General Information

General Information

Laddok S-12 herbicide is intended for the postemergence control of a broad spectrum of broadleaf weeds. Laddok S-12 does not control grasses.

Mode of Action

Laddok S-12 is a non-ALS product that inhibits photosynthesis in broadleaf weeds mainly through contact action.

Crop Tolerance

Corn (field, pop, seed, silage, and sweet) and sorghum (forage and grain) are tolerant to Laddok S-12 at all stages of growth. Leaf speckling may occur, but plants generally outgrow this condition within 10 days. New growth is normal and crop vigor is not reduced. Seed producers should consult the seed company regarding the tolerance of inbred lines of seed population to Laddok S-12.


In irrigated areas, it may be necessary to irrigate before treatment to ensure active weed growth.


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


Do not cultivate within 5 days before or 7 days after applying Laddok S-12. Cultivating 7 days after treatment may help provide season-long control.

Application Instructions

Apply Laddok S-12 at the rates recommended in Table 1 unless instructed differently by Section VII. Crop-Specific Information. Applications can be made to actively growing weeds as aerial, broadcast, band, or spot spray applications at the rates and growth stages listed in Table 1. The most effective control will result from making postemergence applications of Laddok S-12 early, when weeds are small. Delaying application permits weeds to exceed the maximum size stated and will prevent adequate control.

Postemergence application to corn and sorghum must be made before corn and sorghum reach 12 inches in height.

Air Application

Water Volume: Use a minimum of 5 gallons of water per acre and increase water volume to at least 10 gallons of water per acre if grass foliage or crop canopy is dense. AMS can be used provided a minimum of 10 gallons of solution is applied per acre. AMS is not recommended because of the potential precipitation problems in reduced water volumes. Use AMS only if the source has been demonstrated to be successful in local experience.

Spray Pressure: Use up to 40 psi.

Special Directions for Aerial Application

To obtain uniform coverage and to avoid drift hazards, follow these guidelines:

- Do not apply Laddok S-12 by aircraft when wind is blowing more than 10 mph. Use coarse sprays (larger droplets) as they are less likely to drift.

- Do not apply Laddok S-12 by air if ornamental or sensitive nontarget crops such as soybeans, peanuts, cotton, sugar beets, sunflowers, or okra are within 200 feet downwind.

The applicator must follow the most restrictive use cautions to avoid drift hazards, including those found in the labeling as well as applicable state and local regulations and ordinances.

Ground Application (Banding)

Follow Ground Application (Broadcast) instructions for band applications. When applying Laddok S-12 by banding, determine the amount of herbicide and water volume needed using the formula listed in the label.

Ground Application (Broadcast)

Water Volume: Use 10-20 gallons of spray solution per broadcast acre for optimal performance. Increase water volume up to 50 gallons if crop or weed foliage is dense.

Spray Pressure: Use a minimum of 40 psi (measured at the boom, not at the pump or in the line).

Note: When using the lower water volume (i.e., 10 gallons per acre) or when crop and weed foliage is dense, use a minimum of 60 psi for best results.

General Restrictions and Limitations - All Crops

- Maximum seasonal use rate: Do not apply more than a total of 2 pounds of bentazon a.i. from all sources per acre, per calendar year. For postemergence applications, if there has been no previous soil application to that crop, the maximum rate of atrazine from all sources is 2 pounds of active ingredient per acre. If there has been a previous soil application to that crop, do not apply more than a total of 2.5 pounds of atrazine a.i. from all sources per acre, per calendar year.

- Crop Rotation Restriction: Do not plant sugar beets or sunflowers the season following application. Do not plant oats the season following application of Laddok S-12 in soil with a calcareous surface layer.

In the intermountain region of the United States, do not plant any other crop the year following the

application of Laddok S-12 except corn or sorghum.

- Rainfast period: Rainfall or overhead irrigation soon after application may reduce the effectiveness of Laddok S-12.

- Stress: Do not apply to weeds or crops under stress such as stress due to lack of moisture, unseasonable cold weather, hail damage, flooding, herbicide injury, mechanical injury, or widely fluctuating temperatures, or when crop is wet and succulent from recent rainfall as crop injury or unsatisfactory control may result.

- Do not apply to crops that show injury (leaf phytotoxicity or plant stunting) produced by any other prior herbicide applications, because this injury may be enhanced or prolonged.

- Do not mix or apply Laddok S-12 with any other fertilizer except as specifically recommended on the label.

- Do not use selective application equipment such as recirculating sprayers, wiper applicators, or shielded applicators.

- Do not apply this product through any type of irrigation system.

Limitations, Restrictions, and Exceptions

- Do not graze treated area or feed treated forage to livestock for 21 days after application.

Cocklebur: Do not treat earlier than leaf stage shown, and do not count cotyledon leaves.

Lambsquartersb Common, Pigweed Redroot, Smooth: Triazine-resistant biotypes of Amaranthus (pigweeds), common lambsquarters, and common groundsel can be controlled with Laddok S-12 herbicide.

Velvetleaf: Adding UAN or AMS will control velvetleaf at the 8-leaf stage or 8 inch maximum height using 1. 67 pints per acre, or at the 10-leaf stage or 10-inch maximum height using 2.33 pints per acre.

Refer to weeds control table in the label for specific leaf stage and maximum height of weeds.

Restricted Entry Interval

48 hours