2,4-D amine (several trade names) or MCPA (several trade names)
Rate 0.75 lb ae/A
Time Apply in spring when winter wheat has at least four tillers and 12 leaves, but before jointing.
Remarks Do not apply in the fall. Do not apply between jointing and dough stage of growth.
Site of action (both) Group 4: synthetic auxin
Chemical family (both) phenoxy acetic acid
bromoxynil (Maestro, Broclean, Agristar Brox and other trade names)
Rate 0.375 to 0.5 lb ai/A (1.5 to 2 pints/A)
Time Apply from winter wheat emergence to the boot stage. Apply to weeds up to the 4-leaf stage or 2 inches high or 1 inch wide, whichever is first. Certain weeds may be controlled when larger; see label for size recommendations and application timings.
Remarks Do not apply to crops under moisture stress. Do not exceed 0.5 lb ai/A total per season.
Site of action Group 6: photosystem II inhibitor
Chemical family Nitrile
bromoxynil + MCPA (Maestro Advanced and other trade names)
Rate 0.25 to 0.5 lb ai/A bromoxynil + 0.25 to 0.5 lb ae/A MCPA (12.8 to 25.6 oz/A Maestro Advanced)
Time Apply to winter wheat after 3-leaf stage but before boot stage. Apply to weeds up to the 4-leaf stage or 2 inches high. Certain larger weeds may be controlled; see label for size recommendations and application timings.
Remarks Do not apply when crops are under moisture stress.
Site of action (bromoxynil) Group 6: photosystem II inhibitor; (MCPA) Group 4: synthetic auxin
Chemical family (bromoxynil) nitrile; (MCPA) phenoxy acetic acid
bromoxynil + bicyclopyrone (Talinor)
Rate 0.156 to 0.207 lb ae/A bromoxynil + 0.033 to 0.044 lb ai/A bicyclopyrone (13.7 to 18.2 oz/A Talinor)
Time Apply to winter wheat after 2-leaf stage up to pre- boot stage. Apply to weeds up to the 4-leaf stage or 2 inches high. Certain larger weeds may be controlled; see label for size recommendations and application timings.
Remarks Do not apply when crops or weeds are under moisture stress. Co-packed with CoAct+ additive which must be used with Talinor. COC at 1% v/v is the preferred adjuvant for use with Talinor.
Site of action (bromoxynil) Group 6: photosystem II inhibitor; (bicyclopyrone) Group 27:4-hydroxyphenylpyruvatediooxygenase (HPPD) Inhibitor
Chemical family (bromoxynil) nitrile; (bicyclopyrone) triketone
bromoxynil + MCPA + fluroxypyr (Carnivore)
Rate 0.20 to 0.31 lb ai/A bromoxynil + 0. 20 to 0.31 lb ae/A MCPA + 0.08 to 0.125 lb ae/A fluroxypyr (1 to 1.5 pints/A Carnivore)
Time Apply to winter wheat after 2-leaf stage through flag leaf emergence. Apply to weeds up to the 4-leaf stage, or 8 inches high. Certain larger weeds may be controlled; see label for size recommendations and application timings.
Remarks Do not apply when crops are under moisture stress. Do not apply more than 2.4 pints/A of Carnivore per growing season. Do not harvest treated wheat as forage or allow livestock to graze treated wheat within 45 days of application. Do not apply within 40 days of harvesting grain or straw.
Site of action (bromoxynil) Group 6: photosystem II inhibitor; (MCPA and fluroxypyr) Group 4: synthetic auxin
Chemical family (bromoxynil) nitrile; (MCPA) phenoxy acetic acid; (fluroxypyr) pyridine
bromoxynil + pyrasulfotole (Huskie)
Rate 0.186 to 0.254 lb ai/A (11 to 15 oz/A Huskie)
Time Apply to winter wheat from one leaf up to flag-leaf emergence. See label for weed size recommendations and application timings, but control of most species is best at the 11 fl oz/A rate when weeds have from one to six leaves.
Remarks For most consistent weed control under adverse growing conditions, add AMS or an ammonium nitrogen source as directed by the spray additives section of the label. Huskie may be tank mixed with a variety of other broadleaf and grass herbicides; see label for instructions.
