Killer Pig Weeds Threaten Crops in the South

Across the South, there's a weed that man can no longer kill. It's called the pig weed, and for decades farmers controlled it by spraying their fields with herbicides. "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...Full Story
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