Dyvel DSP

Registered until
Registration number
Active materials


DyVel DSp Herbicide is used for systemic control of many broadleaf weeds in spring and winter wheat, barley (not underseeded to legumes), field corn, crop-free land (stubble fields and summerfallow), roadsides and pasture lands.

The symptoms of the effect on the weeds differ from 2,4-D. Visible effects on some of the hard to kill weeds may not be seen immediately as much of the dicamba action takes place in the roots. Under certain conditions, DyVel DSp Herbicide may cause shortening of the straw of cereals but yield will not be affected. Crops under stress from adverse environmental conditions such as excess moisture, drought, disease, etc., may suffer a further setback when this herbicide is applied. However, the crop injury that may occur is normally offset by the weed control obtained.

KEEP OUT OF REACH OF CHILDREN. DO NOT APPLY BY AIR. Avoid breathing spray or spray mist and avoid contact with skin. Keep in original container during storage. Do not allow spray, spray mist, visible or invisible vapours or air containing mist or vapours to contact plants other than those being sprayed.
If phenoxy susceptible plants are growing within a distance of 400 m from the area being sprayed, spray only when there is a light breeze away from the susceptible plants. Susceptible crops include grapes, tomatoes, tobacco, sugar beets, sunflowers, beans, soybeans, turnips, cauliflower and cabbages, as well as many other field, vegetable, ornamental and fruit crops. Spray drifting can be reduced by using high volume sprays under low pressure, coarse sprays and drop nozzles. Sprayers which have contained DyVel DSp Herbicide should not be used to apply other pesticides to phenoxy susceptible crops.
Do not contaminate streams, lakes, ponds, irrigation water, water used for livestock, or domestic purposes. Do not store open container near seeds, feeds, fertilizers, or pesticides including insecticides, fungicides, and weed killers other than those containing 2,4-D, MCPA or brushkillers.
Do not add surfactants, emulsifiable oils or oil concentrates to DyVel DSp Herbicide.
Do not apply DyVel DSp Herbicide when temperatures are above 27 C and the relative humidity is very high.
Do not apply DyVel DSp Herbicide if wind velocity exceeds 8 km/hr.
Spray DyVel DSp Herbicide only when wind is blowing away from susceptible adjacent crops.
If this pest control product is to be used on a commodity that may be exported to the U.S. and you require information on acceptable residue levels in the U.S., visit CropLife Canada’s web site at http://www.croplife.ca/.

When mixing/loading, wear coveralls over a long-sleeved shirt, long pants, chemical-resistant gloves, socks, shoes and protective eye wear (face shield or safety glasses). Rinse gloves before removal.
Coveralls should also be worn when open pouring from containers.
When applying or during clean-up and repair, wear coveralls over a long sleeved shirt, long pants, chemical resistant gloves, socks and shoes. Rinse gloves before removal.
Gloves are not required during application when the applicator is in an enclosed tractor.
When handling more than 265 kg a.e. of 2,4-D per day (approximately 120 hectares at highest agricultural rate – 2.24 kg a.e./ha), workers must also use a closed system.
For high volume hand wand applications, applicators must limit volume of solution used per day to 400 L (broadleaf control spot treatment only).

Wear freshly laundered clothing, and clean protective equipment daily.
Rinse gloves before removal.
Wash hands before eating, drinking, using tobacco or using the toilet.
If herbicide penetrates clothing, remove IMMEDIATELY, then wash thoroughly and put on clean clothing. Throw away clothing and other absorbent materials that have been drenched or heavily contaminated with this product’s concentrate.
After using this product, remove clothing and launder separately, and promptly and thoroughly wash hands and exposed skin with soap and water. Follow manufacturer’s instructions for cleaning personal protective clothing and equipment. If no such instructions for washables are provided, use detergent and hot water. Keep and wash personal protective equipment separately from household laundry.
After work, remove all clothing and shower using soap and water.

Toxic to small wild mammals, birds, aquatic organisms and non-target terrestrial plants. Observe buffer zones specified under DIRECTIONS FOR USE.
This product will harm other broadleaved plants in the vicinity of the treatment area. If applying this product using a handheld sprayer, do not directly spray or allow the spray to drift onto ornamentals or gardens.
Do not spray exposed roots of trees and ornamentals.

The use of this chemical may result in contamination of groundwater, particularly in areas where soils are permeable (e.g. sandy soil) and/or the depth to the water table is shallow.

Surface Runoff
To reduce runoff from treated areas into aquatic habitats, avoid application to areas with a moderate to steep slope, compacted soil or clay.
Avoid application of this product when heavy rain is forecast.
Contamination of aquatic areas as a result of runoff may be reduced by including a vegetative strip between the treated area and the edge of the water body.
To prevent runoff, avoid spraying on driveways, sidewalks or other hard surfaces. Do not irrigate within 24 hours after application.

