Effects of Vermicompost on Growth of Cyprinid Fish and Water Quality of Warm Water Earthen Ponds

Abstract

Experiment was conducted in 0.0-ha earthen ponds to promote growth performance of silver carp and Cyprinus carpio and big head (cyprinid) plus phytoplankton and zooplankton and were estimated in a pond receiving mixed fertilizer with vermicomposting, with 6000 and 12000 kg per/ha/year mixed with fertilizer (VC₆ and VC₁₂) and 6000, 12000 kg  per/ha/year without vermicomposting (CO₆and CO₁₂). All treatments were compared finally. Significant differences were found in diversity and abundance of plankton in the pond exposed to fertilizer having CO₆, CO₁₂ and VC6, VC12 The used fertilizer and manure could be graded in the following descending order VC₁₂, VC6, CO₁₂, and CO6. The least concentration was accounted in control sets with 6000 kg manure. The highest production of fish was found in vats treated with VC₁₂ (12000kg/ha/year) followed by VC₆ (6000 kg / ha/year), CO₁₂ (12000 kg/ha/year), CO₆ (6000 kg/ha/year). The highest yield of fish in vats applied with VC₁₂ may be related to its highest manorial value.