Annual Broadleaf Weeds

2,4-D (several trade names)

Rate 0.24 to 0.94 lb ae/a

Time Apply after plants are fully tillered but before stems begin to joint.

Remarks Maximum use rates vary by individual 2,4-D label and formulation. Also, labels vary slightly on use rates and application timing. Check label to ensure proper rate and application timing. Do not apply before the tiller stage, nor during early boot through milk stage. Be aware that 2,4-D may be formulated with 3.74, 3.8, 5, 5.5, 5.6, and 6 lb ae/gal; be sure to use the correct amount of herbicide depending on the formulation. Preharvest interval is 14 days. Amine formulations require 6 hours before they are rainfast and LVE formulations require 1 hour. Restricted entry interval (REI) is 12 hours for the low volatile ester (LVE) formulation and 48 hours for the amine formulation.

Caution Do not apply through any type of irrigation system. Do not forage or graze treated grain fields within 2 weeks after treatment. Do not feed treated straw to livestock. Not all 2,4-D is registered for this use. Check the 2,4-D label to determine whether it is registered for use on oats. Do not make more than one application per crop cycle. Check label for maximum amount allowed per crop cycle.

Site of action Group 4: synthetic auxin

Chemical family Phenoxy acetic acid

bromoxynil (several trade names)

Rate 0.25 to 0.5 lb ai/a

Time Apply from oat emergence up and prior to the boot stage. Apply to the weeds up to the four-leaf stage, or 2 inches tall, or 1 inch diameter, whichever is first.

Remarks More effective east of the Cascades. Do not graze for 45 days. Be aware that bromoxynil is formulated as 2 lb or 4 lb ai/gal; be sure to use the correct amount of herbicide. Bromoxynil is very compatible with many other broadleaf herbicides. Do not apply when crops are under moisture stress or when crop canopy covers the weeds as poor weed control will result. Control is more consistent with tank mixtures. May use 0.5 lb ai/a with chemigation. Do not plant rotational crops within 30 days following herbicide application. Restricted entry interval (REI) is 24 hours.

Caution Do not graze for 45 days after application.

Site of action Group 6: photosystem II inhibitor

Chemical family Nitrile

bromoxynil + MCPA (several trade names)

Rate 0.5 to 1 lb ae/a

Time Apply to fall and spring oats from the 3-leaf to boot stage. Application timing to weeds depends on weed species, but generally up to the 4 leaf stage or 3 inches tall, whichever comes first. If weed forms rosette, apply before weeds exceed 2 inches in diameter. Most effective when applied to weeds up to 2 inches tall or in diameter.

Remarks Be aware that bromoxynil + MCPA is formulated as 4 lb and 5 lb ae/gal; be sure to use the correct amount of herbicide. Use higher rate for larger or more resistant weeds. Controls some large broadleaf weeds, but consistency declines. Be aware that bromoxynil + MCPA is formulated as both 4 lb and 5 lb ai/gal; be sure to use the correct amount of herbicide. Do not apply when crop is under moisture stress or when crop canopy covers the weeds as poor weed control will result. Runoff of this product will be reduced by avoiding applications when rainfall is forecasted to occur within 48 hours. Restricted entry interval (REI) is 24 hours.

Caution Do not permit mixture to drift off target. Do not graze treated fields for 45 days after application.

Site of action (bromoxynil) Group 6: photosystem II inhibitor; (MCPA) Group 4: synthetic auxin

Chemical family (bromoxynil) Nitrile; (MCPA) Phenoxy acetic acid

carfentrazone (Aim)

Rate 0.008 to 0.031 lb ai/a (0.5 to 2 fl oz/a Aim 2EC)

Time Apply from prior to planting to the jointing stage of oat growth. For best performance, apply to actively growing weeds up to 4 inches tall or 3 inches across. May be applied as a preplant burndown up to 1 day before seeding. May also be used for preharvest burndown.

