Toxicity Of Piper Betle L. (Piperaceae) Against Spodoptera Litura Fab. (Lepidoptera: Noctuidae)

Abstract

The biological activity of Piper betle extracts (Hexane, chloroform, ethyl acetate and methanol) was used for treatment with Spodoptera litura. The experiments were carried out with concentrations of 0.625, 1.25, 2.5 and 5 percent in a leaf disc no choice method and compared with control S. litura. Ethyl acetate extract was high feeding deterrent and larvicidal activity for third instar larvae of S. litura (2.5 and 5 percent concentrations, 63.74 and 72.8 percent respectively). The ethyl acetate extract on third instar larvae of S. litura showed LC50 value was 2.41%. Food consumption, digestion, relative consumption rate, efficiency of conversion of ingested food, efficiency of conversion of digested food, and relative growth rate values declined significantly but approximate digestibility of treated larvae was significantly higher as a result of treatment. Larval survival, pupal survival, larval period duration, pupal period duration and pupal weight also inhibited. Qualitative analysis of P. betle ethyl acetate extract revealed that contains phytochemical such as, steroids and quinines.The high biological activity of these quinines from P. betle ethyl acetate extract could be used as an active principle during the groundwork of botanical insecticides for lepidopteran pests. Based on their growth inhibitory and feeding deterrent properties, some of this plant extract have higher for use as alternative crop protectants against a number of pest species.