Susceptibility of Spodoptera frugiperda J. E. Smith (Lepidoptera: Noctuidae) Collected from Central Java Province to Emamectin Benzoate, Chlorantraniliprole, and Spinetoram

Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) is a new pest on maize that has successfully spread to various regions in Indonesia. This can cause severe damage the affected plants. Most farmers have relied synthetic insecticides for control. research was conducted determine susceptibility level of S. larvae emamectin benzoate, chlorantraniliprole, and spinetoram by using diet-dipping method. There no registered insecticide control frugiperda, so three types used were based recommendation Ministry Agriculture Republic Five field-collected population from Central Java laboratory populations develop baseline each insecticide. First instar placed vials containing artificial diet treated with an untreated (treated water only), observed mortality seventh day data analyzed probit. Tegowanu most susceptible benzoate (LC50 = 0.11 mg/L), while least Wedi 0.39 mg/L) resistance ratio (RR) values 0.45-folds 1.60-folds compared population, respectively. Ngombol chlorantraniliprole 12.63 30.29 RR 0.90- 2.15-fold Meanwhile, Jogonalan 2.75 5.94 0.52- 1.12-fold population. Field-collected still tested being toxic chlorantraniliprole.