In a 72-h bioassay experiment with plant extracts, highest mortalities were recorded at 0.5% (crude) and 75 ppm (solvent) concentration for fruits ofC. caudatus and flowers ofT. acuminata individually. For synergistic effect, only 0.2% of the mixture of these two crude extracts and 75 ppm concentration of chloroform: methanol (1:1 v/v) and ethyl acetate extracts showed 100% mortality after 24 h and 48 h of exposure respectively