Soybean growers in several states are puzzled by soybean cupping that has recently come to light. There are three probable causes, according to Paul Johnson, extension weed science coordinator at South Dakota State University, including the cupping that is familiar to producers who have had injury from off-target dicamba.

“Yes, we do have dicamba cupping out there, we also have clopyralid cupping that looks a lot like dicamba,” Johnson told Brownfield Ag News.

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