Applying Noni Leaf Extract to Spinach Plants as An Armyworm Control Method:

A Review

Abstract

The armyworm (Spodoptera frugiperda) is a major pest of spinach, recognized for its hairless caterpillar form and propensity to attack in large numbers. Signs of infestation include torn leaves, irregular holes, and severe damage that often leaves only the veins and stems intact. Control strategies consist of preventive measures that involve removing and destroying eggs, caterpillars, or pupae on plants, and curative measures that utilize herbal pesticides, particularly a mix of noni leaf extract and wheat flour. The systematic literature review (SLR) aims to assess the potential of noni (Morinda citrifolia) leaf extract as a natural alternative to synthetic insecticides for controlling armyworm infestations in spinach cultivation. Noni leaves contain toxic compounds such as saponins and flavonoids, which disrupt armyworm development and can cause nerve damage, leading to suffocation. Regular monitoring is essential to assess the effectiveness of these control methods. The result showed that noni leaf extract can effectively reduce armyworm populations in spinach cultivation while minimizing harmful impacts on the environment and non-target organisms.