Design and placement of synthetic sex attractant traps for monitoring apple leaf roller,Archips pomivoraMeyrick (Lepidoptera: Tortricidae) in North Indian orchards*

Abstract

Abstract Monitoring procedures with different trap designs and their proper location within the tree canopy were standardized for Archips pomivora Meyrick, a predominant tortricid infesting apple in Himachal Pradesh. Two synthetic pheromonal lures OBLR and FTLR were used over three seasons (1982–1984). Trap design had no significant influence on moth catch. Trap placement in the tree canopy was an important factor influencing the magnitude of moth catch. Traps positioned in the upper half of the canopy and near the periphery attracted significantly more moths. This pattern remained consistent in both smaller (<4.0m) and taller (>7.0m) trees. Almost all the moths were captured within the canopy, and traps placed outside attracted very few moths.