“Dinosaur” herbicides coming back because of weed resistance

2,4-D is coming back. What many might consider a “dinosaur” may be the best solution for growers fighting weed resistance today, says Dean Riechers, University of Illinois associate professor of weed physiology. “Farmers can’t imagine going back to 2,4-D or other auxin herbicides,” Riechers says. “But herbicide resistance is bad enough that companies are willing to bring it back. That illustrates how severe this problem is.”

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