Comparison of Heliothis armigera (Hubner) male moth catches in light and pheromone traps at udaipur, rajasthan, India

Abstract

Light and pheromone traps were compared for their relative efficiency and importance in monitoring the Heliothis armigera (Hubner) moths at the farm of Rajasthan Agriculture University, Udaipur, Rajasthan, India, during the years 1984/85 (4 June 1984 to 3 June 1985) and 1985/86 ( 4 June 1985 to 3 June 1986). Both kinds of traps showed three periods of moth activity during both the cropping years. Both types of traps showed almost a similar trend in population fluctuation during the cropping years and there were significant positive correlations between light and pheromone trap catches, (r=0.87 for 1984/85 and r=0.93 for 1985/86). However, pheromone traps had many advantages over light trap in monitoring the Heliothis armigera moths. L’efficacite de pieges lumineux et de pieges a pheromone pour capturer des insectes males de Heliothis armigera a ete comparee sur les terrains de l’Universite agricole du Rajasthan, Inde, pendant deux annees consecutives (1984-86). Les deux types de pieges ont permis de detecter trois periodes d’activite annuelle chez ce Lepidoptere ravageur. Les nombres de captures des deux pieges montrent une correlation significativement positive (r=0.87 pour 1984/85 et r=0.93 pour 1985/86). Les pieges a pheromone presentent neanmoins plusieurs avantages par rapport aux pieges lumineux.