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What Can Be Done About Late-season Weeds?
Weeds may have gotten a slow start this spring, but they worked fast to play catch-up in corn and soybean fields across the Midwest. Hopefully, you were able to implement an effective program approach to weed control, and there are minimal weed escapes.
But if weed escapes are a problem, you may be asking yourself which products are available that can control late-season weeds and is it worth spraying those fields again?
“Fortunately, late-emerging weeds don’t pose a very big threat to yield,” says Ron Geis, market development specialist at Corteva Agriscience. “However, their offspring can plague a field for several years, so preventing late-emerging weeds from seeding is still beneficial.”
The best thing to do after a postemergence application is to intensively scout fields. Look for disease symptoms, insect damage and, of course, weed escapes. If there are still weeds present, you may want to consider hand-spraying weeds in the field or physical weed removal to lower populations of weed seed.
If there are trouble spots, a preharvest or postharvest strategy may be needed. This is also a good planning exercise for the following year. Knowing specific weed problems and where the trouble spots are will keep you on the right track.
When applying herbicides early next season, it’s important to always include residual products. This will help manage later weed flushes and keep the total weed seedbank low.
“Growers have been seeing great postemergence residual control in corn with Resicore REV herbicide and in soybeans with Enversa herbicide,” Geis said. “We’re also excited about the strong postemergence weed control with Kyro.”
Kyro™ herbicide is the first corn herbicide to combine the three proven modes of action of acetochlor, clopyralid and topramezone in a single premix for both postemergence and residual control of more than 65 of the toughest broadleaf and grass weeds.
Resicore® REV herbicide provides powerful weed control of more than 75 broadleaf and grass weeds, with a long-lasting residual up to 8 weeks.
Enversa™ herbicide goes to work on late-season weeds with its proprietary formulation of an encapsulated acetochlor that enables the herbicide to drive to the soil and provide a residual barrier against weeds that haven’t emerged, while tank-mix partners remain active on emerged weeds.
Consider Fall Burndown Applications
You can take action against weeds this fall with a burndown application. Burndown applications provide numerous benefits, including a more streamlined workload with fewer hours of spring work, better-prepared fields at planting and the opportunity for increased yield potential come next harvest. And if you still have prepay funds with the TruChoice® offer, investing in fall weed control is a great way to use those remaining dollars. See qualifying products here.
Enversa™, Kyro® and Resicore® REV are not registered for sale or use in all states. Enversa, Kyro and Resicore REV are not available for sale, distribution or use in Nassau and Suffolk counties in the state of New York. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Always read and follow label directions
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