Viper ADVPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

For weed control in field and succulent peas, soybeans, dry beans and established red and alsike clover for seed production
For sale for use in the Prairie Provinces and Peace River Region of British Columbia Only


GENERAL INFORMATION
VIPER ADV combines the two active ingredients: imazamox, belonging to herbicide mode of action Group 2, and bentazon belonging to the herbicide mode of action Group 6. Imazamox is a selective herbicide that when applied as an early post-emergence treatment may be absorbed through both the roots and foliage. Susceptible weeds stop growing and eventually die. Bentazon provides selective post-emergence control of many broadleaf weeds. Bentazon does not control grasses. Bentazon is a herbicide with mainly contact action. Uptake into the plant occurs primarily through the leaves. Thorough coverage of foliage is important for consistent weed control. Failure to penetrate crop or weed leaf canopies with the spray will result in incomplete control of small weeds growing underneath.
Cool weather conditions or drought will delay herbicidal activity and if prolonged, may result in poor weed control. Use of VIPER ADV in hot, humid weather may result in temporary leaf yellowing, leaf flecking, bronzing or burning. The crop usually outgrows this condition within 10 days (see Restrictions and Limitations).


REGISTERED CROPS
VIPER ADV will provide broad-spectrum weed control of most annual grasses and broadleaf weeds in field and succulent peas, soybeans, dry beans and established red and alsike clover for seed production.


DIRECTIONS FOR USE
APPLICATION INSTRUCTIONS
Field Peas and Soybeans
Timing - Early post-emergence
Rate - 1.0 L/ha of VIPER ADV + 2 L/ha nitrogen source (1) (UAN 28%)
Water Volume - 100 L/ha
Weeds Controlled - VIPER ADV will provide control of broadleaf and grass weeds as listed in the BROADLEAF WEED AND GRASS CONTROL section of this label.
Pre-harvest Interval - 60 days
Remark - Application should be made from the 3 - 6 node stage of field peas and the cotyledon to 4-leaf stage of soybeans and after weeds have emerged. Apply when broadleaf weeds are from the cotyledon to 4-leaf stage and when grassy weeds are at the 1 - 4 true leaf or early tillering.
For field peas, initial transient crop yellowing may be observed after application but this is outgrown and should not affect yield.
DO NOT make more than one application per season.

(1) Nitrogen source: A reduction in grass control can be observed without the addition of a nitrogen source (UAN 28%)


Dry Edible Beans (all types of the species Phaseolus vulgaris (1))
VIPER ADV may be topped up with application of BASAGRAN FORTE as below for control of additional weeds.
Timing - Early post-emergence
Rate - 1.0 L/ha of VIPER ADV + 0.36 L/ha of BASAGRAN FORTE + 2 L/ha nitrogen source (2) (UAN 28%)
Water Volume - 100 L/ha
Weeds Controlled - VIPER ADV will provide control of broadleaf and grass weeds as listed in the BROADLEAF WEED AND GRASS CONTROL section of this label.
Pre-harvest Interval - 60 days
Remark - Application should be made after 1st trifoliate leaf has fully expanded up to the 2nd trifoliate leaf stage of the dry bean and after weeds have emerged. Apply when broadleaf weeds are from the cotyledon to 4-leaf stage and when grassy weeds are at the 1 to 4-true leaf or early tillering. Initial transient crop yellowing may be observed after application but this is outgrown and should not affect yield.
DO NOT make more than one application per season.
Warning - Only the following dry bean types have been tested and demonstrate acceptable tolerance: Pinto, pink, red mexican, cranberry, black, great northern and navy.

Read and observe all label directions, including rates, restrictions and grazing limitations for each product in the tank mix. Follow the more stringent label precautionary measures for mixing, loading and applying stated on both product labels.


NOTE TO USER
The DIRECTIONS FOR USE for this product for the uses described above were developed by persons other than BASF Canada and accepted for registration by Health Canada under the User Requested Minor Use Label Expansion program. BASF Canada itself makes no representation or warranty with respect to performance (efficacy) and crop tolerance (phytotoxicity) claims for this product when used on the crops listed above.
Accordingly, the Buyer and User assume all risks related to performance and crop tolerances arising, and agree to hold BASF Canada harmless from any claims based on efficacy or phytotoxicity in connection with the uses described above.

(1) Dry common bean varieties may vary in their tolerance to herbicides, including to VIPER ADV. In particular, white (navy) beans are more susceptible to herbicide injury which can result in delayed maturity. Since not all dry common bean varieties have been tested for tolerance to VIPER ADV, first use of VIPER ADV should be limited to a small area of each variety to confirm tolerance prior to adoption as a general field practice or consult your seed supplier or BASF Business Representative for more information.
(2) Nitrogen source: A reduction in grass control can be observed without the addition of a nitrogen source (UAN 28%).


