*Agricultural Research Station, Tamil Nadu Agricultural University, Kovilpatti-628501, Tamil Nadu
**Directorate of Knowledge Management in Agriculture, ICAR, Krishi Anusandhan Bhawan I, Pusa, New Delhi-110012
Department of Crop Sciences, Faculty of Agriculture, Mahatma Gandhi Chitrakoot Gramodaya Vishwavidyalaya, Chitrakoot, Satna, 485331
1 E-mail: savitavarma45@rediffmail.com
Online published on 16 May, 2012.
In life table studies of hadda beetle, series of age-specific mortality showed maximum mortality in the pupal stage (24. 37%) due to pupal parasitoids (Brachymeria sp.), blackening and cannibalism followed by fourth instar grub (22. 77%) due to parasitism by larval parasitoid (Pediobius foveolatus), dispersal and unknown factors. The total generation mortality was 118. 84%. In laboratory treatment, maximum mortality was recorded in nerium (10%) followed by NSKE (5%). In field studies, chlorpyriphos (0. 05%) proved more effective in reducing population (71. Hand 70. 50%) followed by nerium (10%) with 61. 19 and 63. 26%.
Brinjal hadda beetle, Henosepilachna vigintioctopunctata, life table