Remarks Include a nonionic surfactant (NIS) at 0.25% v/v (2 pints/100 gal spray solution). A high-quality sprayable liquid nitrogen fertilizer may be used at 2% to 4% v/v or ammonium sulfate (AMS) at 2 to 4 lb/a in addition to the NIS. Coverage is essential for good control. Aim may be tank mixed with other broadleaf herbicides. To avoid significant crop response, do not apply within 6 to 8 hours of rain or irrigation or if heavy dew is present. Consult label for more information. Restricted entry interval (REI) is 12 hours.

Caution Do not exceed 2 fl oz/a per year. Tank-mixes with EC or ester formulations of other herbicides may increase leaf speckling. Do not use Aim with crop oil concentrate (COC), methylated seed oil (MSO), or silicone-based adjuvants. Do not make applications to foliage wet from dew, rain, or irrigation. Increased crop injury may occur. Do not harvest for forage within 7 days after application.

Site of action Group 14: protoporphyrinogen oxidase inhibitor

Chemical family Triazolone

chlorsulfuron (Glean) + another broadleaf herbicide with a different mode of action

Spring oats only east of the Cascades; spring and winter oats west of the Cascades

Rate 0.130 to 0.261 oz ai/a (0.17 to 0.33 oz/a Glean 75DF)

Time Apply postemergence after spring oats have two to three leaves and before the boot stage. Apply before weeds are 2 inches tall or wide.

Remarks Chlorsulfuron controls a wide range of broadleaf annuals and inhibits Canada thistle. It will not control nightshades. For best results, add a nonionic surfactant (NIS) of at least 80% ai at 0.25 to 0.5% v/v (1 to 2 quarts/100 gal spray solution), unless otherwise specified, and apply to actively growing weeds. Tank-mixes are possible for specific weed problems; see label recommendations. Restricted entry interval (REI) is 4 hours.

Caution Do not use on soils above pH 7.9. See label for other pH restrictions. Chlorsulfuron can persist in soil. Carefully follow label instructions on crop rotations. Many crops may not be planted for 24 months or longer after applying. See label cautions on tank-mix or sequential applications with organophosphate insecticides, and applications just before or during adverse conditions such as cold or freezing weather. Do not harvest grain sooner than 45 days after application. Do not apply this product through any irrigation system.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Sulfonylurea

clopyralid (Stinger)

Rate 0.094 to 0.125 lb ae/a (0.25 to 0.33 pints/a Stinger3SC)

Time Apply from three-leaf up to early boot stage of growth. Apply to actively growing weeds. Only weeds emerged at the time of application will be affected.

Remarks Wheat, barley, oats, grasses, field corn, or sugar beets may be planted at any time after treatment. Restricted entry interval (REI) is 12 hours.

Caution Do not apply if the oat crop is underseeded with a legume. Do not harvest for hay. Do not plant alfalfa, asparagus, mint or onions within 10.5 months after application. Do not plant dry beans, lentils, peas, potatoes (including potatoes grown for seed), and broadleaf crops grown for seed, excluding Brassica species for 18 months after application. Consult label for additional crop rotation restrictions related to annual precipitation. Do not exceed a total of 0.33 pints/a per year. Do not apply by air during an air temperature inversion. Do not allow lactating dairy or meat animals to graze for 1 week after application. Do not harvest hay from treated grain fields. Do not apply through any type of irrigation system.

Site of action Group 4: synthetic auxin

Chemical family Pyridine

clopyralid + fluroxypyr (WideMatch or Colt AS)

Rate 0.094 to 0.125 ae/a clopyralid + 0.094 to 0.125 ae/a fluroxypyr (1 to 1.33 pints/a WideMatch or Colt AS 1.5SC)

Time Apply to actively growing oats from the 3-leaf crop growth stage up to and including flag leaf emergence. Apply when weeds are actively growing, but before weeds are 4 inches tall or vining. For volunteer potato suppression, apply before potato plants are 6 inches tall.