As this product is not registered for the control of pests in aquatic systems, DO NOT use to control aquatic pests.
DO NOT use in residential areas, which are defined as sites where bystanders may be present during or after spraying, including homes, schools, parks, playgrounds, playing fields and public buildings.
DO NOT contaminate irrigation/drinking water supplies or aquatic habitats by cleaning of equipment or disposal of wastes.
Restricted-entry interval (REI): All crops – 12 hours.

Rotational Crop Restriction
A plant-back interval of 30 days is required for all crops other than those listed on this label.

Field Sprayer Application
DO NOT apply during periods of dead calm. Avoid application of this product when winds are gusty. DO NOT apply with spray droplets smaller than the American Society of Agricultural Engineers (ASAE) coarse classification. Boom height must be 60 cm or less above the crop or ground.

Buffer Zones
Use of the following spray methods or equipment DO NOT require a buffer zone: hand-held or backpack sprayer and spot treatment.
For application to rights-of-way (such as roadsides), buffer zones for protection of sensitive terrestrial habitats are not required; however, the best available application strategies which minimize off-site drift, including metrological conditions (e.g., wind direction, low wind speed) and spray equipment (e.g., coarse droplet sizes minimizing height above canopy), should be used. Applicators must, however, observe the specified buffer zones for protection of sensitive aquatic organisms.
Seasonal water bodies require buffer zones if there is water in them during application. Water bodies which do not fill on an annual basis need not be buffered.
The buffer zones specified in the tables below are required between the point of direct application and the closest downwind edge of sensitive terrestrial habitats (such as grasslands, forested areas, shelter belts, woodlots, hedgerows, rangelands, riparian areas and shrublands), sensitive freshwater habitats, (such as lakes, rivers, sloughs, ponds, prairie potholes, creeks, marshes, streams, reservoirs and wetlands) and estuarine/marine habitats.
When a tank mixture is used, consult the labels of the tank mix partners and observe the largest (most restrictive) buffer zone of the products involved in the tank mixture and apply using the coarsest spray (ASAE) category indicated on the labels for those tank mix partners.

Method of Application – Field sprayer (1)
Crop - Field corn, barley, wheat, stubble fields and summerfallow
Buffer Zones (metres) Required for the Protection of:
Freshwater Habitat of Depths:
Less than 1 m – 1
Greater than 1 m – 1
Estuarine/Marine Habitats of Depths:
Less than 1 m – 1
Greater than 1 m – 1
Terrestrial Habitat - 5

Method of Application – Field sprayer (1)
Crop - Pasture, roadsides (2)
Buffer Zones (metres) Required for the Protection of:
Freshwater Habitat of Depths:
Less than 1 m – 1
Greater than 1 m – 1
Estuarine/Marine Habitats of Depths:
Less than 1 m – 1
Greater than 1 m – 0
Terrestrial Habitat - 10

(1) For field sprayer application, buffer zones can be reduced with the use of drift reducing spray shields. When using a spray boom fitted with a full shield (shroud, curtain) that extends to the crop canopy, the labeled buffer zone can be reduced by 70%. When using a spray boom where individual nozzles are fitted with cone-shaped shields that are no more than 30 cm above the crop canopy, the labeled buffer zone can be reduced by 30%.
(2) Buffer zones for the protection of terrestrial habitats are not required for use on roadsides.

Maximum Application Rates, Maximum Seasonal Application Rates, Maximum Number of Applications per Year or Maximum Amount of Pesticide to be Handled per Person per Day
Site - Grasses – established pastures
Maximum Rate for a Single Application (g a.e. of 2,4-D/ha) – 2240
Cumulative Maximum Rate per Season (g a.e. of 2,4-D/ha) – 4480
Maximum Number of Applications per Year – 2
Comments - -

Site - Barley and wheat – post-emergence treatment in conventional tillage
Maximum Rate for a Single Application (g a.e. of 2,4-D/ha) – 880
Cumulative Maximum Rate per Season (g a.e. of 2,4-D/ha) – 880
Maximum Number of Applications per Year – 1
Comments - Rate for pre-emergence treatment in minimum tillage system remains the same as current label.

Site - Corn (field) – post-emergence (except for Jerusalem artichoke control)
Maximum Rate for a Single Application (g a.e. of 2,4-D/ha) – 600
Cumulative Maximum Rate per Season (g a.e. of 2,4-D/ha) – 600
Maximum Number of Applications per Year – 1
Comments - For Jerusalem artichoke control, 2 post-emergence applications of 325 g a.e. of 2,4-D/ha continue to be acceptable.

