General Information


Charger Max ATZ is a selective herbicide for use before planting, or before or after crop emergence (see specific directions) for control of most annual grasses and broadleaf weeds in corn. Charger Max ATZ can also be used before crop emergence for control of most annual grasses and broadleaf weeds in grain or forage sorghum, provided the sorghum seed has been properly treated with Concep Charger Max ATZ may also be tank mixed with other herbicides as specified on the label for weed control in conventional, minimum till, and no till corn, grain sorghum, or forage sorghum. Observe all precautions and limitations on the labels of each product used in tank mixtures. Tank mixtures are permitted only in those States where the tank mix partner is registered. Refer to and follow the most restrictive label directions for all tank mix products used.

When tank mixing or sequentially applying Atrazine or any product containing atrazine to corn or sorghum, do not exceed a total rate of 2 lb of atrazine active ingredient per acre in any one application, and do not exceed a total rate of 2.5 lb. atrazine active ingredient per acre in any one year.

Following many years of continuous use of atrazine (one of the active ingredients in Charger Max ATZ) or products chemically related to atrazine, biotypes of some weeds listed on the label which are controlled by the atrazine component have been reported to develop resistance to this and chemically related herbicides. Where this is known or suspected, and weeds controlled by this product are expected to be present along with resistant biotypes, use Charger Max ATZ in combination or in sequence with registered herbicides which do not contain triazines. Consult your State Agricultural Extension Service for specific recommendations.

Precautions: If sorghum seed is not properly treated with Concep, Charger Max ATZ will severely injure the crop. Injury may occur to sorghum following the use of Charger Max ATZ under abnormally high soil moisture conditions during early development of the crop.

Charger Max ATZ alone or in tank mixture with atrazine, simazine, Balance, or Charger Max may be applied early preplant, preplant surface, preplant incorporated, or preemergence on corn in water or fluid fertilizer. Apply postemergence treatments of Charger Max ATZ to corn, alone or in combination, using only water as the carrier.

Charger Max ATZ may be applied in tank mix combination with paraquat (e.g. Gramoxone MAX), Cornerstone (glyphosate), or Landmaster BW preplant surface or pre-emergence to corn. Charger Max ATZ may also be applied on sorghum early preplant, preplant incorporated, preplant surface, or pre-emergence in water or in fluid fertilizer.

Charger Max ATZ may be applied by aircraft in water only. Do not dilute in fluid fertilizer for aerial application.

To avoid drift, do not apply under windy conditions. Avoid spray overlap, as crop injury might result.

Do not apply through any type of irrigation system.

Do not apply under conditions which favor runoff or wind erosion of soil containing this product to nontarget areas.

To prevent off site movement due to runoff or wind erosion:

- Avoid treating powdery dry or light sand soils when conditions are favorable for wind erosion. Under these conditions, the soil surface should first be settled by rainfall or irrigation.

- Do not apply to impervious substrates such as paved or highly compacted surfaces.

- Do not use tailwater from first flood or furrow irrigation of treated fields to treat nontarget crops unless at least 1/2 inch of rainfall has occurred between application and first irrigation.

Where reference is made to weeds partially controlled, partial control can mean either erratic control from good to poor, or consistent control at a level below that generally considered to be acceptable for commercial weed control.

Dry weather following pre-emergence application of Charger Max ATZ alone or in tank mixture may reduce effectiveness. Cultivate if weeds develop in conventional tillage corn or sorghum.

Thoroughly clean sprayer or other application device before using. Dispose of cleaning solution in a responsible manner. Do not use a sprayer or applicator contaminated with other materials or crop damage or clogging of the application device might occur.


Within rate ranges in the rate tables and elsewhere in the label, use the lower rate on soils that are relatively coarse textured or low in organic matter. Use the higher rate on soils that are relatively fine textured, or high in organic matter.

Charger Max ATZ may be applied pre-emergence alone or in tank mixtures as specified in the label following pre-plant incorporated herbicides used according to their label directions, provided such use is not prohibited by those labels.


Control of escaped weeds with cultivation or an application of an appropriate EPA registered post-emergence herbicide. On fine-textured soils, only partial control can be expected.

1. In corn, apply up to the maximum single application rate in Table 1 for your given soil texture and rate limitations based on your soil conservation practices.

2. Thoroughly till moist soil to destroy germinating and emerged weeds. If Charger Max ATZ is to be applied pre-plant incorporated, this tillage may be used to incorporate Charger Max ATZ if uniform 2 inch incorporation is achieved as recommended under Application Procedures.

3. Plant crop into moist soil immediately after tillage. If Charger Max ATZ is used pre-emergence, apply at planting or immediately after planting.

4. If available, sprinkler irrigate within 2 days after application Apply 1/2 to 1 inch of water. Use the lower water volume on coarse textured soils, and the higher water volume on fine-textured soils.

5. If irrigation is not possible, and rain does not occur within 2 days after planting and application, weed control may be decreased. Under these conditions, a uniform shallow cultivation as soon as weeds emerge is recommended.


For all soil applications prior to crop emergence:

On highly erodable land (as defined by the Natural Resources Conservation Service)

If conservation tillage is practiced, leave at least 30% of the soil surface covered with plant residue, at planting, and apply a maximum of 2.6 quarts per acre as a broadcast spray. Refer to “B” in the following tables.

If the soil covered with plant residue is less than 30% at planting, a maximum of 2.1 quarts per acre may be applied. Refer to “A” in following tables.

On land not defined as highly erodable

Apply a maximum of 2.6 quarts per acre as a broadcast spray. Refer to “B” in following tables.