Remarks This combination will control a number of weed species. It is particularly effective on Canada thistle, mayweed chamomile, catchweed bedstraw, wild buckwheat, common groundsel, kochia, Russian thistle, nightshade species, and volunteer beans, lentils, peas, and potatoes. Frost 3 days before or after application may reduce weed control and crop tolerance. Restricted entry interval (REI) is 12 hours.

Caution Do not apply if the oat crop is underseeded with a legume. WideMatch and Colt AS residues in treated plant tissues that have not completely decayed may affect succeeding susceptible crops. Do not rotate to canola, cole crops (including Brassica species grown for seed), flax or sugar beets within 120 days after application. Do not rotate to alfalfa, asparagus, dry beans, mint, or onions for 12 months after application. Do not rotate to broadleaf crops grown for seed (excluding Brassica species), chickpeas, lentils, peas, or potatoes (including potatoes grown for seed) for at least 18 months after treatment. Carefully follow label rotation restrictions with other crops. Do not apply this product through any type of irrigation system. Do not allow livestock to graze treated areas or harvest treated forage within 7 days of application.

Site of action (both) Group 4: synthetic auxin

Chemical family (clopyralid) Pyridine; (2,4-D) Phenoxy acetic acid

dicamba (Banvel, Clarity, or others)

Rate 0.06 to 0.125 lb ae/a (2 to 4 fl oz/a Clarity or Banvel 4SC)

Time Winter oats: after spring growth starts but prior to the jointing stage. Spring oats: before they exceed the five-leaf stage.

Remarks Do not use east of the Cascades. Do not apply after oats begin to joint. May be tank mixed with MCPA amine or ester. Do not tank-mix with 2,4-D. Rainfall or irrigation occurring within 4 hours after postemergence application may reduce results. Restricted entry interval (REI) is 24 hours.

Caution Do not permit dicamba to drift off target. To avoid injuring desirable crops, do not apply dicamba in the vicinity of sensitive species or if air temperature is expected to exceed 85°F. Do not apply this product through any type of irrigation system. Do not harvest within 7 days after application. Do not feed to dairy stock before crop matures. Do not graze or harvest for dairy feed before crop matures. Do not apply this product through any irrigation system. Do not allow livestock to graze treated areas or harvest treated forage within 7 days of application.

Site of action Group 4: synthetic auxin

Chemical family Benzoic acid

florasulam + MCPA ester (Orion)

Rate 0.044 lb ai/a florasulam + 0.310 lb ae/a MCPA (17 fl oz/a Orion 2.373EC)

Time Apply from 3-leaf oat growth stage up to jointing stage. Apply when weeds are actively growing. A later application, when crop is between jointing and boot stages, may control weeds emerging later; however, do not apply unless the risk of injury is acceptable. Do not apply after the boot stage.

Remarks An adjuvant may be added to optimize herbicidal activity under suboptimal conditions. If foliage is wet at the time of application, control may be reduced. Do not apply more than 17 fl oz Orion/a per growing season. Livestock may be grazed on treated crops 7 days following application. Do not apply within 60 days of oat harvest. Orion is rainfast within 4 hours after application. Restricted entry interval (REI) is 12 hours.

Caution Do not let Orion drift off target. Do not apply this product through any type of irrigation system. Do not plant any type of corn for 3 months after application. Do not plant alfalfa, canola, chickpea, soybean, dry bean, pea (dry and succulent), flax, lentil, potato, safflower, sugar beet, or sunflower for 9 months after application. Do not apply this product through any irrigation system. Do not apply within 60 days of wheat harvest

Site of action (florasulam) Group 2: acetolactate synthase (ALS) inhibitor; (MCPA) Group 4: synthetic auxin

Chemical family (florasulam) Triazolopyrimidine; (MCPA) Phenoxy acetic acid

fluroxypyr (Starane Ultra, Comet)

Rate 0.105 to 0.25 lb ae/a (0.3 to 0.7 pints/a Starane Ultra 2.8EC and 0.5 to 1.33 pints/a Starane or Comet 1.5 EC)

Time Apply to actively growing oats from two-leaf growth stage up to and including flag leaf emergence.