Site - Fallow land and crop stubble
Maximum Rate for a Single Application (g a.e. of 2,4-D/ha) – 2240
Cumulative Maximum Rate per Season (g a.e. of 2,4-D/ha) – 4480
Maximum Number of Applications per Year – 2
Comments - -

Site - Non-cropland areas – annual and perennial weeds control (roadsides)
Maximum Rate for a Single Application (g a.e. of 2,4-D/ha) – 2240
Cumulative Maximum Rate per Season (g a.e. of 2,4-D/ha) – 4480
Maximum Number of Applications per Year – 2
Comments - -

Shake this product well before using. Half fill the spray tank with clean water. Add the required amount of product and agitate thoroughly. Fill the tank with clean water and agitate well before use. NOTE: If spray solution has been left standing, agitate thoroughly before use.

Easy to Kill:
Wild buckwheat
Annual smartweeds
Russian thistle
Sow thistle
Corn spurry
Pigweeds (prostrate, redroot) (1)
Lamb’s-quarters (1)
Common ragweed (1)
Hedge bindweed
Mustards (wild, ball, tall, wormseed, yellow)
Volunteer cultivated
Volunteer canola (5)

 (1) including triazine resistant weeds

Hard to Kill:
Cow cockle
Field bindweed (2)
Jerusalem artichoke (1)
Tartary buckwheat

Suppression Only
Cleavers (3)
Round-leaved mallow

Top Growth Control Only
Canada thistle (4)

(1) Refer to the section “Jerusalem Artichoke Control in Field Corn”.
(2) Best results are obtained when DyVel DSp Herbicide is applied to field bindweed when it is actively flowering.
(3) Best results will be obtained on cleavers if applied when this weed is in the first to second whorl stage.
(4) Refer to the section “Program for the Gradual Eradication of Canada Thistle”.
(5) Best results will be obtained if application is made prior to the bolting of canola, when this weed is at the 2 - 4 leaf stage.

For best results, apply when weeds are actively growing and are in the 2 to 3 leaf stage. Use the low rate for the easy to kill weeds, when weed densities are low and growing conditions are optimum.
Use the high rate for the hard to kill weeds, (a) for suppression of cleavers and round-leaved mallow, (b) for top growth control of Canada Thistle, (c) when weeds are at an advanced stage of growth, (d) when weed densities are high or (e) under adverse weather conditions.

Rate of Application - Rate per Hectare
Spring and winter wheat - 850 mL - 1.1 litres
Barley - 850 mL
Corn (field) - 850 mL - 1.1 litres
Crop-free land (stubble fields and summerfallow) - 1.1 - 1.75 litres
Roadsides, pasture lands - 3.25 litres

Spray Volume - Water Volume per Hectare
Spring and winter wheat - 100 litres
Barley - 100 litres
Corn (field) - 200 - 350 litres

Timing of Application
Spring wheat - 3 - 5 leaf stage
Winter wheat - Examine crop for weeds as soon as growth starts in the spring. Winter annual weeds, such as flixweed, stinkweed and shepherd’s-purse, should be sprayed early while they are in the rosette stage. Spray before the crop is more than 30 cm high (top leaf extended).
Barley - 2 to 3 leaf stage

For control of wild oats and green foxtail populations in spring wheat, DyVel DSp Herbicide can be tank-mixed with Everest Solupak 70 DF.

Rate of Application - Spring wheat
Rate per Hectare - 850 mL DyVel DSp Herbicide + 43 g Everest Solupak 70 DF (1) + 0.25% v/v Agral 90 or Ag-Surf adjuvant

(1) Reduction in wild oat control may be observed with this tank-mix partner.

Please consult the Everest Solupak 70 DF label for additional precautions and restrictions.

Field Corn
Early Post Emergent Application
Apply DyVel DSp Herbicide as a broadcast application before corn reaches 15 cm in height (top leaf extended) and before the broadleaf weeds (1) reach 10 cm in height. Apply in a minimum of 200 litres of water per hectare. Minimize drift by applying at the lowest pressure that gives complete coverage of the crop and weeds with spray tips that generate coarse droplets.

(1) Includes triazine tolerant broadleaf weeds.

DyVel DSp
Herbicide can be tank-mixed with Aatrex Liquid 480 Herbicide for control of both broadleaf weeds* and annual grasses. Apply when field corn is 5 to 10 cm in height and before the broadleaf weed reaches 10 cm in height and the annual grasses exceed the two leaf stage. Apply DyVel DSp Herbicide at 850 mL - 1.1 litres per hectare plus Aatrex Liquid 480 Herbicide at 2.25 L per hectare.
Consult the product labels to be tank-mixed with DyVel DSp Herbicide for specific recommendations. Adhere to these product labels for precautions, warnings, restrictions, tank-mixing and spraying instructions, rotational crops and detailed directions for use.
DO NOT apply to sweet corn.

