Officials from Tulare County, Calif., and the California Department of Food and Agriculture jumped into action last week after hundreds of potentially crop-killing Asian citrus psyllids were discovered on three young citrus trees. Workers are chemically treating trees in the area, setting traps and are expected to announce a quarantine this week. "We cannot have this pest and this disease in our area. It would be absolutely devastating," said David Roth, president of Cecelia Packing in Orange Cove, Calif.

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