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Use of Ditch-dike System in Low Lying Areas to Improve Livelihoods of Farmers of Bangladesh

D. C. Shaha
Department of Fisheries Management, Bangabanbhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, Bangladesh

M. M. Hossain
Department of Horticulture, BSMRAU, Gazipur, Bangladesh.

S. Alam
Department of Genetics and Fish Breeding, BSMRAU, Gazipur, Bangladesh

A. Hossain
Department of Aquaculture, BSMRAU Gazipur-1706, Bangladesh.

Abstract/ Executive Summary:

The people living in low lying areas in the southern part of Bangladesh are vulnerable due to repeated water-logging over the last 10 years. The application of pond-dike system in flood-prone low-lying areas may be a high potential for improving livelihoods of poor households. In this purpose, an experiment was conducted to evaluate the growth performance and production of different fish species in monoculture (tilapia and shing) and polyculture (rohu, catla, silver carp, pangus, and grass carp) systems using commercial fish feeds to determine a profitable fish culture technique in pond-dike system in low lying area. The fish production in polyculture system was 7.4 t/ha/120 days. The production of tilapia and shing in monoculture system was 9.9 t/ha/120 days and 2.0 t/ha/120 days, respectively. Overall yield of tilapia was significantly higher (p<0.05) than that of polyculture and monoculture of shing. The result indicated on the basis of benefit-cost-ratio (BCR) that gross margin was significantly higher (p<0.05) in tilapia monoculture than that in polyculture and monoculture of shing.

Keywords: Ditch-dyke, Low lying areas, Livelihood, Integrated aquaculture

Location: Jhalakati Sadar and Rajapur upazila, Jhalakati district, Bangladesh.

Start Date: 09-06-2012

End Date: 08-10-2012

Program Area: Farm Mechanization

Commodity: Water management

Objectives:

To find out economically feasible production systems of suitable fish species in pond-dike system for improving sustainable livelihood of poorer farmers living around the low lying areas.

Methodology:

A total of 30 farmers from Jhalokati Sadar and Rajapur upazilla of Jhalakati district were randomly selected. The information on the farm size, land-use patterns, management and socio-economic aspects of the farmers were collected through the interview. Data were also collected from local administrative units viz., Upazila Agriculture Office (UAO) and Upazila Fisheries Office (UFO). Eight interested farmers each having approximately 1500 m² of land for pond-dike system were selected from Jhalakati Sadar and Rajapur upazila of Jhalakati district. The success of integrated pond-dike system (IPDS) relies on the proper use of the following three components (i) construction of pond-dike system, (ii) crop cultivation on the dike, and (iii) pond fish culture in the pond (Lo, 1996). Therefore, the first component was to construct pond-dike system in the low-lying areas of Jhalokati district for integrated crop-fish cultivation. The purpose of the study was to evaluate the growth performance and production of different fish species in monoculture (tilapia and shing) and polyculture (rohu, catla, silver carp, pangus, and grass carp) systems using commercial fish feeds to determine the profitable fish culture technique in pond-dike system in this area. The experiment was conducted in eight earthen ponds of pond-dike system at Jalokathi from 09 June 2012 to 08 October 2012. The ponds were filled with water up to a level of approximately 1.2 m. The ponds were treated with lime at the rate of 0.03kg/ m² and with fertilizer of urea and TSP at a rate of 0.003 and 0.004 kg/ m², respectively. When water turned deep green, fish were stocked at each pond. The fish seeds were collected from Bismillah Hatchery Limited, Jessore for stocking in farmer’s ponds at Jalokathi. The fish seeds were transported to the farm in oxygenated polythene bags covered by jute bags. The fries were released to the culture ponds after sufficient acclimatization. At the time of stocking, 20 fish of each species were weighed in order to record the initial average weight. Specific growth rate (SGR) and Average Daily Growth (ADG) were calculated using the following formula: Hydrological characteristics of ponds, such as water temperature, pH, and dissolved oxygen were determined. At the end of the culture period, the fish from the ponds were completely harvested and the data were recorded. In order to determine statistically significant differences among different treatment means, experimental values were compared using a General Linear Model (GLM). The significance level was set at p<0.05.

Source of Information: Ann. Bangladesh Agric. (2014) 18 (1): 125-133; ISSN 1025-482X.

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Utilizing a pond-dike system in the low lying area is an eco-friendly approach. If pond-dike system is popularized for use in the low lying areas of southern part of Bangladesh, it would increase the incomes of farmers living around the low lying area. It can be concluded that, the pond-dike system could be a new ecological engineering mode for poorer farmers in low lying areas of Bangladesh.

Knowledge Management: Journal