Caution See label for crop rotation restrictions. Wheat, triticale, and oats may be planted 7 days after application; alfalfa, canola, field pea, sugar beet and potatoes 9 months after application. Do not graze or harvest treated winter wheat for forage within 25 days of application, or harvest grain and straw within 60 days of application. Do not exceed one application of Huskie to winter wheat per year. Do not tank mix Huskie with tebuconazole fungicides.
Site of action (bromoxynil) Group 6: photosystem II inhibitor; (pyrasulfotole) Group 27: inhibits 4hydroxyphenylpyruvatedioxygenase (4-HPPD)
Chemical family (bromoxynil) nitrile; (pyrasulfotole) isoxazole
carfentrazone (Aim EC)
Rate 0.008 to 0.031 lb ai/A (0.5 to 2 oz/A Aim EC)
Time For emerged winter wheat, use 0.5 to 1 oz/A Aim EC. Use higher rates when treating more mature weeds or dense vegetative growth. Do not exceed 0.031 lb ai/A of Aim per season. Apply to emerged and actively growing weeds. Apply to wheat up to jointing stage. For best performance, apply to weeds up to 4 inches high and rosettes less than 3 inches across.
Remarks Aim is excellent for controlling bedstraw and speedwells. Use with an 80% ai nonionic surfactant at 2 pints/100 gal.
Caution Plant registered crops any time after applying Aim, subject to specific crop rotation restrictions on the Aim label. Root and leafy vegetables may be planted 30 days after application. All other crops may be planted 12 months after application. Crop injury may increase with tank-mixtures; see label for tank mixing guidelines.
Site of action Group 14: protoporphyrinogen oxidase inhibitor
Chemical family Triazinone
florasulam + halauxifen (Quelex)
Rate 0.075 oz ai/A florasulam + 0.075 oz ae/A halauxifen (0.75 oz/A Quelex)
Time Apply to winter wheat postemergence from the 2-leaf stage up to flag leaf emergence.
Remarks Results are best when weeds are young and actively growing. Use with a nonionic surfactant 0.25% v/v or crop oil concentrate or methylated seed oil (1% v/v) unless applied with an EC tank mix partner.
Caution See label for specific crop rotation restrictions.
Site of action (florasulam) Group 2: acetolactate synthase (ALS) inhibitor; (halauxifen) Group 4: synthetic auxin
Chemical family (florasulam) Triazolopyrimidine sulfonamide; (halauxifen) Arylpicolinate
florasulam + MCPA (Orion)
Rate 0.004 lb ai/A florasulam + 0.31 lb ai/A MCPA (17 oz/A Orion)
Time Apply to winter wheat postemergence, from the 3-leaf stage up to jointing.
Remarks Results are best when weeds are young and actively growing. Orion will control chickweeds, wild buckwheat, mustard spp., and bedstraw and can be tank mixed with other grass and broadleaf herbicides to broaden the weed control spectrum.
Caution See label for specific crop rotation restrictions. For most crops the plant-back interval is 3 to 9 months. Do not graze wheat within 7 days of an Orion application, and do not harvest wheat within 60 days of an application.
Site of action (florasulam) Group 2: acetolactate synthase (ALS) inhibitor; (MCPA) Group 4: synthetic auxin
Chemical family (florasulam) Triazolopyrimidine; (MCPA) Phenoxy acetic acid
florasulam + fluroxypyr (Starane Flex)
Rate 0.092 lb ai/A (13.5 fl oz/A Starane Flex)
Time Apply to actively growing wheat from 3-leaf to flag leaf emergence. Apply when susceptible broadleaf weeds are actively growing and less than 4 inches tall.
Remarks Only weeds emerged at the time of treatment will be controlled. Best results are obtained from application made to seedling weeds.
