SOYBEAN VARIETIES DESIGNATED AS STS/RR OR STS - POSTEMERGENCE - ALL REGIONS - RATE: 0.375 0Z/ACRE

General Information

Use only in the geographies identified in the “geographical use regions” section of the label.
Dupont SYNCHRONY XP herbicide, referred to below as Dupont SYNCHRONY XP, SYNCHRONY XP herbicide, or SYNCHRONY XP must be used only in accordance with instructions on the label, in separately published Dupont instructions (Supplemental Labels, Special Local Need registrations, FIFRA Section 18 exemptions, FIFRA 2(ee) bulletins), or as otherwise permitted by FIFRA. Always read the entire label, including the Limitation of Warranty and Liability.
Dupont will not be responsible for losses or damages resulting from the use of this product in any manner not specifically directed by Dupont.

PRODUCT INFORMATION

- SYNCHRONY XP herbicide is a dispersible granule formulation which readily dissolves in water.
- SYNCHRONY XP may be used in conventional, no-till, or conservation tillage soybean production.
- SYNCHRONY XP may be used at various rates and by various use methods depending on geographical location in the use regions Northern, central and Southern.
- Residual applications of SYNCHRONY XP require rainfall or sprinkler irrigation to activate the herbicide. Degree of control and duration of effect depend on: rate used, weed spectrum, growing conditions at and following time of treatment, soil ph, texture, organic matter, moisture and precipitation.
- best residual control is obtained if SYNCHRONY XP is applied to moist soil and followed by rainfall or irrigation (~1”) before weeds germinate. Several small rainfalls of less than 1/4” each are not as beneficial as one large rainfall of 1/2-1”. On dry soil, more moisture is required for activation (1-2”) before weed emergence. If moisture is insufficient to activate the herbicide, a rotary hoeing or shallow cultivation should be made after emergence of the crop while weeds are small enough to be controlled by mechanical means. Deep cultivation reduces the effectiveness of Dupont SYNCHRONY XP and should be avoided.

BIOLOGICAL ACTIVITY

SYNCHRONY XP rapidly inhibits the growth of susceptible weeds. Following application of preplant or preemergence treatment, susceptible weeds may germinate and emerge, but growth then ceases and leaves become yellow and/or brown by 3-5 days after emergence. Death of leaf tissue and growing point will follow in some species while others will remain green but stunted and noncompetitive.

SYNCHRONY XP will provide best results when applied postemergence to young, actively growing weeds. Leaves of susceptible plants yellow 3-5 days after application, followed, in controlled plants, by the death of the growing point.

SYNCHRONY XP will provide complete control of susceptible weeds in 7-21 days. Suppressed plants may remain green but will be stunted and noncompetitive. degree of control depends on: weed spectrum; weed size (if weeds are large, use higher spray volume); growing conditions at and following treatment; soil moisture; precipitation; and spray adjuvants.

Treating weeds under stress or large weeds may result in only partial control. Stress may be caused by:
- abnormal weather (hot or cold)
- mechanical injury from cultivation
- drought
- water-saturated soil
- disease
- insect injury
- prior herbicide injury
RESTRICTIONS

- do not graze treated fields or harvest for hay within 14 days after application.
- SYNCHRONY XP can be applied in tank mixtures with organophosate insecticides or at any time preceding or following an application of an organophosphate insecticide on any STS, STS soybean variety or soybeans with BOLT technology. Tank mixtures of SYNCHRONY XP plus organophosphate insecticides applied to STS, STS soybean varieties or soybeans with BOLT technology may result in minor transient crop response (i.e. stunting and/or chlorosis).
- do not apply SYNCHRONY XP within 14 days before or after an application of an organophosphate insecticide on any soybean variety that is not STS, STS or soybeans with BOLT technology, as severe crop injury may occur.
- do not apply more than a total of 0.82 ounces active ingredient chlorimuron ethyl per acre per year in the Northern and central region states or 1.07 ounces active ingredient chlorimuron ethyl per acre per year in the Southern region states.
This includes combinations of preemergence and postemergence applications of chlorimuron ethyl products.
- do not apply more than a total of 0.75 ounces active ingredient of thifensulfuron methyl per acre per year in all use regions specified on the label.
- do not apply this product in a way that will contact workers or other persons, either directly or through drift.
- only protected handlers may be in the area during application.
- do not apply this product through any type of irrigation system.
- do not use liquid nitrogen fertilizer as the total carrier solution.
- do not apply to frozen or snow covered ground.
- do not cultivate within 7 days of application.
- do not tankmix “Poast Plus” with 0.375 oz/acre SYNCHRONY XP unless the soybean is designated as an STS variety or soybeans with BOLT technology.
- do not apply during a temperature inversion, when winds are gusty, or when other conditions could produce poor coverage and/or off-target spray movement.
- do not apply SYNCHRONY XP herbicide by air in the state of New York.
- do not apply SYNCHRONY XP if rain is expected within 1 hour or weed control may decrease.
- Many crops are sensitive to SYNCHRONY XP. Avoid all direct or indirect contact (such as spray drift) with crops other than soybeans.
- Thoroughly clean all application equipment immediately after use and prior to spraying crops other than soybeans. Injury to or loss of desirable trees or vegetation may result from failure to observe the following:
- do not apply SYNCHRONY XP or drain or flush equipment on or near desirable trees or other plants, on areas where their roots may extend, or in locations where the chemical may be washed or moved into contact with their roots.
- do not use on lawns, walks, driveways, tennis courts or similar areas.

