ABSTRACT Jengkol is a typical plant from the Southeast Asian region, especially in Indonesia which has spread the various parts of Indonesia. The part of jengkol plant can be use as a vegetable pesticide is the jengkol peel. Jengkol peel contains alkaloids, saponins, flavonoids, and tannins. The aim of this study was to obtain an effective concentration of jengkol peel extract to control Spodo…