Development of Corcyra cephalonica (Stainton) on six varieties of brown and milled rice

Present research was carried to investigate the development of C. cephalonica on six varieties of brown and milled rice in a factorial design, including two factors i.e. rice type (brown and milled rice) and varieties (Cibogo, IR 64, Mekongga, Ciherang, Inpari 32, and Mentik Wangi). These were twelve treatment combinations each repeated three times. Each variety was assessed for population growth and developmental time of the pest. The observed variables were the number of larvae, pupae, adults, stadium of egg, larvae, pupae, pra-oviposition, oviposition, post-oviposition, and adult longevity. Results on population growth showed no significance influence in all treatment combination, while there was affect on the developmental period of C. cephalonica. The egg period was faster on Mekongga milled rice (3.27 days), while larva and immature development was faster on Ciherang milled rice i.e. 33.65 and 46.53 days, respectively. Pest was quick to develop on milled rice compared to brown rice.