New Ways for Handling No-Till Corn Weeds And Resistance Worries

With fewer new herbicides coming on the market each year, no-tillers are paying much closer attention to developing more effective weed-management plans. As a result, no-tillers are intently studying how various herbicide and tankmix combinations perform in their fields.

Four industry representatives who spoke on weed control in no-tilled corn at the recent National No-Tillage Conference offered distinct ideas for the coming year. They included:

  • Dane Bowers, a technical support representative for Syngenta Crop Protection from Kokomo, Ind.
  • David Lamore, a senior technical service representative with Bayer CropScience at Bryan, Ohio.
  • Barry Nash, a technology development manager with Monsanto at Plainfield, Ind.
  • Bruce Maddy, a customer agronomist for corn herbicides with Dow AgroSciences at Noblesville, Ind.

Plan For Weed Resistance

Bowers says no-tillers need to think seriously about keeping glyphosate-resistant problems from developing on their farms. “Syngenta’s recommendations are not to use more than two glyphosate applications on any given field in one year during a 2-year period,” he says. “In the year following, you should rotate away from glyphosate and use other herbicide products. This means no-tilling both Roundup Ready soybeans and Roundup Ready corn back to back is not desirable from a resistance management standpoint.”

While the Roundup Ready system is a good program, he maintains that you need to choose whether a no-tilled Roundup Ready corn or Roundup Ready soybean system best fits your farm. One way for no-tillers to strive to prevent resistance is to rotate chemistries, such as using Gramoxone Max as a burndown herbicide…

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Frank Lessiter

Frank Lessiter has served as editor of No-Till Farmer since the publication was launched in November of 1972. Raised on a six-generation Michigan Centennial Farm, he has spent his entire career in agricultural journalism. Lessiter is a dairy science graduate from Michigan State University.

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