The company is expanding the availability of Prequel, a corn herbicide premix that contains the active ingredients rimsulfuron and isoxaflutole. Prequel provides contact plus residual grass and broadleaf control in conventional and herbicide-resistant corn programs. “We are expanding Prequel outside the three "I" states,” says Jeff Carpenter, corn portfolio manager for DuPont. “It is a versatile product that can be mixed with other registered herbicides, or can stand alone.” A dry formulation, Prequel can be applied at 1 to 2 oz./acre.

Awaiting regulatory approval (which is expected by early 2011) is Realm Q, a corn herbicide designed for early postemerge application to control small weeds on contact and to give residual control. “We are targeting the Midwest, but the product will have no label restrictions for other areas of the country,” Carpenter says. Realm Q is a dry product with a use rate of 4 oz./acre. It targets broadleaf weeds, including waterhemp, velvetleaf and common ragweed. The “Q” identifies the product as including built-in safener technology.

LeadOff herbicide is targeted to the mid-south market for burndown plus residual control of grasses and broadleaf weeds, including marestail, annual bluegrass, henbit and other winter annuals. It contains rimsulfuron and thifensulfuronm and can be applied in late fall and early spring, greater than 30 days preplant, to soybeans. It also can be applied preplant to field corn. LeadOff is a dry, water-dispersible granule formulation and can be tank mixed with appropriate burndown herbicides, including glyphosate, glufosinate, paraquat, 2,4-D LVE or dicamba, to broaden the weed control spectrum. LeadOff is awaiting EPA registration.

Abundit Extra is a glyphosate-based herbicide that contains 4 lbs./gal. of the active ingredient glyphosate, in the form of its isopropylamine salt. It is for use in Roundup Ready corn and soybeans, for reduced tillage and fallow systems, and for many non-crop areas. It can be applied as a replant burndown in the fall or spring, preemergence burndown, postemergence to glyphosate-tolerant corn and soybeans, and pre- or postharvest. Abundit Extra is not available in all states.