Abstract

The oriental fruit moth (OFM) is one of the major fruit pests worldwide. Although the application of insect pheromones partially relieves the pressure of chemical pesticide on environmental pollution and food safety, the controlling effect is still poor because of the incompatibility of field application standard. This study was designed to examine the correlationship between the OFM catch and the diameter of sex pheromone trap, and then to obtain the optimal diameter. The results demonstrated that the catch was on the rise along with the increase of diameter within the limit of 10 to 35 cm. The correlationship equation is that y = -0.0025x³ + 0.0164x² + 0.00003x + 0.1043 (R2 = 0.9639), when the x = 4.333 (namely, the diameter of sex pheromone trap is about 25 cm), the catch reached the maximum 0.2089. Therefore, we suggest that the optimal diameter of sex pheromone trap is 25 cm, with a hope to provide a reference for field experiment.

Key words: Oriental fruit moth, sex pheromone trap, diameter.