WINTER WHEAT - 10.7 - 12.8 acre rate
Clearmax herbicide is intended for the postemergence control of a wide spectrum of broadleaf and grass weeds in CLEARFIELD wheat.
Clearmax is provided in a molded jug pack that contains enough ammonium salt of imazamox and 2-ethylhexyl ester of MCPA to treat between 10.7 and 16 acres.
The mode of weed killing activity involves uptake of Clearmax by foliage and/or weed roots and rapid translocation to the growing points. After Clearmax application, susceptible weeds may show yellowing or epinasty, and weed growth will stop. Susceptible weeds stop growing and either die or are not competitive with the crop. Adequate soil moisture is important for optimum Clearmax activity. When adequate soil moisture is present, Clearmax will provide residual activity of susceptible germinating weeds; activity on established weeds will depend on the weed species and the location of its root system in the soil.
DO NOT tank-mix organophosphate (such as Lorsban) or carbamate insecticides (such as Furadan) with Clearmax on CLEARFIELD* crops unless otherwise specified in writing by BASF. DO NOT apply an organophosphate insecticide within 7 days of the Clearmax application.
Use of Clearmax is expected to result in normal growth of rotational crops in most situations; however, various environmental and agronomic factors make it impossible to eliminate all risks associated with the use of this product and, therefore, rotational crop injury is always possible.
Occasionally, internode shortening and/or temporary yellowing of crop plants may occur following Clearmax applications. These effects can be more pronounced if crops are growing under stressful environmental or hot and humid conditions. These effects occur infrequently and are temporary. Normal growth and appearance should resume within 1-2 weeks.
Replanting: If replanting is necessary in a field previously treated with Clearmax, the field may be replanted to CLEARFIELD Canola, CLEARFIELD Wheat, CLEARFIELD Sunflowers, edible legumes, or soybeans. Rework the soil no deeper than 2 inches. DO NOT apply a second treatment of Clearmax to the replanted crop.
DO NOT apply Beyond, Extreme, Backdraft SL, Scepter 70 DG, Pursuit, Raptor, or Pursuit Plus EC herbicides if soybeans are replanted.
Naturally-occurring biotypes of some of the weeds listed on the label may not be effectively controlled by this and/or other products with either the ALS/AHAS enzyme-inhibiting mode of action. Other herbicides with the ALS/AHAS enzyme-inhibiting mode of action include the sulfonylureas (e.g., Amber, Express, Everest, Finesse, Glean F.C., Peak, Rave, Accent, Ally, Basis, Classic, Exceed, Harmony Extra XP, Maverick, Permit, Olympus, Osprey, Silverado, etc.), imidazolinones (e.g., Extreme, Backdraft SL, Beyond, Pursuit, Scepter 70 DG, Cadre herbicide and Lightning herbicide), the sulfonamides (e.g., Hornet, etc.) and the pyrimidyl benzoates (e.g., Staple, etc.). If naturally-occurring ALS/AHAS-resistant biotypes are present in a field, Clearmax and/or any other ALS/AHAS enzyme-inhibiting mode of action herbicide should be tank-mixed or applied sequentially with an appropriate registered herbicide having a different mode of action to ensure control.
A weed biotype is a naturally-occurring plant within a given species that has a slightly different, but distinct, genetic makeup from other plants.
Clearmax is active against many broadleaf and grass weed species. For long term weed management, use two herbicides with different modes of action (like Clearmax) to reduce the potential for weed resistance. Crop (and herbicide) rotation is also effective in managing weed resistance where herbicides of different modes of action are used. Tillage, where practical (such as in fallow production or prior to planting), is also effective in controlling weeds to minimize resistance development. Additionally, a burndown herbicide during fallow or prior to planting is also effective in reducing weed resistance development.
DO NOT apply when wind conditions may result in drift, when temperature inversion conditions exist, or when spray may be carried to sensitive crops. Sensitive crops include, but are not limited to, leafy vegetables and sugar beet.
