Analysis on the Mass-Trapping Effects by Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) Sex Pheromone Traps Deployed around the Tomato Glasshouse

摘要

Without pesticide applications, mass-trapping by sex pheromone was successful to control Spodoptera litura (Fabricius) in a large scale tomato glasshouse (10,000m~2) at a low cost of 60 won/m~2. Pheromone traps were placed both inside and outside of the glasshouse. Inside the glasshouse traps were installed in a regular space, one trap per 500 m2, to catch the moths that were present in the glasshouse, and traps were also set outside of the glasshouse, at intervals of ca. 20 m, to prevent the moths from invading the glasshouse. In the experiment, more than 400 S. litura were captured per trap.