CORN - MID-POSTEMERGENCE AND LATE-POSTEMERGENCE

General Information

Product Information

Distinct herbicide is a selective postemergence herbicide for the control of annual and biennial broadleaf weeds and control or suppression of many perennial broadleaf weeds in between-crop application, Conservation Reserve Program land, pasture, hay, and rangeland sites.

Distinct provides suppression of annual grass weeds at appropriate rates. Emerged grass up to 3-inches tall will cease growing but may remain green for weeks after application.

Regrowth of grass is limited when crop canopies over row middles.

Distinct may be applied sequentially or tank mixed with a grass herbicide for a complete weed control program; refer to Tank Mixing Information.

Use of this product in certain portions of Oregon and Washington is subject to the January 22, 2004, Order for Injunctive Relief in Washington Toxics Coalition, et. al. v. EP, C01-0132C, (W.D. WA). For further information, please refer to http://www.epa.gov/espp/litstatus/wtc/index.html.

Mode of Action

Distinct is absorbed by leaves, roots, and shoots and is translocated to the growing points of sensitive weeds to provide postemergence control of emerged weeds as well as moderate residual control of germinating weeds.

Distinct controls weeds by auxin transport inhibition and auxin agonist modes of action. In addition, Distinct can complement the activity of other auxin-like herbicides such as clopyralid, picloram, and triclopyr.

Weeds treated with Distinct will typically display symptoms within several hours and be controlled in 3 to 7 days. Control of larger annual, biennial, or perennial weeds may require additional time. Treated weeds will stop growing soon after application. Broadleaf weeds will display epinastic twisting and crinkling symptoms before becoming necrotic.

Crop Tolerance

Labeled crops are generally very tolerant to Distinct application.

Temporary injury may occur under conditions of crop stress or rapid growth. Crop stress can be caused by drought, poor fertility, other pesticides (i.e. other herbicides) or foliar damage because of hail, wind, or insects. Injury can be avoided by agronomic practices that promote good crop growth and minimize stress conditions, especially combinations of stress factors. Crop leaning may occur during periods of rapid growth but is usually temporary and dissipates within 7 days without subsequent yield reduction.

Crops growing under stress conditions such as drought,

poor fertility, or foliar damage because of hail, wind, or insects can exhibit various injury symptoms that may be more pronounced if herbicides are applied.

Coverage

Weeds must be thoroughly covered with spray. Dense leaf canopies shelter smaller weeds and can prevent adequate spray coverage.

Cultivation

Avoid disturbing (e.g. tillage or cultivating) treated areas for at least 7 days following application to allow best herbicide uptake, translocation, and weed control.

Application Instructions

Best product performance is obtained when Distinct herbicide is applied to actively growing weeds. Distinct may be applied as a ground broadcast or spot spray application or as an aerial application (only as directed) at a rate of 4 to 8 ounces per acre plus spray additive (see Spray Additives). To avoid uneven spray coverage, DO NOT apply Distinct during periods of gusty winds or when wind speed exceeds 10 mph.

Weeds treated with Distinct will typically display symptoms within several hours and be controlled in 3 to 7 days. Treated weeds will stop growing soon after application.

Broadleaf weeds will display epinastic twisting and crinkling symptoms before becoming necrotic. Suppressed grass weeds may display some epinasty and remain stunted and green.

Aerial Application Methods and Equipment

Use 2 or more gallons of water per acre. Select nozzles designed to produce a minimal amount of fine spray particles.

The actual minimum spray volume per acre is determined by the spray equipment used. Use adequate spray volume to provide accurate and uniform distribution of spray particles over the treated area and to avoid spray drift.

Make aerial application at the lowest safe height to reduce exposing the spray to evaporation and wind.

Ground Application Methods and Equipment

Distinct, a wettable granule formulation, can be applied using water as the spray carrier.

Water Volume. Select an appropriate spray volume that ensures adequate coverage of the target weed species.

Use higher water volumes when treating dense or tall vegetation.

DO NOT apply less than 3 gallons of spray volume per acre.

Application Equipment. Use ground application equipment that will provide good spray coverage of weed foliage. Exercise preventive measures to avoid drift onto nontarget areas.

Restrictions and Limitations

- Maximum seasonal use rate - Refer to Table 2.

- Agricultural use sites REI - 24 hours

- Rainfast period - Distinct is rainfast 4 hours after application when used with recommended adjuvants according to Spray Additives.

- DO NOT apply to crops showing injury (leaf phytotoxicity or plant stunting) produced by any other prior herbicide application because this injury may be enhanced or prolonged.

- Allow a minimum of 15 days between sequential applications of Distinct.

- Pasture and rangeland grass treated with Distinct can be grazed immediately after application or harvested for livestock feed 7 days after application.

