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Plan your victory against weeds.
Clean fields and higher yield start with a strong battle plan. For soybean growers, there’s no stronger ally than Sonic® herbicide. When applied preemergence, it’s proven to deliver long-lasting, broad-spectrum control and prevent weeds from invading your fields.

Take back your fields.

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.

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.

Nick Saathoff, Retailer — Illinois

Retailer Nick Saathoff of Heritage FS, Inc., in Bourbonnais, Illinois, finds applying a residual herbicide provides a valuable window of time to manage workloads, attend to other activities or wait out the weather. In addition to saving time, programs using residual herbicides offer additional benefits to soybean growers over glyphosate-only programs.

Gary Mills, Retailer — Iowa

Retailer Gary Mills of West Liberty, Iowa, helps his customers battle marestail, chickweed and other winter weeds. He recommends using Sonic® herbicide and 2,4-D in a fall burndown program to control these difficult weeds in the fall and provide residual control of waterhemp and ragweed in the spring so his customers start with a clean soybean field in spring.

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Fight back against tough weeds.

Sonic® herbicide stops hard-to-control weeds before they can invade soybean fields. With long-lasting residual control, Sonic keeps working to defend against yield-robbers.

Barnyardgrass

Waterhemp

Life cycle: Annual

Description: Barnyardgrass is an annual grass that prefers wet sites. Stems of young barnyardgrass plants often grow outward along the ground before turning upward. Stems are flattened near the base and may reach a height of 5 feet. This weed is the only common summer grass that has no hairs or membranes at the collar region and lacks a ligule. Flower heads are extremely variable but they often droop slightly, with lower flower branches farther apart than upper ones. It is closely related to and resembles junglerice without the distinctive purple bands.

Control: Preemergence, 4 to 6 oz./A Sonic® herbicide + 1 pt./A 2,4-D + 24 to 40 oz./A Durango® DMA® herbicide

Cocklebur

Waterhemp

Life cycle: Annual

Description: A summer annual that produces a conspicuous prickly cocklebur and ranges from ½ foot to 6½ feet in height. The relatively large, linear to oblong, waxy cotyledons help to distinguish this weed in the early stages of development. In addition, the long triangular leaves, stems with maroon to black lesions, and the distinctive prickly cocklebur fruit all are features that help in the identification of this weed. The cotyledons of common cocklebur are much longer and more linear than those of giant ragweed.

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

Waterhemp

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

Ivyleaf morningglory

Waterhemp

Life cycle: Annual

Description: A summer annual twining or climbing vine with distinctive three-lobed leaves and large showy purple to blue or white flowers. Cotyledon leaves have a distinctive butterfly shape. Leaves, stems and fruit can be somewhat hairy. It produces burlike seedpods.

Control: Preemergence, 4 to 6 oz./A Sonic® herbicide + 1 pt./A 2,4-D + 24 to 40 oz./A Durango® DMA® herbicide

Lambsquarters

Waterhemp

Life cycle: Annual

Description: Common lambsquarters is a summer annual with medium to pale green stems with red stripes. Stems tend to be multibranched, growing 1 to 6 feet tall. Leaves are shaped like a goose foot, often with a whitish powdery coating. Common lambsquarters prefers fertile, cultivated soils, meaning that a lambsquarters infestation is a good indicator of good soil.

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)

Waterhemp

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

Palmer amaranth (pigweed)

Waterhemp

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

Velvetleaf

Waterhemp

Life cycle: Annual

Description: Velvetleaf is aptly named because the large leaves are velvety-hairy. It is an erect summer annual with leaves and stems that are covered with short, soft hairs. Seedlings have one round and one heart-shaped cotyledon. The first true leaves and subsequent leaves are alternate, heart-shaped and covered with hairs on both surfaces. Mature leaves are approximately 2 to 6 inches long and wide and have slightly toothed margins.

Control: Preemergence, 4 to 6 oz./A Sonic® herbicide + 1 pt./A 2,4-D + 24 to 40 oz./A Durango® DMA® herbicide

Waterhemp

Waterhemp

Life cycle: Annual

Description: Common waterhemp is a slender, willowy plant with many branches. Mature plants range from 4 inches to 12 feet in height. Stems and leaves often are brightly colored, varying from deep red or pink to emerald green. Its stems, leaves and seed head all may be differently colored on a single individual plant. Stems and leaves are very smooth and hairless with a bright, glossy appearance. Leaves are long and narrow.

Control: Preemergence, 4 to 6 oz./A Sonic® herbicide + 1 pt./A 2,4-D + 24 to 40 oz./A Durango® DMA® herbicide

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Label Facts

You have an ally in Sonic®.

Sonic® herbicide is proven to defeat hard-to-control weeds that can invade soybean fields and rob you of yield potential. To learn more, read the Label Facts.

APPLICATION TIMING

Sonic can be applied preemergence up to three days postplant.

Application Flexibility to Fit Your Operation

Application Timing

Benefits

  • Broad-spectrum control of large- and small-seeded broadleaf weeds
  • Contains two nonglyphosate modes of action to control weeds multiple ways, effectively managing weed resistance to protect soybean yield potential
  • Long-lasting residual performance allows for optimum timing of postemergence applications, such as Durango® DMA® herbicide
  • Works in all tillage systems
  • Sonic herbicide is tank-mix-compatible with many other herbicides, including Durango DMA.

Plan Of Attack

  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 are recommended when herbicide-resistant weeds are present
or when longer residual control is desired
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RESIDUAL CONTROL WITH SONIC®

Evaluations made four weeks after application

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