New research suggests waterhemp could be resistant to herbicides that aren’t even in the pipeline yet.

University of Illinois professor of weed physiology Dean Riechers tells Brownfield for more than 10 years they’ve been studying the weed’s detoxification strategies and recently introduced a four decade-old chemical that was never commercialized because corn, soybeans and wheat could not metabolize it.

“We figured that if a crop can’t metabolize it, then surely resistant waterhemp can’t metabolize it either.

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