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Integrated pest management key to preventing herbicide resistant weeds

This is the third year in a row that I have seen tall waterhemp, over 6" tall, sprayed with a post-emergent herbicide combination containing dicamba. Last year, I noticed a few fields where it seemed that tall waterhemp had survived a late application of dicamba and appeared to have small seed heads. Is this the beginning of dicamba herbicide-resistant weeds? In 2019, University of Tennessee weed scientist Dr. Larry Steckel saw more escape pigweeds in fields where dicamba had been sprayed....
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