This is the first report about the development of superweeds:
as farmers liberally use Roundup on crop fields, weeds have adapted and forced farmers to use more labor-intensive methods. Farmers are being forced to spray fields with more toxic herbicides, pull weeds by hand and abandon no-till methods in favor of regular plowing. Farmers also are growing Roundup Ready crops using genetically modified seed to tolerate the chemical, allowing farmers to spray their fields to kill the weeds while leaving the crop unharmed.
So far, 10 resistant species have been found in at least 22 states. From the start, Monsanta has downplayed the risk as “serious but manageable.”