PRECAUTIONS

- calibrate sprayers only with clean water away from the well site.
- Make scheduled checks of spray equipment.
- ensure that all operation employees accurately measure pesticides.
- Mix only enough product for the job at hand and avoid overfilling of spray tank.
- When triple-rinsing the pesticide container, be sure to add the rinsate to the spray mix.
- Failure to remove even small amounts of Dupont SYNCHRONY XP from application equipment may result in injury to subsequently sprayed crops.
- Keep from contact with fertilizers, insecticides, fungicides and seeds during storage.
- Avoid storage of pesticides near well sites.
- Stress affects some weeds, such as pigweed, more than others. Delay application until stress passes and weeds start to grow again.
- Severe stress (drought, disease, insect damage, or nutrient deficiency such as iron chlorosis) following application may also result in poor weed control.
- Applications made when the crop is under stress from moisture, cold, heat, high humidity, disease, insect pressure and prior herbicide stress may result in excessive crop response.

WEED RESISTANCE

SYNCHRONY XP, which contains the active ingredients chlorimuron ethyl and thifensulfuron methyl, are both group 2 herbicides based on the mode of action classification system of the Weed Science Society of America. When herbicides with mode of action classifications that affect the same biological sites of action are used repeatedly over several years to control the same weed species in the same treatment area, naturally-occurring resistant biotypes may survive a correctly applied herbicide treatment, propagate, and become dominant in that area. Adequate control of these resistant weed biotypes cannot be expected. If weed control is unsatisfactory, it may be necessary to retreat the problem area using a product affecting a different biological site of action.

To better manage herbicide resistance through delaying the proliferation and possible dominance of herbicide resistant weed biotypes, it may be necessary to change cultural practices within and between crop seasons such as using a combination of tillage, retreatment, tank-mix partners and/or sequential herbicide applications that have a different site of action. Weed escapes that are allowed to go to seed will promote the spread of resistant biotypes. It is advisable to keep accurate records of pesticides applied to individual fields to help obtain information on the spread and dispersal of resistant biotypes. Consult your agricultural dealer, consultant, applicator, and/or appropriate state agricultural extension service representative to determine appropriate actions for treating specific resistant weed biotypes in your area.

INTEGRATED PEST MANAGEMENT

This product may be used as part of an integrated pest Management (IPM) program that can include biological, cultural, and genetic practices aimed at preventing economic pest damage. IPM principles and practices include field scouting or other detection methods, correct target pest identification, population monitoring, and treating when target pest populations reach locally determined action thresholds. Consult your state cooperative extension service, professional consultants or other qualified authorities to determine appropriate action treatment threshold levels for treating specific pest/crop systems in your area.

APPLICATION INFORMATION

Geographic Use Regions

The geographical use regions for SYNCHRONY XP are defined below:

Northern Region: The states of Iowa (fields inside the boundaries of the clarion-Nicollet-Webster and Hamburg-Ida-Monona soil associations and fields located inside the historic floodplain of the Missouri river), Minnesota, Nebraska (fields north of route 30 and west of route 281), New York (fields north of interstate 90), South Dakota, Wisconsin (fields north of interstate 90 between Lacrosse and Madison and fields north of interstate 94 between Madison and Milwaukee) and Hawaii.

Central Region: The states of Delaware, Illinois, Indiana, Iowa (fields located outside the boundaries of the clarion-Nicollet-Webster and Hamburg-Ida-Monona soil associations and fields located outside the historic flood plain of the Missouri river), Kansas, Maryland, Michigan, Missouri (except the Bootheel), Nebraska (fields south of route 30 or east of route 281), New Jersey, New York (fields south of interstate 90), Ohio, Pennsylvania , Virginia, West Virginia and Wisconsin (fields south of interstate 90 between Lacrosse and Madison and fields south of interstate 94 between Madison and Milwaukee).

