Abstract: The experiment, conducted in Nablus, Palestine, involved a detailed cost analysis and comparison of barley production in aquaponic and hydroponic systems over a six-month period. Both systems were analyzed for initial investment, operational costs, and production outcomes, including tray net weight, dry matter, and protein content at 7 and 14 days. Chemical analysis was performed to determine crude protein, ash, fiber, and other nutritional parameters. Statistical analysis used a general linear model with significant results determined at P < 0.05. Results indicated that aquaponic systems, particularly at 14 days, achieved higher net weights, dry matter, and protein content compared to hydroponic systems. The aquaponic system produced the highest as-fed production, dry matter, and protein yield, highlighting its superior productivity. The cost analysis revealed that while both systems require significant upfront investments, aquaponics may offer dual income streams from fish and plant sales, enhancing economic viability. The study underscores the potential of aquaponic systems for sustainable, efficient, and high-yield barley production, aligning with sustainable agricultural goals by promoting resource conservation and minimizing environmental impact.
Keywords: Hydroponic, Aquaponic, Crude Protein, Cost Benefit Analysis.