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MU on signs of potential waterhemp resistance

There are signs of potential waterhemp herbicide resistance in Missouri.

University of Missouri weed scientist Kevin Bradley told participants at the MU Pest Management field day his department is proactively studying the effects of dicamba and glufosinate on waterhemp.

“Can I sit here and say we have an official dicamba resistant waterhemp? No. But, we have several suspicious populations that aren’t dying and we’re looking into them in more detail.”

Bradley points out there is already dicamba resistant palmer amaranth in the South, “And, usually, when something happens in palmer amaranth it’s going to happen in waterhemp eventually. We’ll just see what happens. It just is another emphasis that we cannot just rely on one herbicide, we’ve got to do multiple tactics, for sure.”

Bradley says MU is fortunate to be involved in several multi-state research projects through the United Soybean Board and the Missouri Soybean board.