Investigations were conducted to standardize the height of pheromone traps for mass trapping of pod borer, Helicoverpa armigera Hubner in pigeonpea. The results showed that the pheromone trap installed at 1.5 ft. above the plant height level was found superior in trapping the maximum number of male moths of H. armigera as compared to traps installed on other heights. The result of present experiment revealed that the trap installation at 1.5 ft. above the plant height proved effective for the installation of traps for monitoring and mass trapping of H. armigera.