Attack Of The Wine Bugs
To grape vines, the glassy-winged sharpshooter is as deadly as a malarial mosquito. The bug spreads a fatal bacterium called Pierce’s disease that chokes off a vine’s circulation, making it impossible for water to circulate and nourish the plant. The bacterium itself is present in small amounts in almost every vineyard, but infected plants can usually be identified and plucked out since Pierce’s disease grows slowly. Throw the sharpshooter into the mix, however, and the disease spreads like wildfire as the insect inserts its stylus into the woody grapevine and then jumps from plant to plant....