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Analysis Analisis Produktivitas dan Kelayakan Usaha Penangkapan Rajungan (Portunus pelagicus) dengan Menggunakan Bubu Lipat Di Perairan Gebang Mekar Cirebon: Analysis of Productivity and Feasibility of Crab (Portunus Pelagicus) Fishing Business Using Folding Trap in Gebang Mekar Waters, Cirebon Jhohan Jhohan; Mochammad Riyanto; Selvi Tebaiy; Muhammad Fajar Fajri Fardhilah; Lathifa Marsya Nathania Ferani; La Ode Muhammad Iksan Yusuf; Riki Saputra; Taufiq; Rosmina Sasarari
AQUACOASTMARINE: Journal of Aquatic and Fisheries Sciences Vol. 5 No. 1 (2026): AQUACOSTMARINE: Journal of Aquatic and Fisheries Sciences
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jafs.v5i1.25005

Abstract

Perairan Gebang Mekar, Kabupaten Cirebon, Jawa Barat, merupakan salah satu wilayah potensial perikanan tangkap dengan produksi rajungan (Portunus pelagicus) sebesar 5.645–6.553 ton per tahun, di mana bubu lipat berperan sebagai alat tangkap utama yang ramah lingkungan dan efisien operasional. Penelitian ini bertujuan untuk menganalisis produktivitas dan kelayakan finansial usaha penangkapan rajungan menggunakan bubu lipat melalui pendekatan experimental fishing selama 30 trip dengan 1.000 unit bubu. Hasil penelitian menunjukkan produktivitas rata-rata 8,67 kg/trip atau 104,04 kg/tahun, total investasi Rp231.122.900, pendapatan bersih Rp161.695.536/tahun, benefit cost ratio (BCR) 1,92, financial rate of return (FRR) 69,9%, dan payback period of capital (PPC) 1,43 tahun. Usaha dinyatakan layak secara finansial karena BCR > 1, FRR jauh melebihi suku bunga bank (19%), serta periode pengembalian modal relatif singkat dengan rekomendasi pengoptimalan manajemen investasi dan kepatuhan terhadap regulasi ukuran tangkap demi keberlanjutan sumber daya
Utilization of Aquaculture Effluent as an Organic Fertilizer to Improve Soil Fertility and Cassava (Manihot esculenta Crantz) Yield Wira Hadianto; Nana Ariska; Taufiq; Maulidil Fajri; Nhyra Kamala Putri; Abdul Latif
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 2 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 2 Mei 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i2.5330

Abstract

This study evaluated the potential of aquaculture effluent as a liquid organic fertilizer to enhance soil fertility and cassava (Manihot esculenta Crantz) productivity. Conducted in Blang Berandang Village, West Aceh Regency, the experiment employed a Randomized Complete Block Design (RCBD) with six treatments: a control (0% effluent), inorganic fertilizer, and four effluent concentrations (25%, 50%, 75%, and 100%), each replicated four times. Measured variables included soil chemical properties (pH, organic carbon, total nitrogen, available phosphorus, and exchangeable potassium), plant growth parameters, and tuber yield. Results indicated that the aquaculture effluent was rich in nutrients, containing 35.2 mg L⁻¹ nitrogen, 12.6 mg L⁻¹ P₂O₅, and 22.4 mg L⁻¹ K₂O, with a C/N ratio of 3.6. Effluent application significantly improved soil physicochemical properties, raising soil pH from 5.5 to 6.9 and organic carbon from 1.25% to 2.45%. Furthermore, total nitrogen, available phosphorus, and exchangeable potassium levels increased in proportion to effluent concentration. The 75% effluent treatment yielded the optimal results, producing a plant height of 135.4 cm and a tuber weight of 4.12 kg per plant—a 90% increase compared to the control. These findings demonstrate that aquaculture effluent significantly enhances soil fertility and cassava productivity relative to untreated controls. Consequently, its utilization offers a sustainable, eco-friendly strategy for integrated aquaculture–agriculture systems, contributing to increased crop production while mitigating environmental impacts associated with aquaculture waste.