Uji Efektivitas Pestisida Nabati Kombinasi Ekstrak Chromolaena odorata L. dan Annona muricata L. terhadap Mortalitas Hama Ulat Daun (Plutella xylostella)

Abstract

P. xylostella is one of the main pests of cabbage plants. A combination of kirinyuh and soursop leaves is an effort to increase the effectiveness in controlling P. xylostella. The purpose of this study was to determine the effect of a combination of kirinyuh and soursop leaf extract on the mortality, toxicity, and feeding activity of P. xylostella. The application technique used was the feed dipping method on a laboratory scale. The experimental design used CRD (Completely Randomized Design), the experiment consisted of 7 treatments namely control, a single extract of kirinyuh leaves concentration of 40%, a single extract of soursop leaves with concentration of 40%, a combination extract kirinyuh and soursop leaves concentrations 10%, 20%, 30%, and 40%. Data were analyzed by analysis of variance and DMRT 5% for follow-up test. The results showed that the combination of extracts had an effect on the mortality, toxicity, and feeding activity of P. xylostella. The highest mortality was 51,72% at a combined concentration of 40%. The LC50 value was 36,61% and the LT50 value was 5,26 days at a combined concentration of 40%. The highest inhibition of eating activity with a value of 90% at a combined concentration of 40%.