Effect of vermicompost as pond fertilizer on growth performance of common carp (Cyprinus carpio linn.)
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Date
2010
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Publisher
CCSHAU
Abstract
In the present investigations, the experiment was carried out in .0033 ha.sized ponds at the fish
hatchary farm of CCSHAU, Hisar for 150 days to study the effect of vermicompost as pond fertilizer
on growth performance of common carp. The different organic fertilizers viz. Vermicompost
@10000kg/ha/yr, vermicompost @ 5000kg/ha/yr and cowdung @10000kg/ha/yr were used to
monitored their effect on water quality parameters and fish growth. One forth dose of fertilizers were
applied 15 days prior to fish stocking and remaining doses given at fortnightly interval. The
fry/fingerlings were stocked @ 10000/ha/yr and fed upon supplemented feed given at 5% of their body
weight. The water parameters like DO, pH, K, P and NH4-N was found in optimum range in all treated
ponds and observed maximum value under the vermicompost @ 10000kg/ha/yr. The range of pH(7.90
+0.016 – 8.19+0.007 mg/l), Dissolved oxygen (7.136+0.012 – 7.22+0.01mg/l), Potassium
(18.392+0.027 – 22.688+0.014mg/l), Phosphorous (0.137+0.001 - 0.166+0.001mg/l) and NH4-N
(0.107+0.0 - 0.127+0.001mg/l) increased significantly(P<0.05) in the ponds received vermicompost @
10000kg/ha/yr. As vermicompost easily and large amount of nutrients( N,P,K) release in water due to
which plankton production also found to be highest in ponds treated with vermicompost @
10000kg/ha/yr. Growth of fishes also observed maximum where the plankton population was
maximum. So, it is concluded that vermicompost @ 10000kg/ha/yr shows maximum growth of fishes
followed by vermicompost @5000kg/ha/yr and cowdung @10000kg/ha/yr. There is three times more
growth of fishes occurred in vermicompost @ 10000kg/ha/yr as compare to control where no
fertilizers were used. All the observed data statistically analysed by using completely randomized
design (CRD) at 5% level of significance.
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Keywords
Biological phenomena, Acidity, Fatty acids, Linseed, Fats, Diseases, Oils, Lipids, Research methods, Participation