THE WESTERN CHERRY FRUIT FLY, RHAGOLETIS INDIFFERENS (DIPTERA: TEPHRITIDAE): 3. DEVELOPING A MANAGEMENT PROGRAM BY UTILIZING ATTRACTANT TRAPS AS MONITORING DEVICES

Abstract Attractant traps, such as Pherocon ICPY®-MAGO trap and Pherocon®-AM Standard trap, were effective in monitoring emergence of the western cherry fruit fly, Rhagoletis indifferens Curran. Among the aerial traps tested, ICPY-MAGO, Pherocon-AM Standard, and Saturn yellow colored rectangles and spheres were equally effective. The ammonium carbonate traps were significantly inferior. A management program that utilized aerial traps as monitoring devices reduced the amount of spraying from 20 to 100%, depending on the fly population in the orchard, and resulted in a substantial saving of spray costs.