Last July, Extension specialists in southwest Missouri started to notice strange symptoms in their corn crop: purpling in the leaf tips, stunted plants, and abnormal ears.
Then, they started to notice the corn leafhoppers.
“We estimate from the time we first found them in July to the end of the season, 90% of the state was covered by corn leafhoppers,” said Mandy Bish, an Extension crop pathologist at the University of Missouri.
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