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Desi Arzeti Nainggolan
Universitas Negeri Medan
Agriculture, Biological Sciences & Forestry

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Optimasi Pupuk Organik Cair Berbasis Limbah Kulit Buah dengan Penambahan Air Kelapa dan Dedak Padi Terhadap Pertumbuhan Kangkung (Ipomoea reptans Poir.) Beatreak Banjarnahor; Ahmad Shafwan Pulungan; Desi Arzeti Nainggolan; Mawar Gultom; Oktaviani Sitohang; Widyanti Saragi; Idramsa Idramsa
JURNAL AGROPLASMA Vol 13, No 2 (2026): Jurnal Agroplasma Vol.13 No.2 (Oktober 2026)
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v13i2.9516

Abstract

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
Co-Authors Ahmad Shafwan Pulungan Beatreak Banjarnahor Idramsa Idramsa Mawar Gultom Oktaviani Sitohang Widyanti Saragi