Remarks May be tank mixed with other broadleaf weed herbicides registered for use in oats. Follow the most restrictive label statement of the tank-mix products used. Use the 1.33 pints/a rate for volunteer potato control. Applications are rainfast after 1 hour. Optimum temperature range for herbicidal activity is 55°F to 75°F. Frost up to 3 days before, or 3 days after, may reduce weed control and crop tolerance. Do not use this product in combination with fungicides containing strobilurin chemistry. Restricted entry interval (REI) is 24 hours.

Caution Do not apply this product through any type of irrigation system. Do not use if oats are underseeded with a legume. Do not plant any crop other than wheat, barley, or oats for 120 days after application. Do not graze livestock on treated areas, or harvest treated forage within 7 days of application. Do not apply within 14 days before cutting for hay, or 40 days before harvesting grain or straw.

Site of action Group 4: synthetic auxin

Chemical family Pyridine

fluroxypyr + bromoxynil (Starane NXT)

Rate 0.25 to 0.5 lb ai/a bromoxynil + 0.06 to 0.125 lb ai/a fluroxypyr (14 to 27.4 oz/a Starane NXT 2.91EC)

Time Apply to oat from three-leaf stage through flag leaf emergence. Apply to weeds up to 4 or 8 inches tall, depending on rate.

Remarks Any crop may be planted 120 days after application. Applications are rainfast within 1 hour after application. Restricted entry interval (REI) is 24 hours.

Caution Do not apply to crops underseeded with legumes.

Site of action (bromoxynil) Group 6: photosystem II inhibitor; (fluroxypyr) Group 4: synthetic auxin

Chemical family (bromoxynil) Nitrile; (fluroxypyr) Pyridine

fluroxypyr + florasulam (Starane Flex)

Rate 0.878 lb ae/a fluroxypyr + 0.0044 lb ai/a florasulam (13.5 fl oz/a Starane Flex 0.875 EC)

Time Apply to actively growing wheat from the three-leaf growth stage up to flag leaf emergence. Apply when susceptible weeds are less than 4 inches tall and are actively growing.

Remarks Only weeds emerged at time of application will be controlled. Weeds hardened off by cold weather or drought stress may not be adequately controlled or suppressed, and re-growth may occur. Generally, this product does not require the use of an adjuvant to achieve satisfactory weed control. An adjuvant may be added when applications are made under conditions of cool temperature, low relative humidity or drought, or when a tank-mix partner recommends the use of an adjuvant. Livestock may be grazed on treated crops 7 days after application. Applications are rainfast within 4 hours after application. Restricted entry interval (REI) is 24 hours.

Caution Do not apply more than 27.4 fl oz of Starane NXT per season. Do not apply to crops underseeded with legumes. Do not apply this product through any type of irrigation system. Do not apply within 60 days of harvest. Extreme growing conditions such as drought or near freezing temperatures prior to, at, or following time of application may reduce weed control and increase the risk of crop injury at all stages of growth.

Site of action Group 4: synthetic auxin and Group 2: acetolactate synthase (ALS) inhibitor

Chemical family (fluroxypyr) Pyrimidine, (florasulam) Triazolopyrimidine

fluroxypyr + thifensulfuron-methyl (Sentrallas)

Rate 1.12 to 1.44 oz ae/a fluroxypyr + 0.22 to 0.28 oz ai/a thifensulfuron-methyl (7 to 9 fl oz/a (Sentrallas 24.9% OD)

Time Apply to actively growing spring oats after the crop is in the 3-leaf stage, but before jointing. Annual broadleaf weeds must be past the cotyledon stage and active growing.

