The insecticidal aciivity of pesticides be'Jnging to differen' groups. Iipronlt
cypermethrin. malathion. irnidaclourid and azadirachtin was testeo against males.
females and larvae of the Red Palm Weevil (RPW). Rhynchophorus ferrugineus
(Olivier). by both the feeding cod the topical application methods. Fipronil was the
most effective one with lC;o values of 0.00033. 0.;)00024 and 0.000031 % against
larvae. males and females. respectively by the feeding method. Azadirachtin was the
leas: effective pesticide with LC~o values of 1.68. > L sno > 2 % a;ainst the above
mentioned stages. rescectively. In the case of topical application t'.»)dcity. r,pronil w.s
also the most effective insecticide. Generally, insects were more susceptible to the
tested insecticides through the feeding route than they were through the topical
application route.