Pierce’s disease, a lethal disease of grapevines was recently discovered in Kentucky in the Fall 2001. The presence of bacteria, Xylella fastidiosa, was diagnosed using rapid real-time polymerase chain reaction (PCR) technology and serological (ELISA) test. In other regions where Pierce’s disease is endemic, several species of xylem-feeding leafhoppers (Cicadellidae) are the primary disease vectors. Throughout the summer 2002, selected vineyards in Kentucky were surveyed to determine the common leafhoppers species and their seasonal distribution. At each vineyard, yellow-sticky cards, direct plant sampling and sweep netting of the surrounding vegetation were conducted and leafhoppers collected. The collected leafhoppers were identified and subsequently preserved for later testing of the presence of the casual agent of Pierce’s disease. The survey information would provide information in developing and extending feasible, appropriate and acceptable integrated pest management and disease management programs especially for Kentucky viticulture industry and the region.
Species 1: Homoptera Cicadellidae Graphocephala versuta
Species 2: Homoptera Cicadellidae Graphocephala coccinea (candystripped sharpshooter)
Keywords: Xylella fastidiosa
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