Remarks Risk of injury is greatest when crop is in the 2 to 5 leaf stage. Tank mix compatibility with many commonly used broadleaf and grass herbicides, fungicides, insecticides, liquid fertilizers, and spray adjuvants (see current product label for specific restrictions, precautions, and details). For best results, apply to young, actively growing weeds that are less than 4 inches in height or diameter. Thorough coverage of target weeds is essential. Rain-fast 1 hour after application. Restricted entry interval (REI) is 24 hours.

Caution Do not use on "Ogle", "Porter" or "Premier" varieties as crop injury may occur. Do not make more than one application per cropping season, and do not exceed 9 fl oz/A. Do not apply through any type of irrigation system, to crops underseeded to legumes or grasses as injury to forage may result, and tank mix with Malathion because crop injury may result. Do not graze or harvest treated forage within 7 days of application, and do not harvest hay within 30 days of application or grain within 45 days of application. Do not apply to wheat that is stressed by severe weather conditions, drought, low fertility, water saturated soil, disease, or insect damage, as crop injury may result.

Site of action Group 4: synthetic auxins (fluroxypyr) Group 2: acetolactate synthase (ALS) inhibitor

Chemical family (fluroxypyr) Pyridine carboxylic acid; (thifensulfuron-methyl) Sulfonylurea

MCPA (MCPA Amine or MCPA Ester)

Rate 0.25 to 0.75 lb ae/a for MCPA amine and 0.23 to 0.46 lb ae/a for MCPA ester

Time Apply to actively growing weeds when oats have three to five leaves, or up to early boot stage.

Remarks Individual MCPA labels may vary slightly on use rates, application timing, and grazing interval. This is particularly true with the amine, sodium salt and ester formulations. Check label to ensure proper rate and application timing. If underseeded with legumes, MCPA amine use rate is 0.125 to 0.25 lb ae/A. Do not apply more than 0.75 lb ae/a per year. Restricted entry interval (REI) is 12 hours for the MCPA ester formulation and 48 hours for the MCPA amine formulation.

Caution Grazing interval varies with specific product label. Do not allow MCPA to drift off target. Do not apply more than 0.75 lb ae/a per year. Do not apply this product through any type of irrigation system. Do not forage or graze meat animals on treated areas within 7 days of slaughter. Do not forage or graze dairy animals on treated areas within 7 days after treatment.

Site of action Group 4: synthetic auxin

Chemical family Phenoxy acetic acid

MCPA + fluroxypyr + clopyralid (Hat Trick)

Rate 0.34 to 0.45 lb ae/a MCPA + 0.096 to 0.128 lb ae/a fluroxypyr + 0.096 to 0.128 lb ae/a clopyralid (1.5 to 2 pints/a Hat Trick 2.82EC)

Time Apply this product until oat flag leaf emergence, and to actively growing weeds. For best results, refer to label for application timing based on weed species.

Remarks If foliage is wet at the time of application, control may be decreased. Extreme growing conditions such as drought or near freezing temperatures prior to, at, or following application may reduce weed control and increase the risk of crop injury at all growth stages. The addition of an adjuvant may optimize herbicidal activity when applications are made at lower use rates/carrier volumes, under conditions of cool temperature, low humidity, or drought, or to small, heavily pubescent kochia. Only weeds that have emerged at time of application will be controlled. This product is rain-fast within 6 hours after application. Restricted entry interval (REI) is 12 hours.

Caution Do not apply if the oat crop is underseeded with a legume. Do not apply this product through any type of irrigation system. Do not allow livestock to graze treated areas or harvest treated forage within 7 days of application. Do not harvest within 40 days of application. Refer to label for specific crop rotation restrictions. Do not apply more than 3.0 pints/a per year.

