Cultivation of Tao Macroalgae (Spirogyra sp.) in Greenhouse With pH Control System
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Abstract
Cultivation of Tao macroalgae (Spirogyra sp.) was conducted in a greenhouse using raceway ponds equipped with a pH control system. The algae were initially grown at 500 g per pond (fresh weight) in 1,000 L of culture water for a period of 10 days. Growth and biomass production under different pH control conditions were compared. Three pH control treatments were tested: no pH control (control),pH maintained between 7.0-7.5, and pH maintained between 7.5–8.0. After 10 days of cultivation, the pH range of 7.5–8.0 resulted in the highest growth performance, with an average daily weight gain of 246.3 g/day (fresh weight), a specific growth rate of 17.8%/day, and a biomass yield of 148.1 g/m2/day. These values were significantly higher than those of the other treatments (p<0.05). The results indicate that pH control is an important factor influencing algal growth and biomass production. Therefore, the cultivation of Tao macroalgae in this greenhouse system shows strong potential for further application and development towards commercial production.
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References
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