Field Corn
Directed Post Emergent Application
If the crop is beyond 30 cm in height, apply DyVel DSp Herbicide using drop nozzles. Do not allow the spray solution to contact the corn stalk above the point where the first leaf meets the stem. Apply in 250-300 litres of water per hectare. Minimize drift by spraying at a pressure of no more than 150 kPa with spray tips that generate coarse droplets. If weeds are well advanced a supplemental cultivation preceding or during application may be beneficial.
DO NOT apply to sweet corn.

Under certain environmental conditions (e.g., extended periods of either cold or hot dry weather), field corn may become brittle after applying DyVel DSp Herbicide. Do not cultivate for two weeks following application. Heavy winds during the two week period following application may cause some stalk lodging.
DyVel DSp Herbicide is not to be applied in the growth interval between 15 and 30 cm of field corn.

Wheat, barley, field corn
DO NOT permit lactating dairy animals to graze fields within 7 days after application.
DO NOT harvest as forage within 30 days after application.
Withdraw meat animals from treated fields at least 3 days before slaughter.

DyVel DSp Herbicide will control Jerusalem artichoke, when applied in a “TWO YEAR CONTINUOUS CORN PROGRAM”. Failure to follow the “Two Year Continuous Corn Program” will result in decreased control of the weed.

Year 1
Apply DyVel DSp Herbicide at 1.1 litres per hectare when Jerusalem artichoke is 30-45 cm in height, following instructions and precautions listed under the section “DIRECTED POST EMERGENT APPLICATION”. Re-apply DyVel DSp Herbicide at 1.1 litres per hectare 10 -14 days following the initial application mentioned above.

Year 2
Repeat the entire Year 1 program.

Do not cultivate infested areas of Jerusalem artichoke as this will spread tubers and rhizomes and result in decreased control.

For control of a wide range of broadleaf weeds, including bull thistle, chicory, goat’s-beard, ragwort, white cockle plus poison ivy, alders and sheep-laurel, apply DyVel DSp Herbicide at 3.25 litres per hectare in sufficient water for good coverage. For best results, apply in the spring when weeds are actively growing.
DO NOT apply on freshly seeded grasses and pastures until established. There is a possibility that plants poisonous to livestock will appear more palatable and could be grazed more readily after treatment (e.g. tansy ragwort, water hemlock, poison hemlock, death camas). Suitable precautions should be taken when such plants are present. Livestock should not be allowed to graze the treated area until poisonous plants have been removed, are dead or have resumed a normal growth habit.
DO NOT apply to a pasture land where legumes are present. Most legumes may be damaged or killed by this product.

Pre-Harvest Intervals
Stubble land, roadsides, pasture lands and uncropped land
DO NOT permit lactating dairy animals to graze fields within 7 days after application.
DO NOT harvest forage or cut for hay within 30 days after application.
Withdraw meat animals from treated fields at least 3 days before slaughter.


Year 1

In Stubble Fields
Apply DyVel DSp Herbicide at 1.1-1.75 litres per hectare to Canada thistle regrowth. Treatment at the 15-20 cm stage of actively growing Canada thistle will provide the best results. Do not apply within 2 weeks of a killing frost.

In Summerfallow Fields
Apply DyVel DSp Herbicide at 1.1-1.75 litres per hectare when Canada thistle is in the early bud stage. Do not cultivate for a minimum of 4 weeks after application.

Year 2
Next spring apply DyVel DSp Herbicide at 850 mL - 1.1 litres per hectare when weeds are young and actively growing. See section on “Rate of Application” for rates recommended for specific crops.

Continuation of this program will gradually eliminate Canada thistle.

For resistance management, DyVel DSp Herbicide is a Group 4 herbicide. Any weed population may contain or develop plants naturally resistant to DyVel DSp 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 DyVel DSp Herbicide or other Group 4 herbicides within a growing season (sequence) or among growing seasons 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. To delay resistance, the less resistance-prone partner should control the target weed(s) as effectively as the more resistance-prone partner.
Herbicide use should be based on an integrated weed management program that includes scouting, historical information related to herbicide use and crop rotation, and considers tillage (or other mechanical control methods), cultural (for example, higher crop seeding rates; precision fertilizer application method and timing to favour the crop and not the weeds), biological (weed-competitive crops or varieties) and other management practices.
Monitor weed populations after herbicide application for signs of resistance development (for example, only one weed species on the herbicide label not controlled). If resistance is suspected, prevent weed seed production in the affected area if possible by an alternative herbicide from a different group.
Prevent movement of resistant weed seeds to other fields by cleaning harvesting and tillage equipment when moving between fields, and planting clean seed.
Have suspected resistant weed seeds tested by a qualified laboratory to confirm resistance and identify alternative herbicide options.
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.
For further information or to report suspected resistance, contact BASF at 1-877-371-2273.

Registered for culturesRate
Corn0.85 - 1.1 l
Spring barley0.85 l
Winter barley0.85 l
Spring wheat0.85 - 1.1 l
Winter wheat0.85 - 1.1 l