Toxicity test of turmeric rhizome and lemongrass extracts against Spodoptera exiqua mortality

Turmeric rhizome (Curcuma longa) and lemongrass (Cymbopongon nardus) is a spice plants that are used as ingredients for making traditional medicines and have high population. The research aimed to toxicity test of turmeric rhizome and lemongrass extracts as botanical insecticide against Spodoptera exiqua mortality. Tested using four concentrations and three times repeats. The concentration for extracts same is 25 gram/ 500 ml in water, 50 gram/ 500 ml in water, 75 gram/ 500 ml in water, 100 gram/500 ml in water. The result showed the toxicity test for both extracts cause mortality 43.33% from concentration 75 gram/500 ml in water.