Agrobase Canada
Blackhawk Registration expired
NUFARM - Herbicide
32111

DIRECTIONS FOR USE
BlackHawk Herbicide is designed for use as a contact and systemic herbicide for broadleaf weed control. BlackHawk Herbicide will damage emerged crop plants, even in minute quantities. Apply BlackHawk Herbicide prior to the emergence of the crop, either as a pre-seeding or postseeding application. BlackHawk Herbicide does not provide residual weed control. Only weeds that have emerged at the time of application will be controlled. Apply when weeds are in the seedling stage and actively growing. Pyraflufen-ethyl, a member of the phenyl pyrazole class of herbicides, inhibits the protoporphyrinogen oxidase (PPO) enzyme which results in cell membrane destruction and necrosis. 2,4-D, a member of the phenoxy class of herbicides, mimics the plant growth regulator indol-3- acetic acid (auxin), interfering with cell enlargement and division, and development in susceptible plants. Warm, moist growing conditions promote active weed growth and enhance the activity of BlackHawk Herbicide by allowing maximum foliar uptake and contact activity. Weeds hardened off by cold weather or drought stress may not be adequately controlled or suppressed and regrowth may occur.

APPLY BlackHawk Herbicide WITH GROUND EQUIPMENT ONLY. 
For best results, ensure thorough spray coverage of target weeds. Refer to the specific use directions sections of this label for complete use details. Do not permit lactating dairy animals to graze fields within 7 days after application. Do not graze or cut treated crops for forage until 30 days after application. Withdraw meat animals from treated fields at least 3 days before slaughter. 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 S572.1) medium classification. Boom height must be 60 cm or less above the crop or ground. DO NOT apply by air.
Buffer zones: 
Use of the following spray methods or equipment DO NOT require a buffer zone: hand-held or backpack sprayer and spot treatment and soil incorporation. 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 shrub lands) and sensitive freshwater habitats (such as lakes, rivers, sloughs, ponds, prairie potholes, creeks, marshes, streams, reservoirs and wetlands).
For tank mixes, 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. The buffer zones for this product can be modified based on weather conditions and spray equipment configuration by accessing the Buffer Zone Calculator on the Pest Management Regulatory Agency web site.

REGISTERED CROPS: 
BlackHawk Herbicide can be applied pre-seeding or post-seeding prior to crop emergence in the crops from the crop groups listed below as well as canary seed and summerfallow. Crops not listed can be planted one month after BlackHawk Herbicide application.
Crop Group 6: Legume Vegetable
Soybean (applied a minimum of 3 days before crop emergence)
Crop Group 15: Cereal Grains
Barley, corn (field), oats (applied a minimum of 7 days before planting), rye (spring and fall), triticale and wheat (spring, durum, winter)

MIXING INSTRUCTIONS: 
1. Select a spray volume and nozzle type that will ensure thorough coverage and uniform spray pattern. Use a minimum of 50 - 100 L spray volume per hectare.
2. Fill the spray tank 1/3 full with fresh water and start agitation.
3. Add the required amount of BlackHawk Herbicide to the tank, agitate well.
4. If tankmixing with glyphosate, add the required amount of glyphosate to the tank, agitate well. Always consult the label of the tank mix partner(s) for minimum spray volume requirements and apply the tank mixture using a water volume recommended for all products.
5. Continue to fill tank and maintain agitation for at least 5 minutes to ensure thorough mixing.
6. Use the spray preparation of BlackHawk Herbicide within 24 hours. Product degradation may occur under alkaline conditions (pH >7.5). If spray solution is left standing without agitation, thoroughly agitate before resuming the spraying operation.

APPLICATION INSTRUCTIONS:
Apply the spray mixture uniformly with properly calibrated ground equipment only. Ensure thorough coverage and a uniform spray pattern. Flat fan nozzles are recommended (minimum 50 - 100 L spray volume per hectare). Use 50 mesh filter screens or larger (metal or nylon). A spray pressure of 210 - 275 kPa is recommended. Apply uniformly.
BlackHawk Herbicide ALONE 
Rate: Apply 740 mL to 1.1 L of BlackHawk Herbicide per hectare.
Timing: For best results apply to emerged, young, actively growing weeds that are less than 5 cm tall or across. Thorough coverage of target weeds is essential.
Weed control may be reduced if the plants are beyond the recommended application growth stage, and during stress conditions, e.g. drought, heat or cold stress, or in heavy infestations where overlapping leaves prevent spray contact. In these situations, use up to 1.1 L/ha.
BlackHawk Herbicide + Glyphosate 
Apply BlackHawk Herbicide tank mixed with glyphosate prior to seeding or post-seeding before crop emergence. Rates and formulation of glyphosate are detailed in the following table. Follow all precautions, limitations, timing recommendations, crop rotations and sprayer cleanup on the tank mix partner product label.
Weeds controlled: 
All weeds controlled by BlackHawk Herbicide and glyphosate alone (see the tank mix partner label). For weeds that are not controlled by the chosen rate of glyphosate, apply the tank mixture in accordance with the recommended timing for control of the weed with BlackHawk Herbicide alone. 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 Nufarm Agriculture Inc. at 1-800- Page 12 of 13 868-5444 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 Nufarm Agriculture Inc.

