Abstract
Murray cod, Maccullochella peelii peelii, and Green oak lettuce, Lactuca sativa, were used to test for differences between two aquaponic flood regimes; reciprocal flow (hydroponic bed was periodically flooded) and constant flow (hydroponic bed was constantly flooded), in a freshwater aquaponic test system, where plant nutrients were supplied from fish wastes, while plants stripped nutrients from the wastewater before it was returned to the fish. The Murray cod had FCRs and biomass gains that were statistically identical in both systems. Lettuce yields were good and a significantly greater amount of both biomass and yield occurred in the constant flow treatment. Constant flow treatments exhibited greater pH buffering capacity, required fewer bicarbonate (buffer) additions to control pH and maintained lower conductivity levels than reciprocal flow controls. Water consumption in the two systems was statistically identical. Overall, results suggest that a constant flow flooding regime is as good as, or better than, a reciprocating flooding regime in the aquaponic test system used.
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References
Alleman, J.E. and Preston, K. 2002. Behaviour and physiology of nitrify-ing bacteria. Web archive of the Aquaculture Network Information Centre. http://aquanic.org/publicat/state/il-in/ces/ces-240_biology.htm
Burgoon, P.S. and Baum, C. 1984. Year round fish and vegetable production in a passive solar greenhouse. In: Proceedings of the 6th International Congress on Soilless Culture, Luntern, Netherlands, 28 April–5 May, pp. 151–172.
Dontje, J.H. and Clanton, C.J. 1999. Nutrient fate in aquaculture systems for waste treatment. Transactions of the American Society of Agricultural Engineers 42: 1073–1085.
Goto, E., Both, A.J., Albright, L.D., Langhans, R.W. and Leed, A.R. 1996. Effect of dissolved oxygen concentration on lettuce growth in floating hydroponics. Proceedings of the In-ternational Symposium in Plant Production in Closed Systems. Acta Horticulturae 440: 205–210.
Imsande, J. and Touraine, B. 1994. N demand and the regulation of nitrate uptake. Plant Physiology 105: 3–7.
Ingram, B. 2002. Murray cod aquaculture: now and into the future: outcomes from a pro-ject investigating the intensive commercial production of Murray Cod. In: Murray Cod Aquaculture: Now and Into the Future. Proceedings from a workshop held at the Victorian Institute of Animal Sciences, Attwood, Victoria, Australia, 5 August 2002.
Jackson, M.B. 1980. Aeration in the nutrient film technique of glasshouse crop production and the importance of oxygen, ethylene and carbon dioxide. Acta Horticulturae 98: 61–78.
Lennard, W.A. and Leonard, B.V. 2003. The use of the Australian freshwater fish, Murray cod, Maccullochella peelii peelii (Mitchell) in an integrated, freshwater Aquaponic Test System (in press).
Lewis, W.M., Yopp, J.H., Schramm, H.L. and Brandenburg, A.M. 1978. Use of hydroponics to maintain quality of recirculated water in a fish culture system. Transactions of the American Fish Society 197: 92–99.
Masser, M.P., Rakocy, J.E. and Losordo, T.M. 1999. Recirculating aquaculture tank production systems: management of recirculating systems. Southern Regional Aquaculture Centre Publication No. 452. Southern Regional Aquaculture Centre, USA.
McMurtry, M.R., Sanders, D.C., Patterson, R.P. and Nash, A. 1993. Yield of tomato irrigated with recirculating aquacultural water. Journal of Production Agriculture 6: 429–432.
McMurtry, M.R., Sanders, D.C., Cure, J.D., Hodson, R.G., Haning, B.C. and St. Amand, P.C. 1997. Efficiency of water use of an integrated fish/vegetable co-culture system. Journal of the World Aquaculture Society 28: 420–428.
Naegel, L.C.A. 1977. Combined production of fish and plants in recirculating water. Aquacul-ture 10: 17–24.
Nair, A., Rakocy, J.E. and Hargreaves, J.A. 1985. Water quality characteristics of a closed recirculation system for Tilapia culture and tomato hydroponics. Second International Conference on Warm Water Aquaculture–Fin Fish. Proceedings of a conference, Hawaii, USA, pp. 223–254.
Rakocy, J.E. 1989. Vegetable hydroponics and fish culture: a productive interphase. World Aquaculture 20: 42–47.
Rakocy, J.E. and Hargreaves, J.A. 1993. Integration of vegetable hydroponics with fish culture: a review. In: Wang, J.K. (ed.), Techniques for Modern Aquaculture, American Society of Agricultural Engineers, St. Joseph, Michigan, USA, pp. 112–136.
Salsac, L., Chaillou, S., Morot-Gaudry, J.F. and Lesaint, C. 1987. Nitrate and ammonium nutrition in plants. Plant Physiology and Biochemistry 25: 805–812.
Seawright, D.E., Stickney, R.R. and Walker, R.B. 1998. Nutrient dynamics in integrated aquaculture–hydroponic systems. Aquaculture 160: 215–237.
Sutton, R.J. and Lewis, W.M. 1982. Further observations on a fish production system that incorporates hydroponically grown plants. Progressive Fish Culturist 44: 55–59.
Sutton, R.J. and Sutton, H.E. 1983. Evaluation of an aquarium with external biofiltration. Journal of Aquaculture and Aquatic Sciences 3: 37–40.
Waten, B.J. and Busch, R.L. 1984. Tropical production of tilapia (Sarotherodon aurea) and tomatoes (Lycopersicon esculentum) in a small-scale recirculating water system. Aquaculture 41: 271–283.
Wess, D. and Stuarty, K. 1987. The influence of bicarbonate enrichment and aeration on carbon dioxide and oxygen in NFT nutrient solutions used for lettuce production. Soilless Culture 3: 51–62.
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Lennard, W.A., Leonard, B.V. A comparison of reciprocating flow versus constant flow in an integrated, gravel bed, aquaponic test system. Aquaculture International 12, 539–553 (2004). https://doi.org/10.1007/s10499-004-8528-2
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DOI: https://doi.org/10.1007/s10499-004-8528-2