NOTE TO USER READ THE FOLLOWING BEFORE USING THIS PRODUCT FOR THE INDICATED SPECIAL USE APPLICATIONS:
The DIRECTIONS FOR USE for this product for the uses described below were developed by persons other than BASF Canada and accepted for registration by Health Canada under the User Requested Minor Use Label Expansion program. BASF Canada itself makes no representation or warranty with respect to performance (efficacy) and crop tolerance (phytotoxicity) claims for this product when used on the crops listed below.
Accordingly, the Buyer and User assume all risks related to performance and crop tolerances arising, and agree to hold BASF Canada harmless from any claims based on efficacy or phytotoxicity in connection with the uses described below.

Established Red and Alsike Clover for Seed Production Only
Timing - Early post-emergence
Rate - 1.0 L/ha of VIPER ADV + 2 L/ha nitrogen source (1) (UAN 28%)
Water Volume - 100 L/ha
Weeds Controlled - VIPER ADV will provide control of broadleaf and grass weeds as listed in the BROADLEAF WEED AND GRASS CONTROL section of this label.
Remark - DO NOT make more than one application per year.
Application should be made before the crop canopy closes, prior to flowering, and when weeds are actively growing. Apply when broadleaf weeds are from the cotyledon to 4-leaf stage and when grassy weeds are at the 1 to 4-true leaf or early tillering.
Crop injury may occur under hot, humid conditions. Speed of recovery will be influenced by growing conditions and weed control. Some leaf scorch may appear but the effect is transient and will outgrow within 3-4 weeks.

(1) A reduction in grass control can be observed without the addition of a nitrogen source (UAN 28%).


Succulent Peas
Timing - Early post-emergence
Rate - 1.0 L/ha of VIPER ADV + 2 L/ha nitrogen source (1) (UAN 28%)
Water Volume - 100 L/ha
Weeds Controlled - VIPER ADV will provide control of broadleaf and grass weeds (except for sow thistle (annual and perennial)) as listed in the BROADLEAF WEED AND GRASS CONTROL section of this label.
Pre-harvest Interval - 40 days
Remark - Application should be made from 3 – 6 nodes and after weeds have emerged. Apply when broadleaf weeds are from the cotyledon to 4-leaf stage and grassy weeds are 1-4 true leaves or early tillering. Initial transient crop yellowing may be observed after application but this is outgrown and should not affect yield.
Do not spray under hot humid conditions to avoid any bronzing of the pea pods.
Warning - Since not all types of succulent peas have been tested, first application should be limited to a small area or consult your seed supplier or BASF Business Representative for more information.

(1) A reduction in grass control can be observed without the addition of a nitrogen source (UAN 28%).

Succulent pea varieties may vary in their tolerance to herbicides, including to VIPER ADV. Some varieties are more susceptible to herbicide injury which can result in delayed maturity. Since not all succulent pea varieties have been tested for tolerance to VIPER ADV, first use of VIPER ADV should be limited to a small area of each variety to confirm tolerance prior to adoption as a general field practice.


BROADLEAF WEED AND GRASS CONTROL
VIPER ADV applied as an early post-emergence treatment at a rate of 1.0 L/ha + 2 L/ha nitrogen source (UAN 28%) will control weeds as listed below:
Barnyard grass
Cleavers (1) (including Group 2 resistant biotypes)
Cow cockle
Green foxtail
Green smartweed
Hemp nettle (1)
Japanese brome grass (1)
Kochia (1) (including Group 2 resistant biotypes)
Lamb’s-quarters
Lentils (including Clearfield Lentils (1))
Persian darnel
Redroot pigweed
Round-leaved mallow (1)
Russian thistle
Shepherd’s purse
Sowthistle (1), annual
Sowthistle (2), perennial
Stinkweed
Volunteer barley
Volunteer canary seed
Volunteer canola (Clearfield and non-Clearfield tolerant canola)
Volunteer durum wheat
Volunteer spring wheat (non-Clearfield tolerant wheat)
Volunteer tame oats
Wild buckwheat (1)
Wild mustard (including Group 2 resistant)
Wild oats
Yellow foxtail

(1) suppression only
(2) top growth suppression only


VIPER ADV + BASAGRAN FORTE applied as an early post-emergence treatment on dry edible beans at a rate of 1.0 L/ha + 0.36 L/ha BASAGRAN FORTE + 2 L/ha nitrogen source (UAN 28%) will provide control of the following weeds in addition to those listed above:
Prostate pigweed (1)
Spiny annual sowthistle (1)
Storks bill

(1) = suppression only


MIXING INSTRUCTIONS
1. When applying VIPER ADV, always start with a clean sprayer. Thoroughly clean the sprayer by flushing the system with water containing detergent. Refer to previously applied product labels for specific cleaning instructions.
2. Fill clean spray tank three-quarters of the required amount of clean water and start agitation.
3. Add the correct amount of VIPER ADV. Continue to agitate.
4. Add the correct amount of BASAGRAN FORTE for dry beans. Continue to agitate.
5. Add the correct amount of the nitrogen source while continuing agitation.
6. Continue agitation while filling the spray tank with the remaining amount of water.
7. Maintain continuous and constant agitation throughout application until spraying is complete.
8. After any break in spraying operation, agitate thoroughly before spraying again. Check inside the tank to ensure that sprayer agitation is sufficient to remix the spray materials. Do not allow the mixture to sit over night.
9. If an oil film starts to build up in the tank, drain it and clean the tank with strong detergent solution.
10. Immediately after use, thoroughly clean the sprayer by flushing the system with clean water containing detergent. Thoroughly flush tank, boom, hoses and in-line and nozzle screens with clean water to avoid possible injury to other crops.