Uniformly apply with properly-calibrated ground equipment in 10 or more gallons of water per acre. A spray pressure of 20 to 40 psi is recommended.
To ensure thorough coverage, use a minimum of 20 gallons of water per acre when applying Clearmax to minimum- or no-till crops. Use higher gallonage (>20 GPA) for fields with dense vegetation or heavy crop residues.
Adjust the boom height to ensure proper coverage of weed foliage (according to the manufacturer's recommendation). Use flat-fan nozzle tips or similar appropriate nozzle tips to ensure adequate coverage.
DO NOT overlap when spraying.
GROUND APPLICATIONS WITH A LOW-VOLUME SPRAYER
Clearmax may be applied with a low-volume (Spra-Coupe-type) sprayer. When applying Clearmax with a low-volume sprayer, spray the weeds before they reach the maximum size or tiller number listed in the label. Adequate control of weeds is dependent upon good spray coverage of the weeds. The sprayer must be calibrated to deliver the recommended spray volume and pressure to ensure adequate spray coverage of the weeds.
When applying Clearmax with a low-volume sprayer, apply a minimum of 10 gallons per acre of spray solution with a nozzle pressure between 40-60 psi for optimum coverage.
Clearmax may be applied by air to crops listed on the label. Uniformly apply with properly-calibrated equipment in 5 or more gallons of water per acre. The addition of an adjuvant and nitrogen fertilizer are required for optimum weed control.
Non-uniform applications of Clearmax through aerial equipment may increase CLEARFIELD crop response (stunting, chlorosis), especially when applied to large slopes and hills. All risks associated with non-uniform applications shall be assumed by the user.
Use the entire contents of this container to treat between 10.7 and 16 acres. This is equivalent to 12 to 18 fluid ounces of Clearmax herbicide per acre.
Apply Clearmax as a postemergence treatment when weeds are actively growing and before they exceed the maximum recommended size. Delay application until the majority of the weeds are at the recommended growth stage.
Application timing should be based primarily on CLEARFIELD Wheat growth stage. In general, Clearmax should be applied when weeds are small and actively growing. An adjuvant and a nitrogen fertilizer must be added to the spray solution for optimum weed control activity.
When Clearmax is applied postemergence, absorption will occur through both the roots and foliage. Susceptible weeds stop growing and either die or are not competitive with the crop. Clearmax not only controls many existing broadleaf and grass weeds when applied postemergence, it also provides control or suppression on susceptible broadleaf weeds that may emerge shortly after application.
Weeds are controlled when actively growing. Under conditions of cold temperatures (less than 40° F, maximum daytime temperatures), weed control may be reduced.
Clearmax should be applied a minimum of one hour before rainfall or overhead irrigation.
CLEARFIELD WHEAT - DIRECTIONS FOR USE
Clearmax can be applied postemergence on CLEARFIELD Wheat (imidazolinone tolerant wheat) varieties. Apply only on wheat varieties labeled as CLEARFIELD and warranted by the seed supplier to possess tolerance to direct application of Clearmax. DO NOT apply Clearmax to wheat varieties which lack resistance/tolerance to imidazolinone herbicides. Contact your seed supplier, chemical dealer or BASF to obtain information regarding CLEARFIELD Wheat varieties.
Apply Clearmax as an early postemergence treatment when weeds are actively growing and before broadleaf weeds exceed a height of 3 inches and grasses exceed 4-5 leaves (unless otherwise indicated). Under conditions of cold temperatures (less than 40° F, maximum daytime temperatures), weed control may be less than optimal. A thin stand of wheat may result in unacceptable weed control. Clearmax is effective in controlling weeds in conservation tillage and conventional tillage wheat production systems.
Delay application until the majority of the weeds are at the recommended growth stage. When a mixture of grasses and broadleaf weeds are present, time the application to the grass weeds for optimum control.
When adequate soil moisture is present, Clearmax will provide residual activity of susceptible germinating broadleaf weeds.
Occasionally, reduction in plant height or temporary yellowing of crop plants may occur following Clearmax applications.