For post-emergence application to corn:

If no atrazine was applied prior to corn emergence, apply a maximum of 2.6 quarts per acre broadcast. If a post-emergence treatment is required following an earlier herbicide application,, the total atrazine applied may not exceed 2.5 lb active ingredient per acre per calendar year (equivalent to 2.3 quarts per acre of Charger Max ATZ.)

Where there are state and/ or local requirements regarding atrazine use, including lower maximum rates and/ or greater setbacks, which are different from the label, the more restrictive / protective requirements must be followed. Certain states may have established rate limitations within specific geographic areas. Consult your state lead pesticide control agency for additional information. It is a violation of the label to deviate from state use regulations.

(For purposes of calculating total atrazine applied due to use of this product and / or other atrazine products, Charger Max ATZ contains 3.1 lb per gal. (0.775 lb per quart) of atrazine and related compounds.)

Refer in the label for tank mix information.

Limitations, Restrictions, and Exceptions

Early Preplant, Corn:

On medium and fine soils in minimum-tillage or no-tillage systems only in CO IA, IL, IN, KS, KY, MN, MO, MT, ND, NE, SD, TN, WI, AND WY, apply Charger Max ATZ at the rates specified in the table below. Use only split applications for treatments made 30 to 45 days before planting, with 2/3 the recommended rate for the crop and soil texture applied initially, and the remaining 1/3 at planting. Treatments made less than 30 days before planting may be made either as a split or single application. Use the lower rate for light expected weed infestations, and the higher rate for heavy expected infestations. On coarse-textured soils, apply 2.1 quarts per acre no more than 2 weeks before planting. The treatments above may be made in tank mixture with Atrazine, Dual Magnum, Charger Max, or Simazine. Tank mixtures with Balance may be applied up to 14 days before planting field corn. For burndown of existing annual weeds listed on the label, up to the 2-leaf stage of growth, substitute liquid fertilizer for some or all of the water used as carrier. A crop oil concentrate such as Prime Oil will enhance burndown.

If larger weeds are present at the time of application, use a tank mixture with a past-emergent herbicide such as paraquat (e.g. Gramoxone MAX) or Cornerstone (glyphosate.) Follow all Directions for Use, precautions, and restrictions on the labeling of the tank mix partner herbicide.

On medium and fine textured soils in minimum tillage or no-till systems in DE, MD, MI, NY, OH, PA, VA and WV, early preplant applications may be made as described above. If the amount of rainfall results in a reduced period of satisfactory weed control, use a post-emergence application of a herbicide registered for this use, such as Atrazine, Beacon, bentazon (e.g. Basagran), 2,4-D, Sterling (dicamba), Moxy (bromoxynil), Exceed, or Marksman. If the post-emergence herbicide includes active ingredients applied in the first application, do not exceed the maximum allowable total rate for corn or the soil texture. Follow all directions for use, precautions and restrictions on the labeling of all tank mix partner products.

Charger Max ATZ may be used as described above to control winter wheat planted as a cover crop in IN, KY, and OH, as well as to provide residual weed control. The wheat must be less than 6 inches tall, and preferably still in a dormant or semi-dormant state, coming out of winter, at the time of application. Depending on rainfall, it may take 10 to 20 days to completely kill the wheat. If rainfall is insufficient, winter wheat might not be adequately controlled. In this case, apply a post-emergent herbicide such as paraquat or Cornerstone (glyphosate) before planting the new crop.

Charger Max ATZ may be applied as a single application in the fall for control of winter weeds listed on the label in no-till areas of NE and KS, where wheat or other small cereal grains will be rotated to corn. Apply to untilled grain stubble in the fall following harvest, and before freeze-up. Do not till after application until after establishment of the corn crop.

To provide grass suppression 2 to 3 weeks after planting in medium and fine-textured soils following final seedbed preparation in the Blacklands and Gulf coast areas of TX, an early pre-plant application of Charger Max ATZ may be made at a rate of 1.6 to 1.9 quarts per acre, 30 to 45 days before planting. Do not incorporate or disturb the soil before planting, and avoid moving the soil during planting. A follow-up application of Charger Max or Dual Magnum may be needed in fields with a history of heavy stands of grass weeds. In this case, apply after planting but before grass weeds emerge. To the extent possible do not move treated soil out of the row or move untreated soil to the surface during planting, or weed control will be reduced.

Restrictions: If a follow-up application of Charger Max or Dual Magnum is required, do not exceed a total application rate, including the preplant application, of 1.6 lb. ai per acre of s-metolachlor on medium or fine-textured soils, or 1.9 lb ai of s-metolachlor on fine-textured soils with more than 3% organic matter.

To determine total lb ai of s-metolachlor, use the following calculation:

a) Preplant Charger Max ATZ: 1.6 quarts per acre = 0.96 lb ai per acre 1.9 quarts per acre = 1.14 lb ai per acre

b) Follow-up with Charger Max or

Follow-up with Dual Magnum Each 1 quart per acre contains 1.91 lb ai per acre Procedure: Follow label instructions for weeds and soil type on the follow-up product label. Multiply the number of quarts per acre of the follow-up herbicide to be used by the number of lb ai per acre (under “b”) , and add this to the lb ai per acre from the lb ai per acre from “a”.

Restricted Entry Interval

24 hours

EXCEPTION: If this product is soil-incorporated or soil-injected, the Worker Protection Standard, under certain circumstances, allows workers to enter the treated area if there will be no contact with anything that has been treated.