Dispose of all rinsings in accordance with provincial regulations.


SPRAYING INSTRUCTIONS
Select proper nozzle to avoid spraying fine mist. For best results, use sprayers equipped with flat fan or similar nozzles to ensure coverage. Apply in a spray volume of 100L/ha and at a pressure of 275 kPa. For applications to dense weed infestations and thick canopies, use the higher spray volume. Better coverage of the product results in enhanced control of weeds.
Keep bypass line on or near bottom of tank to minimize foaming. Use 16 mesh suction screens,50 mesh screens elsewhere on sprayer.


FOLLOW CROPPING
Winter wheat can be planted 3 months after treatment (3 MAT) as a rotational crop.
Initial crop injury to non-Clearfield canola maybe observed. Avoid spray overlap as yield reduction may result. The following crops maybe grown safely the year following an application:
Canary seed
Field corn
Field peas
Soybeans
Clearfield Canola (1) (e.g., canola varieties with the Clearfield trait)
Non-Clearfield canola
Lentils
Spring wheat
Durum wheat
Spring barley
Sunflower
Tame oats
Flax
Chickpeas
Clearfield Sunflowers (1)(e.g., sunflower varieties with the Clearfield trait)

The following crop may be grown safely two years following an application:
Mustard (condiment type only)

There are insufficient data for other follow crops. Conduct a field bioassay (a test strip grown to maturity) the year before growing any crop other than those listed above.


RESTRICTIONS AND LIMITATIONS
1. DO NOT apply when weather conditions may cause spray drift from treated fields to adjacent crops. Clean sprayer thoroughly after use to avoid damage to the next crop sprayed.
2. Apply using ground equipment only. DO NOT APPLY BY AIR.
3. DO NOT enter or allow worker entry into treated areas during the restricted entry interval (REI) of 12 hours.
4. DO NOT apply directly to water. DO NOT contaminate irrigation or drinking water supplies or aquatic habitats by cleaning of equipment or disposal of wastes.
5. DO NOT graze the treated dry bean and field pea crops or cut for hay; sufficient data are not available to support such use.
6. DO NOT graze treated soybeans or cut for hay within 20 days of application.
7. DO NOT treat any crops not listed on this label.
8. DO NOT apply to any crops that have been subjected to stress from conditions such as hail damage, flooding, drought, hot, humid weather, widely fluctuating temperature conditions, prolonged cold weather or injury from prior herbicide applications, as crop injury may result.
9. Apply only when the potential for drift to areas of human habitation or areas of human activity such as houses, cottages, schools and recreational area is minimal. Take into consideration wind speed, wind direction, temperature inversions, application equipment and sprayer settings.
10. In some cases, tank mixing a pest control product with another pest control product or a fertilizer can result in biological effects that could include, but are not limited to: reduced pest efficacy or increased host crop injury. The user should contact BASF at 1-877-371-2273 or www.agsolutions.ca for information before mixing any pesticide or fertilizer that is not specifically recommended on this label. The user assumes the risk of losses that result from the use of tank mixes that do not appear on this label or that are not specifically recommended by BASF.


WARNING
1. DO NOT apply VIPER ADV when weather conditions may cause spray drift from treated areas to adjacent crops.
2. Lentils, adzuki and mung beans, cucumbers, sugar beets and sunflowers can be injured by VIPER ADV.


SPRAY DRIFT MANAGEMENT FOR GROUND APPLICATIONS
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) medium classification. Boom height must be 60 cm or less above the weed canopy or ground.
DO NOT apply by air.

Buffer Zones
The buffer zones specified in the table 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, 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.

Application Method – Field sprayer (1)
Crop - Field and succulent peas, soybeans, dry beans, established red and alsike clover
Buffer Zones (metres) Required for Protection of:
Aquatic Habitat (m):
Freshwater (m) – 11
Marine / Estuarine (m) – 11
Terrestrial Habitat (m) – 11

(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%.

When a tank mix 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.


RESISTANCE MANAGEMENT RECOMMENDATIONS
For resistance management, VIPER ADV is both a Group 2 and a Group 6 herbicide. Any weed population may contain or develop plants naturally resistant to VIPER ADV and other Group 2 and 6 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 VIPER ADV or other Group 2 and 6 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 or at www.agsolutions.ca.


(1) Methods of growing plants which are resistant to certain acetohydroxyacid synthase (AHAS) herbicides are protected by Canadian Patent No. 1341465. The use of this product in the practice of patented methods could constitute patent infringement. The purchase of this product conveys no license to the purchaser to practice the patented methods.