Site of action Group 2: acetolactate synthase (ALS) inhibitor and Group 4: synthetic auxin
Chemical family (florasulam) Triazolopyrimidine sulfonamide; (fluroxypyr) Pyridine
fluroxypyr (Starane Ultra)
Rate 0.10 to 0.245 lb ai/A fluroxypyr (0.3 to 0.7 pint/A Starane Ultra)
Time For best performance, apply to emerged and actively growing broadleaf weeds less than 4 inches high or 1 inch wide. Use higher rate for susceptible broadleaf weeds up to 8 inches tall. Only weeds that have emerged at time of application will be controlled. Apply to 2-leaf winter wheat up to flag leaf emergence.
Remarks Do not exceed 0.7 pints/A per growing season.
Caution Do not harvest winter wheat for hay or silage from treated area within 7 days of application. Preharvest interval is 40 days.
Site of action Group 4: synthetic auxin
Chemical family Pyridine
fluroxypyr + bromoxynil (Starane NXT)
Rate 0.0625 to 0.125 lb ai/A fluroxypyr + 0.25 to 0.5 lb ai/A bromoxynil (14 to 27.4 oz/A Starane NXT)
Time For best performance, apply to emerged and actively growing weeds up to 4 to 8 inches tall depending on rate. Apply to wheat from 3-leaf stage through flag leaf emergence.
Remarks Provides control of broadleaf weeds including kochia, wild buckwheat, Russian thistle, and sunflower. Tank-mix compatible with MCPA, thifensulfuron or 2,4-D and most grass herbicides.
Caution Any rotational crop may be planted 120 days after application. Do not apply within 45 days of wheat harvest or allow livestock to graze within 45 days of application. Do not apply with fungicides containing strobilurin chemistry.
Site of action (fluroxypyr) Group 4: synthetic auxin; (bromoxynil) Group 6: photosystem II inhibitor
Chemical family (fluroxypyr) Pyridine; (bromoxynil) Nitrile
fluroxypyr + halauxifen-methyl (Pixxaro EC)
Rate 0.109 lb ae/A fluroxypyr + 0.005 lb ae/A halauxifen (6 fl oz/A Pixxaro EC)
Time Apply to actively growing wheat from 2-leaf growth stage up to flag leaf emergence (Zadoks scale 39). Only weeds emerged at the time of treatment will be controlled.
Remarks Generally, this product does not require the use of an adjuvant to achieve satisfactory weed control. An adjuvant may be added to optimize herbicidal activity when applications are made: 1) at lower use rates or lower carrier volumes; 2) under conditions of cool temperature, low relative humidity or drought; 3) to small, heavily pubescent kochia; or 4) when a tank mix partner recommends the use of an adjuvant. Pixxaro EC is rainfast within 1 hr after application.
Caution Do not apply more than 6.0 fl oz/A per growing season. Do not apply within 60 days of harvest.
Site of action Group 4: synthetic auxin
fluroxypyr + clopyralid + pyroxsulam (PerfectMatch)
Rate 0.097 lb ae/A fluroxypyr + 0.097 lb ae/A clopyralid + 0.013 lb ai/A pyroxsulam (1 pint/A PerfectMatch)
Time Apply to actively growing wheat from the 3-leaf to jointing stage. Treat after most weeds have emerged.
Remarks Apply with a nonionic surfactant at 0.25% to 0.50% v/v (1 to 2 quarts/100 gal spray solution) and ammonium sulfate at 1.5 lb/A. Warm, moist growing conditions promote active weed growth and enhance activity of PerfectMatch. Weeds hardened off by cold weather or drought may not be adequately controlled or suppressed, and may re-grow. PerfectMatch is rainfast within 4 hr after application.
Caution Do not apply more than 1 pint/A per growing season. Limit NIS rate to 0.25% when tank mixing with up to 6 fluid oz of EC formulated products per acre. Do not use any surfactant when total EC products exceed 6 fluid oz/A. Do not apply within 60 days of wheat harvest.
Site of action (pyroxsulam) Group 2: acetolactate synthase (ALS) inhibitor; (fluroxypyr and clopyralid) Group 4: synthetic auxin
Chemical family (fluroxypyr) pyridine; (clopyralid) pyridine; (pyroxsulam) triazolopyrimidine sulfonamide
metsulfuron (several trade names) + another broadleaf herbicide with a different mode of action
Rate 0.004 lb ai/A
Time Apply postemergence after 2-leaf but before boot stage.
