A University of Tennessee Extension weed scientist says they’ve confirmed dicamba-resistant Palmer amaranth in Tennessee.

Larry Steckel says the

dicamba-resistance issue is still categorized as low. “It’s certainly not on

every acre, it’s just getting started in some fields,” he says.  “

Steckel says it has a

rating of 2.5, which indicates weeds can survive up to 2.5 times the labeled

dicamba use rates. 

But, he tells Brownfield it is concerning because the number of tools available to farmers to control weeds is dwindling. 

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