This study investigated the efficacy of Chinese cabbage (Brassica Rapa) liquid manure as an organic fertilizer and evaluated its role in promoting sustainable vegetable production compared to conventional synthetic practices. A field experiment was conducted in Lusaka over an eight-week period to assess its impact on the growth and yield of eggplant (Solanum melongena). The main objective of the research was to assess the effects of Chinese cabbage (brassica Rapa) organic fertilizer and synthetic fertilizers on the growth and productivity of eggplants and the specific objectives was to determine the effects on vegetative parameters such as plant height, leaf length, and stem diameter rand yield attributes, including fruit number and weight. The experiment followed a completely randomized design with three treatments: T1 (Chinese cabbage liquid manure), T2 (synthetic fertilizer), and T3 (control, no fertilizer). Data collected from replicated plots were analysed using ANOVA, which revealed significant differences in leaf length, stem diameter, and fruit yield among treatments. The results demonstrated that the Chinese cabbage-based manure significantly enhanced fruit production and soil health, supporting its potential as a viable organic alternative for small-scale farmers seeking to reduce reliance on costly synthetic inputs while maintaining productivity.