Standardization of Number of Pheromone Traps for The Management of Helicoverpa armigera (Hubner) Hardwick in Pigeon Pea Shah K. D.*, Gole C. A., Zala M. B., Bharpoda T. M. Department of Entomology, B. A. College of Agriculture Anand Agricultural University, Anand, 388 110 *email: kalpit_195@yahoo.com
Online published on 13 January, 2016. Abstract To standardize number of pheromone traps required for mass trapping of Helicoverpa armigera (Hubner) Hardwick in pigeon pea [Cajanus cajan (Linnaeus) Millspaugh], an experiment was carried out on farmer's field located at village Sitapara in Savli taluka of Vadodara district during rabi 2011–12 and at villages Jitodia and Navli in taluka and district Anand during rabi 2012–13. Pheromone traps @ 30, 40 & 50/ha was installed. Five plants were selected randomly in each quadrate and observations on population of eggs and larva as well as damage to pods were recorded on 2 randomly selected twigs (each of 15 cm length) per plant. The highest moth catches (9630 during first year and 11272 during second year with an average of 10451 per ha) were recorded in the plots installed with 50 traps/ha. Further, the pigeon pea crop having treatment of 50 traps/ha recorded the lowest population of eggs (3.95/twig) and larvae (2.89/twig) as well as per cent pod damage (7.96) and found significantly superior then 30 and 40 traps/ha. Thus, 50 traps/ha was found effective in annihilation of males of H. armigera and thereby in reducing population of eggs and larvae as well as per cent pod damage in pigeon pea crop. Top Keywords Helicoverpa armigera, moth catches, mass trapping, pheromone traps, pigeon pea, pod damage. Top |