<![CDATA[Fish-processing waste can be converted into liquid organic fertilizer (LOF), offering a potential nutrient source while reducing organic waste. This study evaluated the response of yardlong bean (Vigna sinensis L.) growth and yield to different concentrations of fish-waste LOF. The experiment was conducted at the Integrated Farming System Educational Garden of Universitas Bosowa using a randomized block design with four treatments, namely P0 (0 mL/L), P1 (50 mL/L), P2 (75 mL/L), and P3 (85 mL/L), and three replications. The recorded vegetative variables were plant height, number of leaves, stem diameter, and leaf width, whereas the generative variables were pod length, fresh pod weight, and number of pods. Based on the treatment means, P3 produced the greatest plant height (190.83 cm), stem diameter (4.38 mm), and fresh pod weight (531.40 g). P1 produced the highest number of leaves (64.30), leaf width (8.07 cm), and pod length (82.09 cm), while P2 produced the highest number of pods (11.87). Overall, concentrations of 75–85 mL/L provided the strongest yield response, although the best concentration differed among measured traits. Limbah pengolahan ikan dapat dimanfaatkan sebagai pupuk organik cair (POC), sehingga berpotensi menyediakan unsur hara sekaligus mengurangi limbah organik. Penelitian ini bertujuan mengevaluasi respons pertumbuhan dan hasil kacang panjang (Vigna sinensis L.) terhadap berbagai konsentrasi POC limbah ikan. Penelitian dilaksanakan di Kebun Pendidikan Integrated Farming System Universitas Bosowa menggunakan rancangan acak kelompok dengan empat perlakuan, yaitu P0 (0 mL/L), P1 (50 mL/L), P2 (75 mL/L), dan P3 (85 mL/L), serta tiga ulangan. Parameter vegetatif meliputi tinggi tanaman, jumlah daun, diameter batang, dan lebar daun, sedangkan parameter generatif meliputi panjang polong, berat segar polong, dan jumlah polong. Berdasarkan nilai rerata perlakuan, P3 menghasilkan tinggi tanaman (190,83 cm), diameter batang (4,38 mm), dan berat segar polong (531,40 g) tertinggi. P1 menghasilkan jumlah daun (64,30 helai), lebar daun (8,07 cm), dan panjang polong (82,09 cm) tertinggi, sedangkan P2 menghasilkan jumlah polong terbanyak (11,87 buah). Secara keseluruhan, konsentrasi 75–85 mL/L memberikan respons hasil paling kuat, meskipun konsentrasi terbaik berbeda antarparameter.]]>