SPRAYER CLEANUP: 
To avoid subsequent injury to crops, immediately after spraying and prior to spraying other crops, thoroughly remove all traces of BlackHawk Herbicide from mixing and spray equipment as follows:
Drain tank; then flush tank, boom and hoses with clean water for a minimum of ten minutes.
Next, prepare a sprayer cleaning solution by adding 3 litres of ammonia (containing at least 3% active) per 100 litres of clean water. Prepare sufficient cleaning solution to allow the operation of the spray system for a minimum of 15 minutes to thoroughly flush the tank, hoses, spray boom and spray nozzles.
If possible, leave the ammonia solution or fresh water left in the spray tank, hoses, spray booms and spray nozzles overnight or during storage to dissolve and dilute any remaining traces of herbicide.
Nozzles and screens may be cleaned separately in a bucket containing cleaning agent and water.
DO NOT contaminate irrigation or drinking water supplies or aquatic habitats by cleaning of equipment or disposal of wastes.

RESISTANCE MANAGEMENT RECOMMENDATIONS: 
For resistance management, BlackHawk Herbicide is a Group 4 and 14 herbicide. Any weed population may contain or develop plants naturally resistant to BlackHawk Herbicide and other Group 4 and 14 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 BlackHawk Herbicide or other Group 4 and 14 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. 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.

Effective
Crops
Soybeans
BBCH
0 - 0
Registred norm
0.74 - 1.1
Preharvest Interval
-
Crops
Spring barley
BBCH
0 - 0
Registred norm
0.74 - 1.1
Preharvest Interval
-
Crops
Winter barley
BBCH
0 - 0
Registred norm
0.74 - 1.1
Preharvest Interval
-
Crops
Corn, maize
BBCH
0 - 0
Registred norm
0.74 - 1.1
Preharvest Interval
-
Crops
Spring oats
BBCH
0 - 0
Registred norm
0.74 - 1.1
Preharvest Interval
-
Crops
Winter oats
BBCH
0 - 0
Registred norm
0.74 - 1.1
Preharvest Interval
-
Crops
Winter rye
BBCH
0 - 0
Registred norm
0.74 - 1.1
Preharvest Interval
-
Crops
Spring rye
BBCH
0 - 0
Registred norm
0.74 - 1.1
Preharvest Interval
-
Crops
Winter triticale
BBCH
0 - 0
Registred norm
0.74 - 1.1
Preharvest Interval
-
Crops
Spring triticale
BBCH
0 - 0
Registred norm
0.74 - 1.1
Preharvest Interval
-
Crops
Winter wheat
BBCH
0 - 0
Registred norm
0.74 - 1.1
Preharvest Interval
-
Crops
Spring wheat
BBCH
0 - 0
Registred norm
0.74 - 1.1
Preharvest Interval
-
Effective
Ball mustard
Ball mustard
Neslia paniculata ★★★
Black mustard
Black mustard
Brassica nigra ★★★
Calepina
Calepina
Calepina irregularis ★★★
Cleavers
Cleavers
Galium aparine ★★★
Cocklebur
Cocklebur
Xanthium strumarium ★★★
Common ragweed
Common ragweed
Ambrosia artemisiifolia ★★★
Daisy fleabane
Daisy fleabane
Erigeron annuus ★★★
False flax
False flax
Camelina sativa ★★★
False ragweed
False ragweed
Franseria acanthicarpa ★★★
Fat hen
Fat hen
Chenopodium album ★★★
Field mustard
Field mustard
Brassica campestris ★★★
Field penny-cress
Field penny-cress
Thlaspi arvense ★★★
Flixweed
Flixweed
Descurainia sophia ★★★
Giant ragweed
Giant ragweed
Ambrosia trifida ★★★
Goat’s-beard
Goat’s-beard
Aruncus dioicus ★★★
Hare's ear mustard
Hare's ear mustard
Conringia orientalis ★★★
Hedge mustard
Hedge mustard
Sisymbrium officinale ★★★
Indian hedge mustard
Indian hedge mustard
Sisymbrium orientale ★★★
Kochia
Kochia
Bassia scoparia ★★★
Plantain
Plantain
Musa paradisiaca ★★★
Prickly lettuce
Prickly lettuce
Lactuca serriola ★★★
Redroot pigweed
Redroot pigweed
Amaranthus retroflexus ★★★
Round-leaved mallow
Round-leaved mallow
Malva pusilla ★★★
Russian pigweed
Russian pigweed
Axyris amaranthoides ★★★
Russian thistle
Russian thistle
Salsola kali ★★★
Shepherd's purse
Shepherd's purse
Capsella bursa-pastoris ★★★
Smooth sowthistle
Smooth sowthistle
Sonchus oleraceus ★★★
Stinging nettle
Stinging nettle
Urtica dioica ★★★
Sunflowers
Sunflowers
Helianthus ★★★
Tares
Tares
Vicia sativa ★★★
Tumble mustard
Tumble mustard
Sisymbrium altissimum ★★★
Volunteer canola
Volunteer canola
Brassica napus ★★★
White mustard
White mustard
Sinapis alba ★★★
Wild mustard, charlock
Wild mustard, charlock
Sinapis arvensis ★★★
Wild radish
Wild radish
Raphanus raphanistrum ★★★
Wormseed mustard
Wormseed mustard
Erysimum cheiranthoides ★★★
Black bindweed
Black bindweed
Fallopia convolvulus ★★
Common dandelion
Common dandelion
Taraxacum officinale ★★
Cow cockle
Cow cockle
Vaccaria hispanica ★★
Fleabane
Fleabane
Conyza canadensis ★★
Common burdock
Common burdock
Arctium minus
European stickseed
European stickseed
Lappula squarrosa
Narrowleaf hawksbeard
Narrowleaf hawksbeard
Crepis tectorum