Integrated aquaculture-hydroponics system with paddy nursery on aquaculture pond
2008 (English)In: Asian Journal of Water, Environment and Pollution, ISSN 1875-8568, Vol. 5, no 3, 65-72 p.Article in journal (Refereed) Published
Large areas of land remain uncultivated after the rainy season due to lack of irrigation facilities in manycountries. There are also low lying areas, which remain waterlogged for the major part of the year. The returns fromthese areas in terms of agricultural crops and revenues are very poor. Adoption of integrated farming technology byincorporating aquacultural ponds in these areas has been found to increase the total yield and fetch higher financialreturn. Through aquacultural-hydroponic system, by using floating nurseries on aquacultural ponds, many benefitscan be obtained, e.g., double use of pond water, control of erosion of the dykes due to wind action, fishes get shadeduring hot summer days, reduces labour cost, minimizes the loss of pond water due to evaporation, control poachingof fishes, etc. In this study, floating structures of different sizes for the aquacultural tanks were designed and fabricatedand used for paddy nursery. The designed outer diameter of PVC hollow pipes (material used for making the floatingstructures) was found to be 3.0 cm and 4.5 cm for 0.15 m2 and 0.3 m2 of floating structures respectively. Theoptimum area of the floating structures and the number of fish in the tank were 40% and 42 fish/m2 respectively aftermaintaining 5.38 mg/L of dissolved oxygen. Tilapia (Oreochromis mossambicus) fish and rice plant were found togrow well in the same tank and the total profit in integrated farming was $15,000 per ha of surface area of the pondper year.
Place, publisher, year, edition, pages
2008. Vol. 5, no 3, 65-72 p.
gas dispersion, soil permeability, pressure fluctuation, Aquaculture, hydroponics, floating nursery, Tilapia-Rice culture
Other Environmental Engineering
Research subject Earth Science with specialization in Environmental Analysis
IdentifiersURN: urn:nbn:se:uu:diva-163157OAI: oai:DiVA.org:uu-163157DiVA: diva2:462915