Stellar B

Dow AgroSciences
Registered until
Registration number
Active materials


Stellar B Herbicide may cause damage to susceptible crop, ornamental, and other plants, even in minute quantities.
Avoid spray drift to any desirable vegetation. Coarse sprays are less likely to drift.
Do not spray during periods of high winds.
Do not graze or cut treated crops for forage until 7 days after application. MIXING Shake well before using. To ensure even mixing, half fill the sprayer tank with clean water, add the required amount of Stellar B Herbicide and agitate thoroughly. Add the remainder of the water and agitate before spraying. If the spray solution has been left standing, agitate thoroughly before use. Wash sprayer thoroughly after use.

Apply in 50 to 200 litres of water per hectare by ground equipment unless otherwise indicated. Higher water volumes will reduce the risk of crop injury. Apply in a minimum of 30 litres of water per hectare by aerial equipment. Use spray nozzles and pressures that deliver a medium to coarse quality spray. Avoid generating fine, driftable droplets. For knapsack, spot treatment applications, mix 165 mL of product in 10 L water. Spray to wet all foliage thoroughly.

Stellar B Herbicide may be recommended in tank mix with other products. Consult the label of the tank mix partner product, and follow the most stringent set of precautions, restrictions and directions for use.

Use the dose required to control the weeds present. To minimize the risk of crop injury, do not exceed the recommended rate listed for the crop. Higher rates may be required to control certain weed species. Rates above those recommended for a crop may result in significant crop injury, and should only be used when the risk of crop injury will be offset by the benefits of enhanced weed control. Apply in warm weather when the crop and weeds are growing well, and the weeds are at a susceptible stage. Avoid application during drought conditions or during exceptionally hot weather.

Apply at time of rapid growth, usually May, June and/or September.
Apply 1.8 to 3.7 litres of product in 100 to 1000 litres of water per hectare. 
Use the lower rate for species that are more susceptible such as chokecherry, western snowberry and willow.
Spray brush species up to 3 metres tall after foliage is well developed.
Applications soon after leaves are fully open usually give the best results. Apply sufficient spray volume to thoroughly wet all plant parts to the ground line.
Brush or trees above 3 metres tall should be cut close to the ground and sprayed when the regrowth is over 0.6 m tall.
With good growing conditions and adequate soil moisture, sprays may be applied up to 2 to 3 weeks before normal frost time.
To reduce potential drift hazard, a drift control agent may be added. Follow directions on the drift control agent label for the correct mixing sequence. Ground or aerial application.

Susceptible Weeds Controlled
Burdock (before the 4-leaf stage), Cocklebur, Plantain, Flixweed*, Lamb's-quarters, Mustards (except Dog and Tansy), Prickly lettuce, Ragweeds, Russian pigweed*, Shepherd’s-purse*, Stinkweed, Vetch, Wild radish, Wild (annual) sunflower. * Use the higher rate in the rate range.

Rates to Control Susceptible Weeds
Small seedlings, good growing conditions: 580 mL/ha. Large weeds, dry or cold weather, heavy infestations: 900 mL/ha. Resistance increases with age. Harder to Control Weeds Annual sow-thistle, Biennial wormwood, Blue lettuce*, Bluebur, Canada thistle*, Corn spurry*, Curled dock, Dandelion, Dog mustard, Field bindweed*, Field Horsetail*, Field pepper-grass, Goat’s-beard, Gumweed, Hairy galinsoga, Hedge bindweed*, Hemp-nettle (before the 4-leaf stage), Hoary cress*, Kochia, Lady’s thumb*, Leafy spurge*, Oak-leaved goosefoot, Perennial sow-thistle*, Purslane, Redroot pigweed, Russian knapweed*, Russian-thistle, Smartweed*, Sweet clover (seedling), Tansy mustard, Tartary buckwheat. * Top growth control. Rates for Harder to control Weeds Small seedlings, good growing conditions: 1.05 L/ha. Large weeds, dry or cold weather, heavy infestations: 1.50 L/ha. Resistance increases with age.


Directions for Use
Apply only by fixed-wing or rotary aircraft equipment which has been functionally and operationally calibrated for the atmospheric conditions of the area and the application rates and conditions of this label.
Label rates, conditions and precautions are product specific. Read and understand the entire label before opening this product. Apply only at the rate recommended for aerial application on this label. Where no rate for aerial application appears for the specific use, this product cannot be applied by any type of aerial equipment.
Ensure uniform application. To avoid streaked, uneven or overlapped application, use appropriate marking devices.

Use Precautions
Apply only when meteorological conditions at the treatment site allow for complete and even crop coverage. Apply only under conditions of good practice specific to aerial application as outlined in the National Aerial Pesticide Application Manual, developed by the Federal/Provincial/Territorial Committee on Pest Management and Pesticides. Do not apply to any body of water. Avoid drifting of spray onto any body of water or other non-target areas. Specified buffer zones should be observed. Coarse sprays are less likely to drift, therefore, avoid combinations of pressure and nozzle type that will result in fine particles (mist). Do not apply during periods of dead calm or when wind velocity and direction pose a risk of spray drift. Do not spray when the wind is blowing towards a nearby sensitive crop, garden, terrestrial habitat (such as shelter-belt) or aquatic habitat.

Operator Precautions
Do not allow the pilot to mix chemicals to be loaded onto the aircraft. Loading of premixed chemicals with a closed system is permitted. It is desirable that the pilot have communication capabilities at each treatment site at the time of application. The field crew and the mixer/loaders must wear chemical resistant gloves, coveralls and goggles or face shield during mixing/loading, cleanup and repair. Follow the more stringent label precautions in cases where the operator precautions exceed the generic label recommendations on the existing ground boom label. All personnel on the job site must wash hands and face thoroughly before eating and drinking. Protective clothing, aircraft cockpit and vehicle cabs must be decontaminated regularly.

Product Specific
Precautions Read and understand the entire label before opening this product. If you have questions, call the manufacturer or obtain technical advice from the distributor or your provincial agricultural representative.

For resistance management, Stellar B Herbicide is a Group 4 herbicide. Any weed population may contain or develop plants naturally resistant to Stellar B Herbicide and other Group 4 herbicides. The resistant biotypes may dominate the weed population if these herbicides are used repeatedly in the same field. Other resistance mechanisms that are not linked to site of action, but specific for individual chemicals, such as enhanced metabolism, may also exist. Appropriate resistance-management strategies should be followed.
To delay herbicide resistance:
Where possible, rotate the use of Stellar B Herbicide or other Group 4 herbicides with different herbicide groups that control the same weeds in a field.
Use tank mixtures with herbicides from a different group when such use is permitted.
Herbicide use should be based on an IPM program that includes scouting, historical information related to herbicide use and crop rotation, and considers tillage (or other mechanical), cultural, biological and other chemical control practices.
Monitor treated weed populations for resistance development.
Prevent movement of resistant weed seeds to other fields by cleaning harvesting and tillage equipment and planting clean seed.
Contact your local extension specialist or certified crop advisors for any additional pesticide resistance-management and/or integrated weed-management recommendations for specific crops and weed biotypes.

NOTICE TO USER: This pest control product is to be used only in accordance with the directions on the label. It is an offence under the Pest Control Products Act to use this product in a way that is inconsistent with the directions on the label. The user assumes the risk to persons or property that arises from any such use of this product.

Registered for culturesRate
Winter wheat1.05 l
Winter rye1.05 l
Spring wheat1.05 l
Spring barley1.05 l
Spring rye1.05 l
Spring oats0.9 l
Winter flax0.7 l
Spring flax0.7 l