Insecticidal Activity of Different Botanical Plant Extract Powders against Rice Moth (Corcyra cephalonica) an Insect Pest of Store Grain

Abstract

Rice moth (Corcyra Cephalonia) is one of the major insect pests of rice grains. It attacks the grains and reduces the rice quality and makes it unfit for the human consumption. For the management of this insect pest, six different botanical powders (Azadirachta indica seed powder, Azadirachta indica leaves powder, Nicotine powder, Eucalyptus powder, Withania coagulans and Datura stramonium ) were used and compared with control group. We observed that the maximum larval and pupal period of rice moth was observed on Azadirachta indica seed powder while minimum larval and pupal period was observed in the control group. Maximum larval mortality % and minimum pupal emergence % of rice moth was noticed on Azadirachta indica seed powder, while a statistically significantly decrease larval mortality % and minimum Pupal emergence % was found in control groups. Similarly, a lowest adult’s longevity of rice moth male and female was observed on Azadirachta indica seed powder, however a maximum adult’s longevity of rice moth male and female was observed on their control groups. A maximum Fecundity of rice moth was observed in control group, while a minimum Fecundity of rice moth was observed in Nicotine leaves powder group as compared with others treatment. A maximum oviposition rate of rice moth was observed on Withania coagulans and Datura stramonium leaves powder, while a minimum oviposition rate of rice moth was observed in Nicotine leave powder as compared with others treatment. A maximum repellence % of rice moth larvae were observed Azadirachta indica powder and minimum repellency % of rice moth larvae was found on Withania coagulans powder. A maximum antifeedents of rice grain moth larvae was observed in control group. Whereas, a minimum antifeedents % of rice grain moth larvae was found on Azadirachta indica seed powder as compared with control group. We concluded that Azadirachta indica  seed, Azadirachta indica leaves and Nicotine leaves powder have great potential to reduce the pest population of rice moth in stored grains.