Some factors influencing the performance of pheromone traps for codling moth cydia pomonella oriental fruit moth cydia molesta and the 2 european grapevine moth species in italy lobesia botrana and eupoecilia ambiguella
Arsura, E.; Capizzi, A.; Piccardi, P.; Spinelli, P.
Bollettino di Zoologia Agraria e di Bachicoltura 15: 15-28
A 3 yr study (1975-1978) was undertaken in orchards and vineyards in northern Italy. Trapping devices were designed, constructed and tested. Trap design, color dosage and purity of synthetic attractants were studied. An initial cap charge of 1 mg of (8E,10E)-8,10-dodecadien-1-ol maintained an optimal attractiveness for 15 days to C. pomonella. In comparisons of attractive mixtures, pure Z-isomer was less attractive than any of the other mixtures containing the opposite isomer in tests involving C. molesta. Preliminary trapping indicated that isomeric impurities were detrimental to the effectiveness of (Z)-9-dodecen-l-yl acetate for E. ambiguella. Dark green traps were most effective for E. ambiguella. L. botrana pheromone was identified as (7E,9Z)-7,9-dodecadien-1-yl acetate and caps charged with this pheromone were most attractive.