Effects of different types of fertilizers on plankton productivity in earthen ponds

Kolo, R.J. and Mani, I.A. and Musa, H.A. (2003) 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 ,Maiduguri, Nigeria, pp. 127-131.

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Abstract

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.

Item Type: Conference or Workshop Item
Title: Effects of different types of fertilizers on plankton productivity in earthen ponds
Personal Creator/Author:
CreatorsEmail
Kolo, R.J.
Mani, I.A.
Musa, H.A.
Page Range: pp. 127-131
Date: 2003
Event Title: 16th Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: Maiduguri, Nigeria
Event Dates: 4-9 November 2001
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria; experimental culture; fertilizers; phytoplankton; ponds; primary production; zooplankton; algae
Subjects: Biology
Item ID: 3605
Depositing User: Ms Maria Kalentsits
Date Deposited: 07 Jul 2010 07:17
Last Modified: 29 Sep 2011 17:06
URI: http://aquaticcommons.org/id/eprint/3605

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