Pengaruh Konsentrasi Pupuk Organik Cair dari Jeroan Ikan Patin terhadap Pertumbuhan Duckweed (Lemna sp.)

Helmy Fadhil Musyaffa, Dr. Senny Helmiati, S. Pi., M. Sc.

2026 | Skripsi | BUDIDAYA PERIKANAN

Penelitian ini bertujuan untuk mengetahui kandungan hara pupuk organik cair (POC) dari jeroan ikan patin dan pengaruh konsentrasi pupuk organik cair tersebut terhadap pertumbuhan Lemna sp.. Penelitian dilakukan di Teaching Farm Departemen Perikanan Universitas Gadjah Mada. Rancangan penelitian menggunakan Rancangan Acak Lengkap dengan empat perlakuan yaitu P0 (kontrol), P1 (pemberian POC sebesar 1,5 mL/L), P2 (pemberian POC sebesar 2 mL/L), dan P3 (pemberian POC sebesar 2,5 mL/L) dengan masing-masing tiga ulangan. Penelitian meliputi pembuatan pupuk organik cair, pemeliharaan Lemna sp. dan sampling. Pemeliharaan dilakukan selama 21 hari dan pemberian pupuk serta sampling dilakukan setiap 7 hari. Parameter yang diamati yaitu kandungan hara pada pupuk organik cair limbah jeroan ikan, kandungan hara media pemeliharaan, doubling time, laju pertumbuhan spesifik, pertambahan biomassa, kualitas air, dan kandungan nutrien Lemna sp. Analisis data menggunakan uji ANOVA dengan tingkat kepercayaan 95?n dilanjut uji Dunnet-2sided apabila hasilnya berbeda nyata. Hasil analisis kandungan hara pupuk organik cair mengandung kadar C-organik 0,07%, bahan organik 0,13%, N total 0,026%, P total 0,01%, K total 0,088%, rasio C/N 2,89, pH 4,11, dan rerata suhu 27,8°C. Hasil penelitian menunjukkan perlakuan pemberian POC sebanyak 2,5 mL/L memberikan hasil yang nyata dengan doubling time 0,19 ± 0,05 hari , laju pertumbuhan spesifik 3,68±0,14 g/hari, dan pertambahan biomassa 21,252±2,75 g bila dibandingkan dengan kontrol  Hal ini menunjukkan bahwa pemberian pupuk organik cair limbah jeroan ikan patin dapat memberikan pengaruh terhadap pertumbuhan tanaman Lemna sp.

This study aims to determine the nutrient content of liquid organic fertilizer (POC) derived from Pangasius viscera and the effect of the fertilizer's concentration on the growth of Lemna sp.. The research was conducted at the Teaching Farm of the Department of Fisheries, Universitas Gadjah Mada. A Completely Randomized Design was employed with four treatments: P0 (control), P1 (LOF application at 1,5 mL/L), P2 (LOF application at 2 mL/L), and P3 (LOF application at 2,5 mL/L), each with three replicates. The study involved LOF production, Lemna sp. cultivation, and sampling. Cultivation lasted for 21 days, with fertilizer application and sampling performed every 7 days. Observed parameters included the nutrient content of the Pangasius viscera LOF, nutrient content of the culture medium, doubling time, specific growth rate, biomass increase, water quality, and nutrient content of Lemna sp. Data were analyzed using ANOVA (95% confidence level) followed by a 2-sided Dunnett's test if significant differences were found. Analysis of the LOF revealed the following composition: 0.07% organic C, 0.13% organic matter, 0.026% total N, 0.01% total P, 0.088% total K, a C/N ratio of 2.89, pH 4.11, and an average temperature of 27.8°C. The results showed that the treatment with 2.5 mL/L LOF treatment yielded significant results regarding doubling time (0.19 ± 0.05 days), specific growth rate (3.68 ± 0.14 g/day), and biomass increase (21.252 ± 2.75 g)—that did not differ significantly from the control. This indicates that the application of liquid organic fertilizer derived from Pangasius viscera can influence the growth of Lemna sp.

Kata Kunci : Biomassa, Jeroan Ikan Patin, Laju Pertumbuhan, Lemna, Pupuk Organik Cair