Cost-benefit Analyses of Carp Polyculture in Ponds: A Survey Study in Rajshahi and Natore Districts of Bangladesh

Abstract

This study was conducted in two districts of northern part of Bangladesh from 2007 to 2009. A total of 100 carp polyculture ponds were selected randomly and fish farmers were interviewed to analyze the present status of inputs used, production, cost and benefit of culture. Liming was done at 262.91± 73.17 kg/ha/yr during preparation of pond and at 268.98±160.84 kg/ha/yr after stocking. Both organic and inorganic fertilizers were applied to prepare ponds and after stocking of seeds. The highest stocking density (5132.99±4036.69 No./ha/yr) was found for Thai punti. Six types of supplementary feeds were supplied to the stocked fishes and average cost was 45,953.87±19.566.99 BDT/ha/yr. Maximum 33% costs were spent during post stocking management. 53 carp culture ponds were leased pond and average lease value was 65,421.53±15,310.91 BDT/ha/yr. During preparation of ponds, costs for repairing the bottom and dike, aquatic weed control, and unwanted species control were 4,531.29±3,536.52 BDT/ha/yr, 1,213.73±798.01 and 3,315.67±1,761.25 BDT/ha/yr respectively. Costs of lime and fertilizers were found 7,854.05±3,388.65 BDT/ha/yr (during pond preparation) and 39,298.16±15,481.96 BDT/ha/yr (after stocking). Overall production cost was varied from 64,644.48 to 3,83,360.46 BDT/ha/yr. Average cost-benefit ratio was recorded 1:1.05.

Citation: Mohsin ABM,  Islam MN, Hossain MA and Galib SM (2012) Cost-benefit Analyses of Carp Polyculture in Ponds: A Survey Study in Rajshahi and Natore Districts of Bangladesh. Bangladesh Journal of Environmental Science 23: 103-107.