Kolo, R.J. and Mani, I.A. and Musa, H.A.
Effects of different types of fertilizers on plankton productivity in earthen ponds.
In: 16th Annual Conference of the Fisheries Society of Nigeria (FISON)
, 4-9 November 2001
Three fertilizer types (NPK, Super-phosphate and cow dung) were applied at two levels (Low, 0.3 kg/25m super(2)/2weeks and High, 0.7kg/25 m super(2)/2weeks) to 12 ponds with two ponds serving as control. Each pond had an area of 25 m super(2). Application of fertilizers and monitoring of plankton productivity and water quality parameters continued fortnightly for 52 days. Results obtained were
subjected to Statistical Variance Analysis. The abundance of
phytoplankton was in the order: Chlorophyceae > Bacillariophyceae > Cyanophyceae > Desmideaceae. While that of zooplankton followed the order: Crustacean > Rotifer > Protozoan. Primary productivity showed a variation between treatments with lowest value of 5592 mg/O sub(2)/m super(3)/day obtained in the control and cow dung low application rates (1.5 kg/25 m super(2)/2weeks). The highest
value for primary productivity was obtained at M sub(2) (0.7 kg/25 m super(2)/2weeks, N.P.K) with primary productivity value of 7200 mg/O sub(2)/m super(3)/day, closely followed by M sub(4) (0.7 kg/25 m super(2)/2weeks, super phosphate) with 6792 mg/O sub(2)/m super(3)/day.
Conference or Workshop Item
||Effects of different types of fertilizers on plankton productivity in earthen ponds
||16th Annual Conference of the Fisheries Society of Nigeria (FISON)
||4-9 November 2001
||Fisheries Society of Nigeria
||Nigeria; experimental culture; fertilizers; phytoplankton; ponds; primary production; zooplankton; algae
Ms Maria Kalentsits
||07 Jul 2010 07:17
||29 Sep 2011 17:06
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