Remarks Metsulfuron controls a wide range of broadleaf weeds, and inhibits Canada thistle growth. For best results, add a nonionic surfactant of at least 80% ai at 1 to 2 quarts/100 gal. For weeds that are difficult to control, apply while they are actively growing and not more than 2 inches tall or in diameter. To broaden the spectrum of control, tank mix with a suitable registered herbicide. Time application to coincide with recommendation for specific tank-mix partner.
Caution Metsulfuron can persist in soil. Carefully follow label instructions about crop rotation restrictions.
Site of action Group 2: acetolactate synthase (ALS) inhibitor
Chemical family Sulfonylurea
pinoxaden + fluroxypyr + halauxifen (Rezuvant)
Rate 0.0535 lb ai/A (pinoxaden) + 0.1115 lb ae/A (fluroxypyr) + 0.0045 lb ae/A (halauxifen) (16.4 oz/A Rezuvant)
Time Apply to wheat from the two-leaf crop growth stage to flag leaf emergence (Zadok's scale 39).
Remarks Experience is lacking in the PNW with this product. For best results apply when susceptible broadleaf weed seedlings are actively growing and less than 4 inches tall. Only weeds emerged at the time of treatment will be controlled.
Caution Active ingredients may be present in plant materials for over 30 days or more after application. Do not compost plant material from treated area. Do not use manure from animals that have grazed or consumed forage from treated areas for compost, mulch, or mushroom spawn until 30 days after application.
Site of action Group 1: acetyl CoA carboxylase (ACCase) inhibitor + Group 4: synthetic auxin
Chemical family (pinoxaden) Phenylpyrazolin; (fluroxypyr) Pyridine; (halauxifen) Arylpicolinate
prosulfuron (Peak)
Rate 0.22 to 0.29 oz ai/A (0.38 to 0.5 oz/A Peak)
Time Apply postemergence from the three-leaf to second-joint stage of growth.
Remarks Results are best when weeds are young and actively growing. Apply with nonionic surfactant of at least 80% ai at 1 to 2 quarts/100 gal, or a crop oil concentrate of at least 12% emulsifier at 1 to 4 pints/A.
Caution Carefully follow label instructions on crop rotations. Do not let spray drift onto non-target crops. See label for cautions on tank-mix or sequential applications with organophosphate insecticides and applications just before or during adverse conditions such as cold weather. Do not harvest grain until 60 days after application. Do not graze or feed forage until 30 days after application.
Site of action Group 2: acetolactate synthase (ALS) inhibitor
Chemical family Sulfonylurea
prosulfuron (Peak) + another broadleaf herbicide with a different mode of action
Rate 0.009 to 0.018 lb ai/A (0.25 to 0.5 oz/A Peak)
Time Apply postemergence from the 3-leaf to second-joint stage.
Remarks Results are best when weeds are young and actively growing. Apply with nonionic surfactant of at least 80% ai at 1 to 2 quarts/100 gal or a crop oil concentrate of at least 12% emulsifier at 1 to 4 pints/A.
Caution Carefully follow label instructions on crop rotation restrictions. Do not let spray drift to non-target crops. See label for cautions on tank-mix or sequential applications with organophosphate insecticides and applications just before or during adverse conditions such as cold weather.
Site of action Group 2: acetolactate synthase (ALS) inhibitor
Chemical family Sulfonylurea
pyraflufen (Vida)
Rate 0.0008 to 0.002 lb ai/A (0.5 to 1.0 oz/A Vida)
Time Apply to winter wheat that is 6 to 8 inches tall up to jointing. Apply to seedling weeds that are less than 4 inches tall or less than 3 inches in diameter if in the rosette stage.
Remarks For postemergence broadleaf weed control in winter wheat. May be tank mixed with the synthetic auxin herbicides to broaden the weed control spectrum. Always apply with a methylated seed oil or nonionic surfactant at a rate of 0.5% v/v for optimum activity.
