Fruit peel waste is one of the organic wastes that has the potential to be used as raw material for liquid organic fertilizer (POC). This study aims to determine the quality of POC based on fruit peel waste enriched with coconut water and rice bran and its effect on the growth of land spinach (Ipomoea reptans Poir.). The study used a Completely Randomized Design (CRD) with four treatments, namely control (P0), POC concentration of 20 mL L⁻¹ (P1), 40 mL L⁻¹ (P2), and 60 mL L⁻¹ (P3), each with five replications. POC is made through fermentation of fruit peel waste, coconut water, rice bran, EM4, and brown sugar for 14 days. Observed parameters included plant height, leaf number, leaf color, plant condition, and macronutrient content of N, P, and K. The analysis showed that the Liquid Organic Fertilizer (POC) contained 0.05% total N, 0.02% P₂O₅, and 0.86% K₂O₅. The application of POC resulted in different growth responses in water spinach plants. The 60 mL L⁻¹ treatment showed the best growth, with a plant height of 19.1 cm and an average leaf count of 7.2 at the end of the observation. The POC application supported the vegetative growth of water spinach plants. Therefore, fruit peel waste has the potential to be used as an environmentally friendly POC raw material and as an alternative organic fertilizer for plant cultivation.

Keywords: liquid organic fertilizer, water spinach, fruit peel waste

Amir, N., Berliana, P., Ika, P., Dessy, T.A., Ahmad, S., & Neni, M. (). Penyuluhan Pemanfaatan Limbah Buah-Buahan Sebagai alternatifPupuk Organik Cair di Kelurahan Tangga Takat, Kecamatan Seberang Ulu II, Kota Palembang. Altifani Journal: Internasional Journal of Community Engagement, 3 (2), 14-17.

Marjenah., Wawan, K., Ida, N., Keren, H.M.S., & Retno, P.E. (2017). Pemanfaatan Limbah Kulit Buah-Buahan Sebagai Bahan Baku Pembuatan Pupuk Organik Cair. Jurnal Hutan Tropis, 1 (2), 120-127.

Martha, G. A., Mustika, A., & Krisdhianto, A. (2024). Aplikasi pupuk cair organik dari buah dan sayur terhadap pertumbuhan tanaman kangkung (Ipomoea aquatica). Bioma: Jurnal Biologi dan Pembelajaran Biologi, 10(1), 1–10.

Putri, B. G. E., & Hendri, M. (2023). Pemanfaatan limbah sayuran sebagai pupuk organik cair dan pengaruhnya terhadap pertumbuhan kangkung hidroponik. Jurnal Biologi dan Pendidikan Biologi, 15(1), 45–53.

Subagio, B.B., Arif, N., Muhiasah, N.M., & Rizkha, A.R. (2023). Pengelolaan Limbah Kulit Buah dan Sayuran Menjadi Obat Luka. Jurnal Pengabdian Masyarakat Indonesia (JPMI), 3 (5), 667-672.

Tanti, N., Nurjannah., & Ruslan, K. (2019). Pembuatan Pupuk Organik Cair Dengan Cara Aerob. Jurnal Ilmu Teknologi, 14 (2), 2053-2058.