Other Plant Disease — United States
Researchers at the University of California [UC] have identified the 3-cornered alfalfa treehopper (_Spissistilus festinus_) as the 1st known vector for red blotch-associated virus in greenhouse experiments. They caution that the discovery does not mean it is the only vector. However, the finding opens new avenues to help control both the virus and the pest.
The hopper is native to North America, but its range has largely been restricted to the southern United States. [Grapevine] red blotch
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