The message to producers is: diversify, diversify, diversify. And control options can, and should, include several modes of action, preplant and post application, and in some cases even cultivation and rotations to different crops and different herbicide-tolerant packages.

“The reality now is that we cannot rely on a one-size-fits-all weed management strategy,” Glasgow says. And for producers who would once tank mix one herbicide for grasses and one for broadleaf weeds, it now means putting more than one active ingredient in the tank to target the same weed species and using a preemergence herbicide to keep weeds from emerging in the first place.

An example of a diverse program approach for soybeans, according to Glasgow, includes Boundary pre-applied followed by Flexstar GT 3.5 early post application. It uses four modes of action and provides residual control.

Diversifying is striking a chord with growers, reports Rajan Gajaria, marketing director, Dow AgroSciences. He’s heard more growers ask about the company’s future 2,4-D choline and glyphosate product called Enlist Duo to use with SureStart as a preplant in corn. “We are seeing more producers ask about this program in an effort to diversify their weed management system,” he says.