<![CDATA[Liquid organic fertilizer (POC) from kitchen waste is an environmentally friendly and low-cost nutrient alternative for hydroponic plant cultivation. This study aims to test the effectiveness of kitchen waste POC as a substitute for AB mix nutrient solution in the cultivation of water spinach (Ipomoea reptans Poir.) using the Nutrient Film Technique (NFT) hydroponic system. The study was conducted in the greenhouse of Lampung State Polytechnic. The design used was a Completely Randomized Design (CRD) with 5 treatments and 4 replications. The treatments consisted of P0 (AB mix 100%), P1 (POC 100%), P2 (POC 75% + AB mix 25%), P3 (POC 50% + AB mix 50%), and P4 (POC 25% + AB mix 75%). The parameters observed included plant height, number of tillers, root length, plant fresh weight, and plant dry weight. The results showed that the P3 treatment (50% POC + 50% AB mix) produced plant growth and yield equivalent to the 100% AB mix treatment (P0), as indicated by the absence of significant differences between treatments. This finding indicates that the combination of POC and AB mix in equal proportions has the potential to reduce AB mix usage by up to 50% without reducing the productivity of hydroponic water spinach.]]>
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