The purpose of this study was to determine the efficacy of various nutrient elements (Mn, Zn, Cu, and B) in controlling the fruit fly that attacks bitter gourd. Two doses of four micronutrients, Manganese (3, 6 kg/ha), Zinc (6, 12 kg/ha), Boron (2, 4 kg/ha), and Copper (6, 12 kg/ha), along with an insecticide Diazinon (16.8 kg/ha) as a control, were tested to see how they affected flower initiation, percent fruit infestation in number and weight at early, mid, and late growing stages, percent damage, and yield performance. In addition, a chemical study of the soil was performed to determine the residual effect. Zinc had a substantial effect on bitter gourd flower initiation and number. Manganese 6kg/ha, Mn 3kg/ha, and Cu 12kg/ha were found to considerably lower the percent fruit fly infection by both number and weight. The effect of micronutrients on fruit fly pupation in bitter gourd plant soil did not vary significantly. Mn 6ka/ha treated plots produced the maximum yield (19.3t/ha), followed by Mn 3kg/ha (17.91 t/ha) and Cu 6kg/ha (16.70 t/ha) treated plots. The maximum yield increase above control (54.07 percent) was recorded in the Mn 6kg/ha treated plot, followed by the Mn 3kg/ha treated plot. The quantity of nutrient that remained in the soil at the end of the crop growing season ranged from 21.95 to 43.23 percent, with Mn (43.23 percent) being the highest. Based on the findings, manganese could be used as an IPM component to control fruit flies on bitter gourd.