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¹ Biological Control Research Institute, Adana DOI : 10.16882/derim.2020.622159 Viewed : 2072 - Downloaded : 969 This study was conducted in two walnut orchards including Şebin, Yalova-4 and Sütyemez-2 with Şebin and Sütyemez-2 varieties in 2012 and 2013 in Central district of Kahramanmaraş province. The efficacy of the mating disruption technique was investigated by using dispensers loaded with `(E, E)-8,10-dodecadienol, n-dodecanol,n-tetradecanol 50%, (Z)-11-tetradecenyl acetate 50%` pheromone for the management of Codling moth [Cydia pomonella L. (Lep.: Tortricidae)]. Trial was established as large parcel experimental design having two characters -mating disruption (MD) and control (NP, no pesticide) application. The population dynamics of the pest was monitored by sex attractant pheromone traps. The pheromone dispensers were applied at 1000 dispensers ha-1 (5 dispensers tree^-1) and total 3000 dispensers were applied in the orchard. The dispensers were tied to different directions and to a suitable branch located at 1/3 top part of the tree. The emission amounts of dispensers were determined by weekly measuring of the weight of 10 dispensers, and the emission amount was 61 mg h^-1 dispenser^-1 in MD plot. Counts for fruit damage assessment was evaluated by inspecting 1000 fruits at harvest period. The average infestation rates were calculated as 5.1-21.3% and 4.8-20.1% in MD and NP plot, respectively. As a result of this study, it was determined that the usage of 1000 dispensers ha^-1 in walnut orchards can be used effectively as an alternative method instead of chemical control against C. pomonella for organic production and for integrated pest management. Keywords : Walnut; Codling moth; Cydia pomonella L.; Mating disruption technique