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Abstract
56-62. This
research is aimed to examine the water quality and productivity of dryland catfish pond based on the existing
technology and land priority in Gunungkidul. Samples from nine ponds employing intensive, extensive, and semi-intensive technology in high priority land, middle priority land and low priority land so that there were nine ponds of sample (high priority land with intensive technology or PTI, high priority land with extensive technology or PTE, high priority land with semi-intensive technology or PTS, non-priority land with intensive technology or NPI, non-priority land with extensive technology or NPE, non-priority land with semi-intensive technology or NPS, middle priority land with intensive technology or PSI, non-priority land with extensive technology or PSE, and middle priority land with semi-intensive technology or PSS) analysed to find out the water quality such as the ammonia, nitrate, and nitrite contents; pH; DO; temperature and turbidity; land productivity; and profit. To find out the productivity analyzed from initial stock density and the number of crops. Analysis of data used scoring of water quality and productivity. The highest sample ponds will be suggested as a model for technology applied in Gunungkidul Regency. Generally the water quality of catfish ponds in Gunungkidul was high ammonia, DO in nonpriority land was the lowest level. Turbidity in nonpriority pond was not good because the water resources contain much CaCO3 from karst rock. While, the other water quality parameters, such as nitrate, nitrite, pH and temperature was good standard for catfish farming development. The highest water quality and productivity was PTI pond whose score 0.96 and productivity 11.67 kg/m2. The lowest water quality and productivity was PSE pond whose score 0.6 and productivity 0.83 kg/m2. Therefore, high land priority using intensive technology was the most effective to develop catfish farming in Gunungkidul Regency.
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Copyright (c) 2015 Aquacultura Indonesiana
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References
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References
Alam, A. and Y.S. Al-Hafedh. 2006. Diurnal dynamics of water quality parameters in an aquaculture system based on recirculating green water technology. J. Appl. Sci. Environ. Manage., 10:19–21.
Boyd, C.E. 2003. Guidelines for aquaculture effluent
management at the farm-level. Aquaculture,226:101–112
Isyiagi, N.A., K.L.Veverica, R. Asiimwe, and W.H. Daniels. 2009. Manual for commercial pond production of the African catfish in Uganda, Kampala, p. 222
Iwama, G.K., M.M. Vijayan, and J.D. Morgan. 2000. The stress response in fish. Ichthyology, recent research advances. Oxford and IBH Publishing Co, Pvt. Ltd, New Delhi.
Rohmana, D., E.H. Surawidjaja, S. Sukenda, and J. Ekasari. 2015. Water quality and production performance of catfish–prawn co-culture with organic carbon source addition. Aquaculture International, Vol. 23. Pp: 267-276
Septriani, N.I, Sudarmadji, and Baiquni. 2015.
Carrying capacity based on multi-criteria evaluation of marginal land for catfish farming in Gunungkidul Regency, Yogyakarta. International Journal of Chemical, Environmental and Biological Sciences (IJCEBS), Vol. 4. Issue 4
Shoko, A.P., S.M. Limbu, H.D.J. Mrosso, and Y.D.
Mgaya. 2014. A comparison of diurnal dynamics of water quality parameters in Nile tilapia (Oreochromis niloticus, Linnaeus, 1758) monoculture and polyculture with African sharp tooth catfish (Clarias gariepinus,Burchell, 1822) in earthen ponds. Int. Aquat. Rest., Vol. 6. 56
Townsend, C.R. and B. Baldisserotto. 2001. Survival of silver catfish fingerlings exposed to acute changes of water pH and hardness. Aquaculture International, Vol. 9. Pp: 413-419