Explorative Study of Aquaponics Systems in Indonesia

Nurhayati Br Tarigan, Simon Goddek and Karel J. Keesman
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Nurhayati Br Tarigan: Mathematical and Statistical Methods-Biometris, Department of Plant Science, Wageningen University & Research, 6700 PB Wageningen, The Netherlands
Simon Goddek: Mathematical and Statistical Methods-Biometris, Department of Plant Science, Wageningen University & Research, 6700 PB Wageningen, The Netherlands
Karel J. Keesman: Mathematical and Statistical Methods-Biometris, Department of Plant Science, Wageningen University & Research, 6700 PB Wageningen, The Netherlands

Sustainability, 2021, vol. 13, issue 22, 1-26

Abstract: Aquaponics is the combined cultivation of fish in aquaculture systems and plants in hydroponic systems. This study aimed to explore and evaluate new aquaponics system designs in Jakarta, Indonesia, in terms of water and nutrient efficiency, and/or profitability. In total, one brackish water system with barramundi and tomato (BW) and three freshwater systems with Nile tilapia, rice, and duckweed (FW + DW), Nile tilapia and rice (FW − DW), and Nile tilapia and tomato (FW-tomato) were investigated using dynamic mathematical models. The results showed an increase of N, P, and water use efficiency by 10%, 18%, and 31%, respectively, in FW-tomato compare to FW − DW. Meanwhile, FW + DW only slightly increased the efficiency but worsened the already negative net present value (NPV) of FW − DW due to the high land prices. The BW system had similar water and nutrient efficiency to FW-tomato, but lower NPV. Profit of the BW and FW-tomato becomes comparable if the hydroponic area in the BW system can be expanded by 35%, or the selling price of tomato or fish in the BW can be increased by 20%. Given the expected growth of both the production of tomatoes and aquaculture in Indonesia, there is potential for further introduction of aquaponics systems in Indonesia.

Keywords: modeling; aquaponics; freshwater; brackish water; nutrient and water use efficiency; economic analysis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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