- DO NOT apply through any type of irrigation system.

- DO NOT treat irrigation ditches or water used for crop irrigation or domestic uses.

- Aerial application prohibited unless otherwise directed.

- This product cannot be used to formulate or reformulate any other pesticide product.

Weeds Controlled

Distinct will provide postemergence control of annual and biennial broadleaf weeds and control or suppression of many perennial broadleaf weeds including ALS-resistant1 and triazine-resistant biotypes.

Distinct provides suppression of annual grass weeds at appropriate rates. Emerged grass up to 3-inches tall will cease growing but may remain green for weeks after application. Regrowth of grass is limited when crop canopies over row middles.

1 ALS (acetolactate synthase)-resistant weeds include those weeds resistant to the sulfonylurea, imidazolinone, and/or sulfonamide family of herbicides.

Limitations, Restrictions, and Exceptions

FIELD CORN GROWN FOR GRAIN, SILAGE AND POPCORN:

Before applying Distinct to popcorn, verify the selectivity of Distinct on the popcorn hybrid with your local seed corn company (supplier). This precaution will help avoid potential injury of sensitive lines.

Distinct is not registered for use on sweet corn.

Late-Postemergence (Rescue) Application with Drop Nozzles

Distinct may be applied to corn when using drop nozzles. Do not make applications when corn is within 15 days of tassel emergence. Avoid direct application of spray into the whorl of corn plants or crop injury may occur.

Corn height is measured to the arch of the highest leaf that is more than 50% emerged.

Split Applications

Split applications of Distinct may be made during a growing season. Do not exceed a total of 10 ounces of Distinct per treated acre per crop year. Allow a minimum of 15 days between sequential applications of Distinct.

Field Corn Tank Mixes and Sequential Uses

In addition to control of many broadleaf weed species, Distinct offers herbistatic (suppression) of several annual grasses that may enhance overall control of your grass herbicide program. For commercial control of grasses Distinct should be used either as a sequential postemergence treatment following a pre-emergence grass herbicide (e.g., Outlook herbicide or G-Max Lite herbicide) or in tank mix combination with a postemergence grass herbicide (e.g., Accent or Option herbicides).

Tank Mix Restrictions and Limitations

Distinct may be applied sequentially or in tank mixes with other herbicides registered for use in corn (including herbicides registered for used in corn hybrids tolerant to glyphosate, glufosinate, and imidazolinone) with the following limitations:

- When tank mixing Distinct for use in popcorn, ensure that the tank mix partner is registered for use in popcorn.

- When tank mixing Option, a methylated seed oil (MSO) at the rate of 1.5 pints per acre may be used in place of a nonionic surfactant.

- Postemergence applications of Distinct are not recommended for use in tank mixes with plant growth-regulating herbicides such as those products that contain dicamba, 2,4-D, or clopyralid (e.g. Banvel, Celebrity Plus, Clarity, Marksman, NorthStar, Weedone 64, Shotgun and Hornet herbicides. Additionally, sequential treatments with these products should be separated by at least 15 days.

- Tank mixes with emulsifiable concentrate (EC) formulations of chloroaceteamide grass herbicides (e.g. Dual II Magnum, Harness, Outlook, or Surpass herbicides) are not recommended after corn emergence.

Distinct may be used sequentially with all soil-applied insecticides or used sequentially or in tank mixes with foliar-applied insecticides with the following limitation:

- Distinct is not recommended for use in foliar-applied tank mixes with Lorsban or Ambush EC insecticides. However, sequential treatments with these products may be used if applications are separated by at least 7 days.

South Dakota: This recommendation is for a reduced rate of Distinct herbicide tank mixed with glyphosate in Roundup Ready corn for control of kochia, lambsquarter, waterhemp and wild buckwheat. Apply 3 ounces of Distinct tank mixed with glyphosate to control emerged weeds. Maximum height of weeds for control is 6 inches.

Nebraska: This recommendation is for a reduced rate of Distinct herbicide tank mixed with glyphosate in Roundup Ready corn for control of kochia, velvetleaf, and waterhemp. Apply 3 ounces of Distinct tank mixed with glyphosate. Maximum height of weeds for control is 6 inches.

North Dakota: This recommendation is for a reduced rate of Distinct herbicide tank mixed with glyphosate in Roundup Ready corn for control of lambsquarter, kochia, and wild buckwheat. Apply 3 ounces of Distinct tank mixed with glyphosate. Maximum height of weeds for control is 6 inches.

Minnesota: This recommendation is for a reduced rate of Distinct herbicide tank mixed with glyphosate in Roundup Ready corn for control of lambsquarter, water hemp, and wild buckwheat. Apply 3 ounces of Distinct tank mixed with glyphosate. Maximum height of weeds for control is 6 inches.

Restricted Entry Interval

12 hours