Pulse pod borer moth, Etiella zinckenella Tr., family (Pyralidae) is a dangerous pest of crops that produce pods, so it was recorded on more than 80 species of cultivated and wild legumes. The main damage is caused by second-generation caterpillars, which can lead to significant crop losses, which can exceed 50%. Monitoring the development of this pest can be carried out using sexual pheromone traps. By analyzing the captures, it is possible to accurately determine the start and dynamics of its flight. The influence of the geographical positioning of this pest led to the development of phenotypically variable populations with different pheromonal compositions. In this work, we studied the effect of different concentrations of the major component in two-component pheromonal blends on the biological effectiveness of the synthetic pheromone, on native populations of RM. In the laboratory "Integrated Plant Protection", within the IGPPP, the major and minor component of the sexual pheromone of the E. zinckenella, were obtained. The variants with two-component pheromone blends were formed by addition of 3% of minor component Z9-14:Ac on all rubber septa, loaded whith the basic component Z11-14:Ac in 3 concentrations of 1 mg, 1,25 mg and 1,5 mg. Pheromonal trap sets were composed of a delta trap, sticky plate and a rubber septum lure. In the summer of 2022, experiments were carried out on the experimental soybean fields of the IGFPP. Monitoring of pest development was first performed on acacias using sets of pheromone traps that were later placed on the experimental soybean plot, when the plants flowered. The observations were made every 5-7 days, stickly plates were changed every 15 days, rubber septa lures - once a month. The analysis of the data obtained in the evaluated variants showed the biological effectiveness of the two-component pheromone blends of Etiella zinckenella. Pheromonal blends with concentrations of 1 and 1,5 mg of the main component was highly effective with close values, with the average catches of males higher by 78% and 79%, respectively than the variant with the mixture that contained 1,25 mg of the main component. The pheromone blend containing 1 mg of the main component and 3% (0,03mg) of the minor component proved to be the most optimal in monitoring the native population of the pulse pod borer moth in the Republic of Moldova.