Southern Region: The states of Alabama (except the “black belt” where soil ph must be less than 7.0), Arkansas, Florida, Georgia, Kentucky, Louisiana, Missouri (Bootheel region only), Mississippi (except the “black belt” where soil ph must be less than 7.0), North Carolina, Oklahoma, South Carolina, Tennessee and Texas (fields east of route 183).

Application Methods

- preemergence, including pre-plant incorporated.
- pre-plant and early pre-plant, including burndown.
- postemergence in-crop
- sequential preemergence followed by postemergence

Timing To Crop Stage

- Dupont SYNCHRONY XP for pre, ppi and burndown uses may be applied any time prior to soybean emergence.
- SYNCHRONY XP, for in-season use on STS soybeans or soybeans with BOLT technology, may be applied any time after emergence but no later than 60 days before soybean maturity.
- SYNCHRONY XP, for in-season use on non-STS soybeans, may be applied any time after the first trifoliate but no later than 60 days before soybean maturity.

Timing To Weeds

Apply SYNCHRONY XP when weeds are young and actively growing. Applications made to weeds larger than the sizes indicated below, or to weeds under stress, may result in unsatisfactory control.

Ground Application (See Also Spray Drift Management)
Broadcast Application
- Postemergence in soybeans, use a minimum of 10 gal water per acre. under heavy weed pressure or dense crop foliage, increase minimum spray volume to 15-25 gal per acre. For best performance, select nozzle and pressure combinations that deliver medium to coarse spray droplets, as indicated, for example, by ASAbe standard S572.
- Preemergence in soybeans, use a minimum of 10 gal water per acre. For best performance, select nozzle and pressure combinations that deliver coarse to very coarse spray droplets, as indicated, for example, by ASAbe standard S572.
- For burndown applications of existing vegetation, use a minimum of 15 gal water per acre. For large weeds and/or heavy residue, increase gallonage to ensure coverage. For best performance, select nozzle and pressure combinations that deliver medium to coarse spray droplets, as indicated, for example, by ASAbe standard S572.

Aerial Application
(See Also Spray Drift Management)
- Use nozzle types and arrangements that will provide optimum spray distribution and maximum coverage at 2-5 gal per acre.
- Use a minimum of 2 gal water per acre. under heavy weed pressure or dense crop foliage, increase the minimum spray volume to 5 gal per acre.
- Do not apply during a temperature inversion, when wind speed is less than 2 mph or above 10 mph, or when other conditions could produce poor coverage and/or off-target spray movement.
* Do not apply SYNCHRONY XP herbicide by air in the state of New York

Limitations, Restrictions, and Exceptions

DUPONT SYNCHRONY XP POSTEMERGENCE - FOR USE ON SOYBEAN VARIETIES DESIGNATED AS STS/RR, STS OR SOYBEANS WITH BOLT TECHNOLOGY: ALL REGIONS

Application of greater than 0.375 oz/acre SYNCHRONY XP to soybean varieties not designated as STS/RR, STS or soybeans with BOLT technology will result in severe crop injury and/or yield loss.
- Dupont will not warrant the safety of this treatment to seed saved from previous year’s production (bin run seed).
- These STS/RR, STS varieties or soybeans with BOLT technology must be purchased from an authorized seed supplier.
- The STS/RR, STS or BOLT technology designation indicates the soybean variety contains a proprietary trait that enhances the soybean’s natural tolerance to dupont soybean sulfonylurea herbicides. information on STS/RR, STS soybean varieties or soybeans with BOLT technology may be obtained from your seed supplier or dupont representative.

APPLICATION RATES
SYNCHRONY XP may be applied postemergence in STS soybeans or soybeans with BOLT technology at 0.375 - 1.125 oz/acre. For rate limitations in certain geographies, see the "rotational crop guidelines" section.

Apply Dupont SYNCHRONY XP at 1.125 oz/acre to preserve the STS trait in STS soybean seed production. SYNCHRONY XP used at 1.125 oz/ac will give residual control of newly germinating broadleaf weeds (see preemergence or preplant Spring Application, preemergence residual control).

Sequential Applications:

A follow up application of Dupont CLASSIC herbicide or SYNCHRONY XPherbicide may be made 2-3 weeks after a SYNCHRONY XP application to control weeds with multiple germination flushes or weeds under stress such as burcucumber, cowpea, giant ragweed, morningglory, and sicklepod. See rotational crop guidelines for intervals following sequential applications.

Restricted Entry Interval

12 hours