Roundup has bred quite a few mutant weeds,
such as marestail and ragweed that haven’t yet made it to Georgia.
But the king of mutant superweeds everywhere is Palmer Amaranth: pigweed.
About pigweed,
Georgia Extension weed scientist Dr. Stanley Culpepper says:
Economic survival will depend on managing the seedbank!!!!
That’s on page 30 of a 46 page presentation at the
2010 Beltwide – Consultants Conference,
after discussing how rapidly Roundup-Ready seeds have been adopted:
And how the value of advice on weed control during that period
rapidly decreased as a direct correlation: