverage (without forming a mist). Do not apply with nozzles that produce a fine droplet spray.

High Volume Leaf-Stem Treatment: To minimize spray drift, do not use pressure exceeding 50 PSI at the spray nozzle and keep sprays no higher than brush tops. An agriculturally approved thickening agent may be used to reduce spray drift.


Apply Triclopyr 3SL at rates of 0.25 to 3 gallons per acre for the control of broadleaf weeds and woody plants. Apply rate in enough water to provide uniform and complete coverage of the plants to be controlled. Use only water suitable for spraying. Use of an agriculturally approved nonionic surfactant is recommended for all foliar applications. For best results, make applications when woody plants and weeds are actively growing.

Use higher rates within the range when brush averages 15 feet or more in height or when brush covers > 60% of the area to be treated. Resprouting may occur the year following treatment if lower rates are used on hard-to-control species. When easy-to-control brush species dominate, rates below those recommended may be effective. Consult State or Local Extension personnel for information.

For hard-to-control species such as ash, black gum, choke cherry, elm, maples, oaks, pines, or winged elm; during late summer applications when plants are mature; or during drought conditions; use higher rates of Triclopyr 3SL alone or use in combination with Tordon 101 Mixture. If lower rates are used on hard-to-control species, resprouting may occur in the year following treatment.

When applying Triclopyr 3SL in a tank mix with 2, 4-D 3.8 lb amine, like DMA 4 IVM, or low volatile ester herbicides, use higher rates of Triclopyr 3SL for satisfactory brush control.

When tank mixing, refer to the individual product labels for precautionary statements, restrictions, recommended rates, approved uses, and a list of weeds and woody plants controlled.

See label for Tankmix application instruction information.

Limitations, Restrictions, and Exceptions


Triclopyr 3SL is a postemergence systemic herbicide for the control of certain broadleaf weeds in rice (including ratoon rice). Triclopyr 3SL controls broadleaf weeds through foliar uptake; therefore, thorough coverage of target weeds is important. Do not apply under conditions which would allow spray drift to come in contact with adjacent broadleaf crops, as crop injury may occur.

General Use Precautions for RICE

- Refer to the GENERAL USE PRECAUTIONS section for additional precautions.

- Apply Triclopyr 3SL to rice only as directed on the label. Do not apply to any other crops.

- Do not apply this product to upland (non-flooded) rice.

- Direct application to ditches used to transport irrigation water is prohibited.

- Do not apply Triclopyr 3SL prior to the 2- to 3-leaf stage or after the 1/2” internode elongation stage of rice development (see the APPLICATION TIMING — RICE and WATER MANAGEMENT — RICE sections for more detail).

- Do not apply in the booting or subsequent stages of rice development.

- Do not apply within 60 days before harvesting rice.

- Applications made after rice is planted must be at least 20 days apart.

- Do not apply less than 20 days prior to draining the field unless the water is contained within a tailwater recovery system or other system appropriate for preventing discharge from rice fields. Water discharge is permitted 20 days following the last Triclopyr 3SL application within the system.

- Application to fields which have been leveled (except water leveling) within 12 months prior to application may result in serious rice injury in areas that have been cut or filled.

- Do not plant rotational crops other than rice for 4 months following treatment.

- Do not fish or commercially grow fish, shellfish, or crustaceans on treated acres within 12 months of treatment.

- Do not apply Triclopyr 3SL with 32% liquid nitrogen fertilizer or zinc fertilizer.

- Do not apply Triclopyr 3SL following application of Whip herbicides, except in California where Triclopyr 3SL may be applied 14 days after application of Whip.

- New York: Use of Triclopyr 3SL on rice grown in the state of New York is prohibited.

Application Timing – RICE

Apply Triclopyr 3SL as a preplant burn-down treatment prior to the planting of rice or to newly seeded rice or to ratoon rice following harvest of the first crop.

For the Preplant Burn-down treatment, apply Triclopyr 3SL at least 21 days before planting dry-seeded rice. Apply Triclopyr 3SL 14 days before planting water-seeded rice.

For the application to Newly Seeded Rice, apply from the 2- to 3-leaf stage up to the 1/2” internode elongation stage of rice development. Two applications can be made during this stage, but must be at least 20 days apart (see the Water Management – Rice section).

Application of Triclopyr 3SL to Ratoon Rice may be made within two weeks following harvest of the first crop for control of susceptible broadleaf weeds.

Note: Rice is most tolerant to postemergence applications of Triclopyr 3SL from the 2- to 3-leaf stage to the 1/2” internode elongation stage of rice development. Postemergence applications of the higher rates of Triclopyr 3SL may result in temporary rice injury that appears as leaf chlorosis or stunting. Rice will normally recover from these symptoms in two to four weeks. Treatments applied after the 1/2” internode elongation stage may result in increased rice injury. Do not apply in the booting or subsequent stages of rice development.

Water Management — RICE

Pre-flood Application: For pre-flood applications, rice should be in the 2- to 3-leaf stage or larger. A shallow flood may be applied no sooner than 72 hours following application of Triclopyr 3SL. If the weeds are drought stressed, flush the field before applying Triclopyr 3SL so that weeds are actively growing at time of treatment.

Post-flood Application: For post-flood applications, apply when weeds are well emerged above the water surface. Weeds submerged at the time of application will not be controlled. If water level is dropped to expose weeds prior to application, do not raise water level for at least 48 hours after application. Insure the growing points of rice plants at the soil surface (crown) are covered with water at the time of application.

Water-Seeded Rice: In water-seeded rice, do not apply before the 3- to 4-leaf stage or after the 1/2”

internode elongation stage of rice development.

Tolerance of Rice Varieties: Use Triclopyr 3SL on all rice varieties except the variety “Millie” when grown in the state of Louisiana. Because new rice varieties are frequently introduced, tolerance of a newly introduced rice variety to Triclopyr 3SL should be checked before treating large areas.

Application Rates and Weeds Controlled

Triclopyr 3SL should be applied to actively growing weeds at a rate of 10.7 to 16 fluid ounces per acre with a nonionic surfactant at 0.25 to 0.5% by volume or with a crop oil concentrate at 1% by volume (see Surfactants – RICE). Apply 16 fluid ounces of Triclopyr 3SL to control difficult-to-control species, when broadleaf weeds are large, or in post-flood applications.

Application Timing and Remarks

Best control is achieved with applications prior to weed flowering. Weeds larger than 24 inches in size may not be adequately controlled. Make postflood applications when weeds are well emerged above the water surface. Weeds submerged at application will not be controlled.

NOTE: Treat rice flatsedge when less than 4 inches tall.

Pre-Harvest Interval

60 days

Restricted Entry Interval

48 hours