Cotton and soybean farmers have a new pre-emerge tool for residual weed control. Warrant Herbicide is now labeled for pre-emergence use. The new, expanded label for Warrant Herbicide will now help to provide farmers the flexibility to manage small seeded grasses and broadleaf weeds, as well as tough-to-control weeds like Palmer amaranth and tall waterhemp in either a pre- or post-emergence application.
"Results from on farm trials over the last three years have been extremely positive, with excellent crop safety and strong residual weed control when applied pre-emerge," says Tyler Hackstadt, selective chemistry marketing lead for Monsanto. “This label expansion for Warrant Herbicide will offer farmers and retailers increased flexibility with pre-emerge and post-emerge applications. Warrant can be applied at 1.25-2qts (2.5-4pts) pre-plant, at-planting or pre-emerge up to R2 in soybeans and through first flower in cotton. The formulation is the same. The only change is a newly expanded label that will include pre- and post-emergence use.”
Stanley Culpepper, Ph.D., professor and Extension agronomist at the University of Georgia, has conducted pre-emergence trials with Warrant herbicide. “If you’re a cotton producer, you’re well aware of a herbicide called Warrant Herbicide – you’re using it post-emergence,” Culpepper says. “But when we come to talk with you this winter, we’ll tell you to use it pre-emergence. In fact, I think it’s the safest pre-emergence material we can use.
“We won’t use Warrant herbicide by itself. We’ll still need to tank-mix it with another chemistry to help protect it. But it will reduce our input costs a little bit, and it also will reduce our herbicide injury slightly,” he says.
Warrant herbicide provides residual control of grasses and small seeded broadleaf weeds, including foxtails, lambsquarters, Palmer pigweed, and waterhemp. Warrant herbicide can be tank mixed with Roundup brand agricultural herbicides and applied to cotton and soybean products that include Roundup Ready technology. The encapsulation technology helps provide improved crop safety and up to 30 days of residual weed control.