The aim of our study was the synthesis of the active components of the apple worm, Cydia pomonella L. - E8, E10-dodecenol and the grape moth, Lobesia botrana S. - E7, Z9-dodecadienol and their minor components E-8-dodecenol and E-9 -dodecenyl acetate. Different amounts of components were impregnated in each rubber dispenser. Pheromone traps was given to be tested in field monitoring trials to determine the most effective optimal pheromone blend ratio in the geographical and climatic conditions of the Republic of Moldova.

In this paper is reported the evaluation of biological efficacy of two minor components that was added to the basic sex pheromone component Cydia pomonella L., E8, E10-C12-OH. The use of minor component- C.M.-1 of increasing concentrations in binary mixture compositions with the basic sex phe-romone component of codling moth on pheromone-impregnated rubber septa in delta pheromone traps has shown an increased effectiveness by 56-62% in field trials on apple orchard. At the same time, the number of males caught in delta pheromone traps where were used minor component - C.M.-2 in binary mixture compositions increased by 29-35%. Auxiliary research is still needed.