EFFECT OF WATER SOURCES ON SOME MICROELEMENTS IN FISH FARM | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 28, Volume 76, Issue 1, March 1998, Page 351-358 PDF (2.14 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.1998.346338 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| ZEINAB A. NAGDI; IBRAHIM SH. ABDEL-FATAH | ||||
| Central Laboratory for Aquaculture Research, Abbassa, Agricultural Research Centre, Giza, Egypt | ||||
| Abstract | ||||
| The effect of two sources of water, fresh water and drainage water on some microelements (Fe, Mn, Cu, B, Mo, Pb, and Zn) in fish farm was studied. Six earthen pods (0.36 ha each) were stocked with Nile tilapia, mullet and commone carp. Each treatment was replicated in three ponds. Ponds were subjected to chemical fertilization ( urea-superphosphate) plus artificial feeding_ Results showed that drainage water was significantly higher than fresh water in Fe, Mn, B and Zn concentrations, while, concentrations of Cu, Mo and Pb were not significantly different between the two water sources (P>0.05). No significant effect on all microelements in the surface layer was noticed except a significant increase in Cu and B with fresh water treatment. Drainage water treatment increased significantly Pb. En the subsurface layer, only B increased significantly with fresh water. Drainage water did not show significant effect on all microelements. Phytoplankton abundance was better with drainage water. Ponds supplied with this source of water had higher net fish yield (1570.7 kg/0.36 ha) than ponds supplied with fresh water (1305.1 kg/0.36 ha). Net fish production of all polyculture species was significantly different among treatments except for common carp. | ||||
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