Evaluation of toxicity assay of the methanolic extract of oleander leaves against fall armyworm

Abstract Oleander ( Nerium oleander L.) is a shrubbery plant with various functions as an ornamental, medicinal, bio-fungicide, and bio-insecticide. The study aimed to investigate the acute toxicity assay of methanolic extract leaves on fall armyworm Spodoptera frugiperda J.E. Smith). was conducted in Complete Randomized Design (CRD) for upper lower concentrations. concentrations’ results were calculated find intervals then used determine Lethal Concentration (LC) four repetitions using probit analysis. In addition, mortality, food, weight Analysis Variance (ANOVA). showed that concentration interval values from limit high methanol were: 0.23%; 0.32%; 0.45%; 0.63%; 0.88%. analysis concentrations at 48 Hours after Treatment (HAT) LC 50 by 0.86% 95 2.42%. lethal last day (D-20) 0.54% 1.76%, respectively. During 20 days observation period, larvae only consumed 162.36±13.48 mg baby corn highest (0.88%), compared 665.47±22.60 control. also affected larvae’s time consumption. resulting extracts can be control larvae.