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Invasive Pigweed Threatens Soybean Crops

Nicole Erwin
/
WKMS

Kentucky soybean farmers are dealing with a pesky invasive weed that could choke out their crops.

Palmer amaranth, commonly called pigweed, is resistant to most herbicides and, for the first time, was spotted on Mike Burchett’s farm in Calloway County.

Burchett is the President of the Kentucky Soybean Association and says the super-weed started in Arkansas and is difficult to manage if it isn’t detected early.

“Roundup, which is our old standby, it’s resistant to it," Burchett said. "And it’s resistant to several other chemicals, so we just keep changing our cocktail.”

The USDA reports72 percent of Kentucky’s soybeans had been planted as of June 14. If preventative methods aren’t sufficient, farmers will have to resort to disking or hand cultivation.

Credit Wikimedia Commons/Author: Pompilid
Amaranthus palmerii, pigweed, photographed in Phoenix, Arizona

"It’s kind of like the superbugs that become resistant to antibiotics, and that's what that is in the weed family, it's resistant to our known control measures," said Burchett.

Burchett said it’s too early to tell whether or not the pigweed will affect the market. He'll be watching to see if big soybean state's like Illinois get hit with the weed.

Nicole Erwin is a Murray native and started working at WKMS during her time at Murray State University as a Psychology undergraduate student. Nicole left her job as a PTL dispatcher to join the newsroom after she was hired by former News Director Bryan Bartlett. Since, Nicole has completed a Masters in Sustainable Development from Monash University in Melbourne, Australia where she lived for 2 1/2 years.
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