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Evaluation of Biomass Yield and Water Treatment in Two Aquaponic Systems Using the Dynamic Root Floating Technique (DRF)

Laura Silva, Eucario Gasca-Leyva, Edgardo Escalante, Kevin Fitzsimmons, David Lozano
2015 Sustainability  
The experiment evaluates the food production and water treatment of TAN, NO2 − -N, NO3 − -N, and PO4 3− in two aquaponics systems using the dynamic root floating technique (DRF). A separate recirculation aquaculture system (RAS) was used as a control. The fish cultured was Nile tilapia (Oreochromis niloticus). The hydroponic culture in one treatment (PAK) was pak choy (Brassica chinensis,) and in the other (COR) coriander (Coriandrum sativum). Initial and final weights were determined for the
more » ... etermined for the fish culture. Final edible fresh weight was determined for the hydroponic plant culture. TAN, NO2 − -N, NO3 − -N, and PO4 3− were measured in fish culture and hydroponic culture once a week at two times, morning (9:00 a.m.) and afternoon (3:00 p.m.). The fish biomass production was not different in any treatment (p > 0.05) and the total plant yield was greater (p < 0.05) in PAK than in COR. For the hydroponic culture in the a.m., the PO4 3− was lower (p < 0.05) in the PAK treatment than in COR, and in the p.m. NO3 − -N and PO4 3− were lower (p < 0.05) OPEN ACCESS Sustainability 2015, 7 15385 in PAK than in COR. The PAK treatment demonstrated higher food production and water treatment efficiency than the other two treatments.
doi:10.3390/su71115384 fatcat:aiwk5ewlmjdkld6ri3m65xbjpa