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Sonic®
- Herbicide
group
- 2
- 14
Battle weeds
Sonic® herbicide is proven to deliver long-lasting, broad-spectrum control to prevent weeds from invading soybean fields.
Benefits
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Maximized yield potential
Sonic® herbicide provides preemergence control of tough broadleaf weeds to maximize soybean yield potential.
Multiple modes of action
Containing two modes of action, Sonic effectively manages weed resistance to protect from the toughest yield-robbing weeds.
Extended residual control
Sonic delivers long-lasting residual control when applied in fall, spring or up to three days post-plant before the soybean emerges. It's proven to perform in a variety of soil types.
Convenient
Sonic is a convenient tank-mix partner that is easy to use and handle. It exhibits outstanding crop safety, giving farmers and custom applicators one less thing to worry about.
Proven Efficacy
RESIDUAL CONTROL WITH SONIC®
Evaluations made four weeks after application
Questions about Sonic® herbicide?
Read answers to some of growers’ most commonly asked questions about Sonic® on our Q&A page. Don’t see what you’re looking for? Submit questions of your own.
Learn moreTestimonials
George Richter, Grower — Indiana
Soybean grower George Richter of Edwardsport, Indiana, knows the importance of keeping fields clean from planting through harvest. To control his most troublesome weeds, including marestail, waterhemp and giant ragweed, Richter uses Sonic® herbicide. With the residual control of Sonic, weeds are managed well into the season.
Mike McFadden, Grower — Ohio
As a fifth-generation farmer in Lees Creek, Ohio, Mike McFadden is familiar with common weeds. To achieve optimized yield, McFadden says it is important that fields are clean when he starts planting, and using Sonic® herbicide ensures that they will be weed-free when he is ready to plant.
Scott Johnson, Grower — Minnesota
Grower Scott Johnson of Starbuck, Minnesota, switched to Sonic® herbicide to manage glyphosate resistance and control troublesome broadleaf weeds in his field. Sonic extended the spray window later in the season by keeping weeds small and easier to control.
Featured Weeds
Palmer amaranth
Life cycle: Annual
Description: An erect summer annual that may reach 6½ feet in height. Seedlings have leaves that are narrow and green to reddish in color. Its first true leaves are alternate, oval-shaped and slightly notched at the tip of the leaf. Mature leaves are alternate, without hairs, and lance-shaped or egg-shaped in outline. Leaves are 2 to 8 inches long and a half inch to 2½ inches wide. Stems are without hairs. Leaf petioles often are as long as — or longer than — the leaf blade. Seed heads measure 1 to 2 feet in length.
Control: Preemergence, 4 to 6 oz./A Sonic® herbicide + 1 pt./A 2,4-D + 24 to 40 oz./A Durango® DMA® herbicide
Marestail (horseweed)
Life cycle: Annual
Description: Marestail is an erect winter or summer annual reaching 6½ feet in height. Seedlings develop a basal rosette from which sprouts a 2- to 6-foot tall stalk covered with narrow leaves. The stems usually are hairy and branch near the top. At the top of the stalks are small white flowers that ripen to white, windblown parachute seeds.
Control: Preemergence, 4 to 6 oz./A Sonic® herbicide + 1 pt./A 2,4-D + 24 to 40 oz./A Durango® DMA® herbicide
Giant ragweed
Life cycle: Annual
Description: Giant ragweed is a summer annual that can grow up to 16 feet tall. Its leaves are large and distinctively three-lobed but can sometimes be five-lobed. Its rough, hairy leaves are about 6 inches long and 4 to 6 inches wide. Opposite leaves occur in pairs at nodes. It prefers moist soil.
Control: Preemergence, 4 to 6 oz./A Sonic® herbicide + 1 pt./A 2,4-D + 24 to 40 oz./A Durango® DMA® herbicide
Controlled Weeds
This product delivers effective weed control against the following:
- Amaranth
- Barnyard Grass
- Crabgrass
- Horseweed
- Lamb's-quarters
- Mexicanweed
- Morningglory
- Mustard
- Nightshade
- Panicum
- Pigweed
- Pusley
- Ragweed
- Smartweed
- Spurge
- Thistle
- Velvetleaf
- Waterhemp
Refer to the Product Label for complete product efficacy information.
Find labels for this productState Registrations
- Registered
- Unregistered
Technical Specifications
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Active Ingredient
sulfentrazone; cloransulam-methyl
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Herbicide Group
Sonic® herbicide contains sulfentrazone, a Group 14 herbicide (PPO inhibitor); and cloransulam-methyl, a Group 2 herbicide (ALS inhibitor).
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Application Rate
Fall Spring Planting + 3 Days Apply before tillage or no-till Apply early to manage workload and reduce weather variability Apply up to 3 days postplanting to give beans a clean start RATE 4-6 oz. 4-6 oz. 4-6 oz. High rates recommended when herbicide-resistant weeds are present or when longer residual control is desired
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Application Timing
Sonic can be applied preemergence up to three days postplant.
Keys to Identifying Palmer Amaranth
Palmer amaranth grows much faster than pigweed or waterhemp species. Look for its rapid growth as you and your customers scout fields in spring. Watch this video to learn more about identifying Palmer amaranth from Corteva field scientist Dave Ruen.
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Elevore, Resicore, Sonic and SureStart II are not registered for sale or use in all states. Resicore and SureStart are not available for sale, distribution or use in Nassau and Suffolk counties in the state of New York. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Always read and follow label directions.