Date of Award
Master of Science (MS)
Dr. Shyam S. Kurup
Dr. Mohammed Abdul Mushen Alyafei
Aquaponics uses waste generated by fish as plant nutrients within a re-circulating system that returns clean water back to the fish. The purpose of this study was to cultivate the high quality of lettuce (Lactuca sativa L.) and Tilapia (Oreochromis niloticus L.) production in an integrated aquaponic system with recirculating aquaculture system in the UAE climatic condition on three different densities and feeding regimes. An experiment was conducted under greenhouse conditions in the United Arab Emirates in 2016 (from April to August). The evaluation of the production was based on three parameters viz., head of the lettuce production, total weight, and leaf number under three different densities of lettuce (12, 18, and 28 in foam) and three different feeding regimes (1, 2, and 3 per day). Based on the results, the total fresh weight and head weight showed a significant increase. The finding of leaf number proved that different densities do not impact the number of leaves. Control densities (18 plants) showed the best results on total fresh weight and head weight, compared to other densities. However, the feeding frequency regime (3 times a day) had no significant effect on plant production. The results also showed both Ca and Na had no significant differences under different plant densities. The outcomes of Fe and Mo elements showed no significant differences among all treatment densities although, the feeding regime has been changed among them. The level of pH showed a marginal decrease during the period of the experiment. The current aquaponic system has been established for the lettuce/tilapia fish integration and concluded that the low feeding frequency (one time a day) is optimum for the aquaponics system in the UAE climatic conditions for better productivity. However, future studies on other crop and/or fish system combinations in aquaponics to determine how crop yields are affected by operating at specific pH levels of water for the long-term sustainability of production.
Suhail Alkaabi, Ahmed Salem Mohammed, "EVALUATING DIFFERENT DENSITIES OF LETTUCE (Lactuca sativa L) WITH VARYING LEVELS OF FEEDING REGIMES ON TILAPIA FISH (Oreochromis niloticus L) IN AQUAPONICS SYSTEM" (2018). Theses. 763.