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Source of soybean root rot stumps scientists

4 years 8 months 1 week ago Monday, August 11 2014 Aug 11, 2014 August 11, 2014 2:39 AM August 11, 2014 in News
Source: Associated Press
By: Janet McConnaughey

NEW ORLEANS - LSU AgCenter plant pathologist Trey Price says soybean growers are finding a fungal disease called black root rot in their crops.

At Mississippi State University, extension plant pathologist Tom Allen says it makes leaves turn yellow, orange-brown or mottled even though their veins remain green. He says that if a plant is pulled out, much of the root will be broken off below the surface.

Scientists are trying to determine what fungus causes the disease, which turns the main roots black. They suspect it may be one that has been known for years in cotton.

But Allen says scientists, including some in Arkansas, have been trying unsuccessfully for years to grow the fungus from infected roots.

Price says fields continuously planted in soybeans appear to be the most susceptible.

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