"I've never seen anything that had this major an impact on our agriculture in a short period of time," said Ken Smith, a weed scientist at the University of Arkansas.
This past summer, Pace Hindsely of Coffee Creek Farms and other farmers started noticing the chemicals they routinely used were no longer working.
"The last three years it's really just exploded. There is no rhyme or reason as to how we can control it," Hindsely said. "I am worried about the future or what these fields will look like next year and the year after if we don't control this weed."