Site of action Group 4: synthetic auxin

Chemical family (MCPA) Phenoxy acetic acid, (fluroxypyr and clopyralid) Pyridine

MCPA + fluroxypyr + clopyralid (Weld)

Rate 0.22 to 0.44 lb ae/a MCPA + 0.08 to 0.16 lb ae/a fluroxypyr + 0.0625 to 0.125 lb ae/a clopyralid (1 to 2 pints/a Weld 2.89EC)

Time Apply to actively growing oat from the 3 leaf stage up to and including flag leaf emergence. Be sure to apply to actively growing weeds, but before weeds are 4 inches tall or vining. Only weeds that have emerged at the time of application will be controlled. Consult the label for information about specific weeds.

Remarks This product is rainfast within 6 hours after application. For young succulent growth of susceptible weed species less than 4 inches tall, apply 1 to 1.5 pints/A. Best control of kochia is achieved when kochia is a least 1 inch tall and not taller than 4 inches. The addition of an adjuvant may optimize herbicidal activity when applications are made at lower use rates/carrier volumes, under conditions of cool temperature, low humidity, or drought, or to small, heavily pubescent kochia. Extreme growing conditions such as drought or near-freezing temperatures before, during, or after application may reduce weed control and increase crop injury. Rainfast within 6 hours of application. Restricted entry interval (REI) is 12 hours.

Caution Do not apply if the cereal crop is underseeded with a legume. Do not apply this product through any type of irrigation system. Do not allow livestock to graze treated areas or harvest treated forage within 7 days of application. Refer to label for specific crop rotation restrictions. Refer to label for specific crop rotation restrictions.

Site of action Group 4: synthetic auxin

Chemical family MCPA) Phenoxy acetic acid, (fluroxypyr and clopyralid) Pyridine

mesotrione (Callisto)

Rate 0.094 to 0.188 lb ai/a (3 to 6 fl oz/a Callisto 4FL)

Time Apply preemergence (6 fl oz/a) or postemergence (3 fl oz/a).

Remarks Follow the rate recommendations depending on application timing. For postemergence applications, weeds should be less than 5 inches tall. Addition of a crop oil concentrate (COC) at 1% v/v or a nonionic surfactant (NIS) at 0.25% v/v is recommended. Urea ammonium nitrate (UAN) at 2.5% v/v or ammonium sulfate (AMS) at 8.5 lb/100 gal spray solution may be added for improved weed control. Addition of COC or NIS can increase injury potential. Tank mixing other pesticides with Callisto applied postemergence may increase crop injury risk. Avoid adding pesticides with emulsifiable concentrate (EC) formulations. Restricted entry interval (REI) is 12 hours.

Caution Do not apply this product through any type of irrigation system. Do not graze or feed forage from treated areas within 30 days following application. Do not harvest oats within 50 days after application. Do not apply more than once per year.

Site of action Group 27: 4-hydroxyphenylpyruvatedioxygenase (HPPD) inhibitor

Chemical family Triketone

saflufenacil (Sharpen)

Rate 0.022 to 0.045 lb ai/a (1.0 to 2.0 oz/a Sharpen 2.85SC)

Time Apply for burndown or residual control of weeds early preplant to preemergence. Sequential applications may be made as needed prior to oat emergence.

Remarks Residual preemergence applications of Sharpen must be activated by at least 0.5 inch of rainfall or sprinkler irrigation prior to weed seedling emergence. Do not apply more than a maximum cumulative amount of 4.0 oz/a Sharpen per cropping season. An adjuvant system is required for optimum broadleaf burndown activity. This includes methylated seed oil at 1% v/v (1 gal/100 gal spray solution) plus ammonium sulfate (AMS) at 1 to 2% w/v (8.5 to 17 lb/100 gal spray solution) or urea ammonium nitrate (UAN) at 1.25 to 2.5% v/v (1.25 to 2.5 gal/100 gal spray solution). Do not use nonionic surfactant (NIS) as a substitute for methylated seed oil (MSO). Performance will depend on amount of rainfall for activation, soil texture, and broadleaf species population. Rainfast with 1 hour of application. Restricted entry interval (REI) is 12 hours.

