EPA has approved a new label permitting the use of Sequence, a nonselective herbicide that also provides residual control of emerging weeds, on soybeans.

Sequence, a premix of potassium glyphosate (Touchdown) and S — metolachlor (Dual Magnum) manufactured by Syngenta Crop Protection, was registered for use in cotton in the Southeast in 2004.

“With the recent registration of Sequence on soybeans, our herbicide portfolio now offers growers a broad range of products to fit their needs,” said Syngenta's Corey Huck. “Sequence offers superior weed control and weed resistance management capabilities.”

Huck, Sequence brand manager, says the herbicide controls a broad-spectrum of broadleaf weeds and grasses in glyphosate-tolerant soybeans.

A premix applied in one step, the herbicide offers two unique modes of action with glyphosate providing down-to-the-root foliar activity while the S — metolachlor component acts to control weeds before they emerge.

“By combining the broad-spectrum weed control of Touchdown with the residual weed control of Dual Magnum, Sequence is a complete herbicide for soybeans that combines two unique modes of action to help with weed resistance management,” said Chuck Foresman, technical brand manager for Sequence.

“There are no known weed biotypes with confirmed resistance to S — metolachlor in the United States, making this specially designed product an outstanding choice for growers seeking diversity in their chemical rotations.”

Foresman said Sequence provides residual and contact control of more than 170 types of weeds, including barnyardgrass, crabgrass, foxtail, fall panicum, common lambsquarters and pigweed.

Designed for postemergence use, Sequence should be applied to glyphosate-tolerant soybeans prior to the third trifoliate with application rates from 2.5 to 3 pints per acre. It will deliver one to three weeks residual control on several grasses and small-seeded broadleaves. Sequence may also be used in conventional soybeans pre-emergence.