Fig. 1From: A plant-based extract mixture for controlling Spodoptera litura (Lepidoptera: Noctuidae)Structures of active ingredient compounds in A. calamus and P. retrofractum. a Piperine, b (2E,4E,14Z)-N-Isobutylicosa-2,4,14-trienamide, c beta-asarone, d alpha-asaroneBack to article page