Abstracts of papers presented at the 14th Congress of the Israeli Phytopathological Society Abstracts of papers presented at the 8th Meeting on Whiteflies in Field Crops, Vegetables and Ornamentals: February 15-16, 1993 ARO, The Volcani Center, Bet Dagan, Israel March 2, 1993 ARO, The Volcani Center Bet Dagan, Israel