Abstract:

The effects of the color, shape, sticky surface area and height in the crown of the sex pheromone traps on capture of Cydia trasias (Meyrick) male moth were evaluated in Zhongguancun, Beijing, in 1999. The white, green and yellow traps were much more effective than blue one. Triangle traps were much more effective than double disc and boat shape traps. The triangle trap of 500.0cm² were much more effective than those of 250.0cm² and 166.7 cm². The triangle traps hung in upper-middle part of the crown were much more effective than those of in middle and lower-middle parts. Thus, white, triangle traps of 500.0cm² provided a reliable tool for monitoring and control in pheromone system of Cydia trasias, when hung in the upper-middle part of the crown.

Key words: Cydia trasias (Meyrick), Sex pheromone, Trap, Attractivity