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Mating disruption for the control of the olive moth, Prays oleae (Bern) (Lep., Yponomeutidae) with the ajor sex pheromone component

Abstract: Mating disruption to control the olive moth Prays oleae (Bern) was tested from 1992 to 1996 in olive groves in Greece. The major sex pheromone component (Z)‐7‐tetradecenal was formulated in β‐cyclodextrin (β‐CD) and polyvinyl chloride (PVC) polymers. Pheromone trap catches were reduced by up to 96–100% in the mating‐disruption plots. During the first year of mating disruption a treatment with Bacillus thuringiensis (var. kurstaki) (Bt) was applied to reduce the first generation or larvae. Fruit damage in the mating disruption plots was lower compared with the fruit damage in Bt, insecticide and untreated plots. In high fruiting years, the proportion of fruit damage was lower than in low fruiting years. Mating disruption applied in the same olive grove over several years progressively reduced the olive moth population from year to year.