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An Understanding on the Feasibility of Aquaponics in Intensive Aquaculture Pond

Partha Sarathi Das
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. Mahfujul Haque
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. Mehedi Alam
Department of Fisheries Technology, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Shamima Akter
Department of Fisheries Management, Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M. Ruhul Amin
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The study was conducted in a peri-urban village named, Panchpy under Gafargaon upazila of Mymensingh district with stinging catfish (Heteropneustes fossilis ) and carps ponds to produce aquaponics vegetable kolmi (water spinach, Ipomoea aquatica) towards using waste substances of intensive stinging catfish ponds. Aquaponic plant (water spinach, Ipomoea aquatica) was grown in floating trays in the selected ponds. The water quality parameters including, temperature, pH, dissolved oxygen, nitrite and ammonia were measured during study period.The level of ammonia was higher in catfish pond compared to carps pond water. Inversely, the dissolved oxygen content of catfish pond water was lower than that of carps pond. In the stinging catfish pond, the mean value (± SE) of plant length, weight, number of branches and leaves were recorded at 27.67 ± 1.76, 62.67 ± 2.03, 13.00 ± 1.15 and 55.33 ± 3.18, respectively. The corresponding values 19.33 ± 1.45, 46.67 ± 1.86, 9.33 ± 1.45 and 43.00 ± 2.88, respectively in carps pond, were significantly lower than that of catfish pond. Overall the percent weight gain of kolmi was higher in catfish pond. A positive correlation was found between the length and weight of kolmi produced in both catfish and carp ponds, however R² value of that relationship was higher for catfish pond due to higher level of available waste nutrients in water. This indicates that the potential of aquaponics research and development in intensively feed catfish aquaculture ponds at the farmer level that can feed the growing population in both rural and ur ban areas of Bangladesh.

Keywords: Aquaponics, Intensive, aquaculture, Water spinach, Stinging catfish, Carps pond

Location: Gafargaon upazila of Mymensingh district.

Start Date: 00-00-2000

End Date: 00-00-2014

Program Area: Animal Health and Management

Commodity: Cat fish

Objectives:

To determine water quality parameters of intensive stinging catfish ponds where aquaponics system was tested to have an understanding of production performance of an aquaponic plant, water spinach, Ipomoea aquatica , which is called kolmi in Bengali.

Methodology:

The intensive catfish culture (such as Pangasius catfish, stinging catfish) has been developing in all the upazilas of Mymensingh district in different scales. The number of ponds in Gafargaon upazila was 10,259 in 2000 and which was 11,200 in 2014 indicating the steady growth of aquaculture farms in the study area (DoF, 2015). The experiment was conducted in the catfish and carps ponds of Panchpy village at Gafargaon upazila of Mymensingh district. The study site was taken due to having available stinging catfish ponds which is the growing intensive production system of aquaculture and closed proximity of the location to the peri-urban community of Gafargaon upazila town having increasing demand of fish and vegetables regularly. This experiment was carried out in two ponds, one for stinging catfish (locally called shing) culture and other one for carps polyculture. The catfish pond was stocked with shing ( H. fossilis) and koi ( Anabas testudineus ) at the stocking density of 98,800/ha by the farmers as per their common practices. On the other hand, carps culture was carried out at the stocking density of 12, 350/ha as per their traditional practices. This experiment was desinged to assess aquaponics systems comparatively in catfish and carps pond following independent sample T-test, statistically. In each pond, 3 plastic trays each with the size of 0.12 m² were set in catfish pond and similar sized 3 trays were set in carps pond. These two sets of trays were designated as two differenet treatments (T₁ and T₂ ). Four plastic bottles were set with each tray for floating the trays on the pond surfcae. On the floor of each tray , a thick layer of pond sedimnet taking from the same pond was made. In each of the tray, 6 cuttings of kolmi were planted in both of the treatments. Before planting of the cuttings, the weight, number of branches, leaves etc. of an individual cutting were measured. At the end of this experiment, about one month later, the final length, weight, number of branches, leaves etc. of an individual plant were also measured. For determing the growth parameters, length, weight and number of leaves and branches were taken into consideration. The height of kolmi was measured from bottom to the tip of the plants by a centimeter scale. Accordingly, the weight of kolmi was measured by an electronic balance (Model: HKD-620AS-LED) in grams. The number of leaves and branches of kolmi was recorded manually based on eye observation. The recorded data were entered into the spreadsheet in MS Excel 2010 and then summarized properly before ststistical anslysis. After entering the data, the descriptive statistical analyses were done by MS Excel. The inferential T-test was carried out using SPSS (Ststistical Package for Social Sciences) version 16.

Source of Information: Agric. Livest. Fish. Vol. 2, No. 1, April 2015: 143-150

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Aquaculture industry is now contributing to increasin g demand of animal protein along with livelihoods of millions of people but full potential of aquaculture has not been realized yet and further development is required to keep up demand for nutrition from various sources. This study proved that floating aquaponics system could be developed in the intensive aquaculture ponds in Bangladesh to ensure production of nutrient rich fish and micro-nutrient rich vegetables in the balanced environmental condition of ponds. Further large-scale research works need to be carried out to design and construct proper floating aquaponics system with appropriate ratio of pond area so that maximum waste materials could be minimized.

Knowledge Management: Journal