Insecticidal Activity of Diverse Extracts of the Citrullus colocynthis (L.) Against the Blue Green Aphid Acyrthosiphon Kondoi Shinji

The efficiency of three different extracts from stem and leaf of Citrullus colocynthis against the blue green aphid Acyrthosiphon kondoi Shinji was studied. Results showed that the ethanolic extracts from the two parts of C.colocynthis caused higher mortalities of aphids after 48 hours (96 % and 93 % for the stem and leaf, respectively). Toxicological parameters demonstrated that ethanolic extract from the stem of C.colocynthis was more toxic to aphids than leaf extract. This study suggests that detailed chemistry on the stem of C. colocynthis is required before applying it in the integrated pest management of aphids.