These effects can be more pronounced in spray overlap areas and/or if crops are growing under stressful environmental conditions (such as, but not limited to, drought, excessive moisture, improper fertility, improper varietal adaptation, poor planting conditions, etc.). To avoid possible crop injury, DO NOT apply Clearmax to CLEARFIELD wheat when extreme cold temperatures (less than 40° F, maximum daytime temperatures) are expected within one week of application. Crop response associated with stress conditions and overlaps shall be the responsibility of the user.
Weed control is optimized when Clearmax is applied to actively-growing wheat. Plant a locally adapted CLEARFIELD variety at the normal seeding rate for your geography.
Apply to wheat after tiller initiation has begun and prior to the jointing stage of growth (and when the weeds are at the appropriate size).
Restrictions and Limitations
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.
Applying Clearmax to weeds that have been grazed may result in reduced weed control. For optimum weed control, allow a period of 7 days between the end of grazing and Clearmax application to allow weed regrowth. Wait until new growth of weeds is evident before applying Clearmax in fields that have been grazed.
WINTER WHEAT - 10.7 - 12.8 acre rate
A surfactant and nitrogen-based fertilizer must be added to the spray solution for optimum weed control activity.
Application of Clearmax to weeds, which have been grazed, may result in reduced weed control. For optimum weed control, allow a period of 7 days between the end of grazing and Clearmax application for weed regrowth to occur. Under cold conditions, wait until new growth of weeds is evident before applying Clearmax in fields which have been grazed.
Feral Rye (cereal, volunteer rye): Apply to feral rye before the first tiller forms. Once feral rye develops tillers, control is significantly reduced. In winter wheat, if feral rye germinates in the fall, an application of Clearmax in the fall will provide the best control. If feral rye germinates following an application of Clearmax in the fall, a spring application of Clearmax or Beyond herbicide may be necessary for control of subsequent germination flushes. Clearmax only suppresses Feral rye in Montana, Wyoming, North Dakota, South Dakota, Nebraska, Kansas, Colorado, Texas and Oklahoma.
Italian Ryegrass: Clearmax controls emerged Italian ryegrass only. Under favorable growing conditions, ryegrass may germinate over several weeks (especially in the southern US). Clearmax does not provide residual control of Italian ryegrass. Optimum application timing is to ryegrass with 3-4 leaves and before the first tiller. Weed control is reduced when tillers develop. In the Pacific Northwest a spring application of Clearmax is recommended to achieve the most consistent control. In winter wheat, if Italian ryegrass germinates following a fall application, a spring application may be necessary. Apply the higher recommended rate when Italian ryegrass is at the maximum recommended size, or to heavy grass populations.
Kochia (Resistant Biotype): Naturally-occurring ALS/AHAS-resistant biotypes of kochia are common in wheat fields. In many cases, a tank-mixture with Clearmax will be required for acceptable control. If Clearmax is applied in the spring, apply Clearmax in a tank-mixture with a herbicide(s) recommended to control kochia (i.e. bromoxynil). Apply to kochia 2 inches in size or less.
Wild Buckwheat: For enhanced control of wild buckwheat, add Starane or bromoxynil to the tank-mixture. Apply to wild buckwheat with 2 true leaves or less.
Wild Oats: Clearmax controls emerged wild oats only. Under favorable growing conditions, wild oats may germinate over several weeks. Clearmax does not provide residual control of wild oats.
Winter Wheat Only: Clearmax is most effective for grass and broadleaf weed control when applied in the fall. If summer annual broadleaf weeds germinate in the spring (following a fall application of Clearmax), a broadleaf herbicide may need to be applied. If the Clearmax application is made in the spring, the broadleaf herbicide may be tank-mixed with Clearmax. For improved control of grasses such as feral rye, Italian ryegrass, and downy brome, use higher rates of nitrogen fertilizer up to 5% by volume or 15 lbs per 100 gallons of the spray solution. Higher rates of nitrogen fertilizer can improve grass weed control with Clearmax, especially under drought stress conditions.