Caution Do not tank mix with products containing bromoxynil because severe wheat injury may result. Do not exceed two applications per season. Allow a minimum of 30 days between applications. Do not graze wheat within 7 days of application or harvest wheat for hay within 21 days of application. The preharvest interval for grain is 60 days.
Site of action Group 14: protoporphyrinogen oxidase inhibitor
Chemical family Phenylpyrazole
thifensulfuron + tribenuron (several trade names) + another broadleaf herbicide with a different mode of action
Rate 0.014 to 0.028 lb ai/A
Time Apply after crop is in the 2-leaf stage through the boot stage.
Remarks Results are best when weeds are young and actively growing. For best performance, apply when conditions include temperatures of 60°F or higher and adequate soil moisture before, during, and immediately after treatment. Use with an 80% ai nonionic surfactant at 2 pints/100 gal.
Caution Wheat, barley, and oats may be replanted any time after application. Sugar beets and winter canola can be planted 60 days after application. All other crops can be planted 45 days after application.
Site of action (both) Group 2: acetolactate synthase (ALS) inhibitor
Chemical family (both) sulfonylurea
thifensulfuron + tribenuron + fluroxypyr (Supremacy)
Rate 1.0 to 1.88 oz ae/A fluroxypyr + 0.18 to 0.34 oz ai/A thifensulfuron + 0.06 to 0.11 oz ai/A tribenuron (4 to 7.5 oz/A Supremacy)
Time Apply after winter wheat is in the 2-leaf stage but before flag leaf emergence.
Remarks Results are best when applied to broadleaf weeds that are actively growing. For best performance, apply when conditions include temperatures of 60°F or higher and adequate soil moisture before, during, and immediately after treatment. Supremacy may be applied with basic blend, NIS + UAN or AMS or MSO + UAN or AMS adjuvants. See Supremacy label for instructions on tank mixing with additional grass and broadleaf herbicides and fungicides.
Caution Do not apply more than 7.5 oz/A in a single application or more than 12.5 oz/A in one growing season.
Site of action (thifensulfuron and tribenuron) Group 2: acetolactate synthase (ALS) inhibitor; (fluroxypyr) Group 4: synthetic auxin
Chemical family (thifensulfuron and tribenuron) sulfonylurea; (fluroxypyr) pyridine
thifensulfuron (several trade names) + another broadleaf herbicide with a different mode of action
Rate 0.014 to 0.028 lb ai/A plus nonionic surfactant
Time After crop is in the 2-leaf stage but before flag leaf is visible.
Remarks Results are best when weeds are young and actively growing. For best performance apply when temperatures are 60°F or higher and soil moisture is adequate before, during, and immediately after treatment. Can be tank mixed with grass herbicides. Include a nonionic surfactant of at least 80% ai at 1 quart/100 gal.
Caution Do not let spray drift to adjacent crop or land. Do not apply during an air temperature inversion. Immediately after spraying, thoroughly clean chemical from mixing and spray equipment with an approved tank cleaner. Do not plant any crop other than wheat, barley, soybeans, field corn, or oats for 45 days after applying.
Site of action Group 2: acetolactate synthase (ALS) inhibitor
Chemical family Sulfonylurea
triasulfuron (Amber)
Rate 0.21 to 0.35 oz ai/A (0.28 to 0.47 oz/A Amber) preemergence or postemergence
Time Apply in fall or spring when crop is between the two-leaf and pre-boot stage. See label for preemergence applications.
Remarks Triasulfuron controls a wide range of broadleaf weeds and inhibits Canada thistle. For best results with postemergence applications, weeds should be actively growing and a surfactant of at least 80% ai should be added at 1 to 2 quarts/100 gal. No grazing restrictions for triasulfuron. Do not apply Amber to wheat that is stressed or when extremes in temperature or rainfall are expected within one week of application.
Caution Triasulfuron can persist in soil. Carefully follow label instructions on crop rotations. Several crops may not be seeded for 24 months or longer after triasulfuron application. See label for cautions on tank-mix or sequential applications with organophosphate insecticides and applications just before rain. Do not apply to snow-covered or frozen soil.
Site of action Group 2: acetolactate synthase (ALS) inhibitor
Chemical family Sulfonylurea