More glyphosate resistant poa found

Because glyphosate is such a commonly used herbicide, it came as no surprise when glyphosate-resistant poa was detected in 2012 by Dr. Jim Brosnan at the University of Tennessee. Since that time, there have been few additional reports of poa resistance to glyphosate, which has been relief.

Until earlier this month, that is, when researchers at the University of California, Davis, have identified another poa biotype that is resistant to glyphosate. This population was found in an orchard, and not…