Caution Do not apply this product through any type of irrigation system. Do not apply following oat emergence or crop injury will occur. Do not feed or graze for 30 days after application.

Site of action Group 14: protoporphyrinogen oxidase (PPO) inhibitor

Chemical family Pyrimidinedione

thifensulfuron (Harmony SG) + another broadleaf herbicide with a different mode of action

Rate 0.225 to 0.045 oz ai/a (0.45 to 0.6 oz/a Harmony 50SG)

Time Apply after the crop is in the 2-leaf stage of winter oats and 3-leaf stage of spring oats, but before flag leaf is visible.

Remarks Do not make more than one application of Harmony ST per crop season on oats. For best results, add a nonionic surfactant (NIS) of at least 60% ai at 0.5 to 2 quarts/100 gal spray solution. Crop oil concentrate (COC) or modified seed oil (MSO) may be used in place of NIS. Apply at 1% v/v (1 gal/100 gal spray solution). Apply to young, actively growing weeds when temperature is 60°F or higher and soil moisture is adequate before, during, and immediately after treatment. Sequential treatments may be made provided total amount applied to crop does not exceed 1.5 oz/a. Weed control may be reduced if rainfall or snowfall occurs soon after application. Restricted entry interval (REI) is 4 hours.

Caution Do not use on "Ogle", "Porter", or "Premier" varieties because crop injury may occur. Do not apply this product through any type of irrigation system. Do not harvest grain within 45 days after application.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Sulfonylurea

thifensulfuron + tribenuron (2:1 formulations) + another broadleaf herbicide with a different mode of action

Rate 0.149 to 0.2 oz ai/a thifensulfuron + 0.074 to 0.1 oz ai/a tribenuron (0.45 to 0.6 oz/a Harmony Extra 50SG)

Time Apply after the crop is in the three-leaf stage but before jointing.

Remarks This includes Harmony Extra SG, Harmony Extra XP, TNT Broadleaf and other generics. Be aware that these products are formulated differently. Be sure to use the correct amount of herbicide. For best results add a nonionic surfactant (NIS) of at least 80% ai at 1 to 2 quarts/100 gal spray solution. At least 60% ai at 0.06 to 0.50% v/v (½ pt to 4 pints/100 gal of spray solution). In addition to a spray adjuvant, an ammonium nitrogen fertilizer may be used. Apply to young, actively growing weeds when temperature is 60°F or higher and soil moisture is adequate before, during, and immediately after treatment. Weed control may be reduced if rainfall or snowfall occurs soon after application. Restricted entry interval (REI) is 12 hours.

Caution Do not use on "Ogle", "Porter", or "Premier" varieties because crop injury may occur. Do not let this herbicide drift off target. Do not apply this product through any type of irrigation system. Do not plant any crop except wheat or barley for 45 days after application. Sugar beets, winter rape, and canola cannot be planted until 60 days after application. Do not harvest grain within 45 days after application. Do not apply this product through any type of irrigation system.

Site of action (both) Group 2: acetolactate synthase (ALS) inhibitor

Chemical family (both) sulfonylurea

thifensulfuron + tribenuron (1:1 formulations, Affinity BroadSpec and Edition BroadSpec) + another broadleaf herbicide with a different mode of action

Rate 0.1 oz ai/a thifensulfuron + 0.1 oz ai/a tribenuron (0.4 oz/a Affinity BroadSpec 50SG)

Time Apply after the crop is in the three-leaf stage but before jointing.

Remarks Affinity BroadSpec and Edition BroadSpec are 1:1 formulations of thifensulfuron and tribenuron. For best results add a nonionic surfactant (NIS) of at least 80% ai at 0.0625 to 0.5% v/v (0.25 to 2 quarts/100 gal spray solution. Apply to young, actively growing weeds when temperature is 60°F or higher and soil moisture is adequate before, during, and immediately after treatment. When applying 0.4 to 0.6 oz/a, Affinity BroadSpec must be used in combination with other registered broadleaf herbicides. Restricted entry interval (REI) is 12 hours.

Caution Do not use on "Ogle", "Porter", or "Premier" varieties because crop injury may occur. Do not let this herbicide drift off target. Do not apply this product through any type of irrigation system. Do not plant any crop except wheat or barley for 45 days after application. Sugar beets, winter rape, and canola cannot be planted until 60 days after application. Do not harvest grain within 45 days after application.

Site of action (both) Group 2: acetolactate synthase (ALS) inhibitor

Chemical family (both) sulfonylurea

thifensulfuron + tribenuron (4:1 formulations, Affinity TankMix and Edition TankMix) + another broadleaf herbicide with a different mode of action

Rate 0.3 to 0.025 lb ai/a thifensulfuron + 0.075 to 0.0063 lb ai/a tribenuron (0.6 to 0.75 oz/a Affinity TankMix 50SG)

Time Apply after the crop is in the three-leaf stage but before jointing.

Remarks Affinity TankMix and Edition TankMix are 4:1 formulations of thifensulfuron and tribenuron. Apply after the crop is in the 3-leaf stage but before jointing and when weeds are young, actively growing, when air temperature is 60°F or higher and soil moisture is adequate before, during, and immediately after treatment. For best results add a nonionic surfactant (NIS) of at least 60% ai at 1 to 2 quarts/100 gal spray solution or crop oil concentrate (COC) or methylated seed oil (MSO) at 1% v/v or 2% v/v (1 to 2 gal/100 gal spray solution) under arid conditions. Sequential treatments may be made provided that the total amount applied to the crop does not exceed 1.8 oz/a per year. Weed control may be reduced if rainfall or snowfall occurs soon after application. Restricted entry interval (REI) is 12 hours.

Caution Do not use on "Ogle", "Porter", or "Premier" varieties because crop injury may occur. Do not apply this product through any type of irrigation system. Do not let this herbicide drift off target. Do not harvest grain within 45 days after application.

Site of action (both) Group 2: acetolactate synthase (ALS) inhibitor

Chemical family (both) Sulfonylurea

tribenuron (Express SG) + another broadleaf herbicide with a different mode of action

Rate 0.0078 ai/a (0.2 oz/a Express 50SG)

Time Apply after oat is in three-leaf stage but before flag leaf is visible.

Remarks Results are best when weeds are young and actively growing, temperature is 60°F or higher, and soil moisture is adequate before, during, and immediately after treatment. Controls only weeds that have emerged; therefore, apply when all or most of the weed have emerged. Can be tank mixed with 2, 4-D, MCP, Bromoxynil and others. See label for full list. Include a surfactant at 0.06 to 0.5% v/v (0.5 to 4 pints/ 100 gal spray solution) with at least 60% nonionic surfactant (NIS). Crop oil concentrate (COC) or modified seed oil (MSO) may be used at 1% v/v (1 gal/100 gal spray solution) or under arid conditions use 2% v/v (2 gal/100 gal spray solution). See most recent grass herbicide label for tank-mix restrictions. Restricted entry interval (REI) is 12 hours.

Caution Do not use on "Ogle", "Porter", or "Premier" varieties because crop injury may occur. Do not apply this product through any type of irrigation system. Do not let spray drift to adjacent crops or land. Do not apply during an air temperature inversion. Thoroughly clean mixing and spraying equipment immediately after spraying. Wheat and barley may be planted any time after application. Oats may be replanted 1 day later in soils with pH <7.9. If pH is >7.9, wait 7 days. Do not apply to oats underseeded with another crop. Do not harvest grain within 45 days after application.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Sulfonylurea