Kks Womens College

Balasore, India

Kks Womens College

Balasore, India

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Adhikari S.,Indian Central Institute of Freshwater Aquaculture | Sahu B.C.,Aquaculture Division | Mahapatra A.S.,Indian Central Institute of Freshwater Aquaculture | Dey L.,Kks Womens College
Bulletin of Environmental Contamination and Toxicology | Year: 2014

It is important to understand nutrient budgets of aquaculture practices for efficiency of input resources and to utilize all output nutrient sources. The aim of the present study was to develop a nutrient budget for giant freshwater prawn (Macrobrachium rosenbergii) culture ponds. The study was conducted in farmer's ponds (0.25-0.5 ha) of Odisha, India, and the results showed that feed accounted 97 % total nitrogen (N), 98.7 % total phosphorus (P) and 90 % total organic carbon (OC), respectively. The harvested prawn accounted for recovery of 37 % N, 10 % P and 15 % OC, respectively. The N, P and OC accumulated in sediment were 52 %, 76 %, and 65 %, respectively. Nutrient loads in the effluents were 2.22 ± 0.66 kg inorganic N, 0.40 ± 0.15 kg P, and 21.01 ± 6.4 kg OC per ton of prawn production. The present study implicated that high nutrient values observed in both water and sediment provide important opportunities for nutrient reuse through pond sediment applications to croplands as an organic manure, as well as pond water irrigation to crops as a "liquid fertilizer". © 2014 Springer Science+Business Media New York.


Sahu B.C.,Technical Officer | Adhikari S.,Indian Central Institute of Freshwater Aquaculture | Mahapatra A.S.,Indian Central Institute of Freshwater Aquaculture | Dey L.,Kks Womens College
Environmental Monitoring and Assessment | Year: 2013

Experiments were conducted for the study of nutrient budget in ten farmer's ponds (0.2-0.5 ha) in Orissa, India with a mean water depth of 1.0-1.2 m. Scampi (Macrobrachium rosenbergii) were stocked in these ponds at stocking density of 3.75-5.0/m2. The average initial body weight of scampi was 0.02 mg. The culture period was for 4 months. Feed was the main input. Total feed applied to these ponds ranged from 945 to 2261 kg pond/cycle (crop). The feed conversion ratio varied 1.65 to 1.78. In addition to feed, rice straw, urea, and single super phosphate were applied to these ponds in small amounts for plankton production. At harvest time, the average weight of scampi varied from 60-90 g. The budget showed that feed was the major input of nitrogen (N), phosphorus (P), and carbon in these ponds. The inorganic fertilizer (urea and single super phosphate), organic fertilizer (rice straw and yeast extract), and inlet water, either from the initial fills or from rainwater, were the source of all other N, P, and organic carbon (OC) to these ponds. Total N applied to these ponds through all these inputs ranged from 44.45 to 103.98 kg N per crop, 12.23 to 28.79 kg P per crop, and from 381.54 to 905.22 kg OC per crop, respectively. Among all the inputs, feed alone accounted for 95.34 % N, 97.98 % P, and 94.27 % OC, respectively. Recovery of 16.34 to 38.66 kg N (average 29.27 kg), 1.28 to 3.02 kg P (average 2.29 kg), and 63.21 to 149.51 kg OC (average 113.20 kg), respectively, by the scampi harvest were observed in these ponds. Thus, harvest of scampi accounted for recovery of 35.18 to 39.01 (average 36.85 %) of added N, 10.09 to 10.97 (average 10.44 %) of added P, and 7.57 to 17.12 (average 16.34 %) of added OC, respectively. © 2013 Springer Science+Business Media Dordrecht.


Sahu B.C.,Aquaculture Division | Adhikari S.,Indian Central Institute of Freshwater Aquaculture | Dey L.,Kks Womens College
Aquaculture International | Year: 2013

Nutrient budget for shrimp (Penaeus monodon) culture was performed in ten culture ponds (0.4-1.0 ha) in Orissa, India, at stocking density of 10.0-22.10/m2. The average initial body weight of shrimps was 0.02 g. The culture period was for 4 months. Feed was the main input of nitrogen (N), phosphorus (P) and organic carbon (OC). The FCR varied from 1.35 to 1.75. At harvest time, the average weight of shrimps varied from 28 to 32 g. Total N, P and OC applied to these ponds through all the inputs ranged from 106.64 to 292.63, 23.17 to 57.55 kg and 763.10 to 1,831.20 kg per crop, respectively. Feed alone accounted for 94.43-95.03 % total N, 91.92-95.36 % total P and 80.33-92.48 % total OC, respectively. The harvest of shrimp accounted for recovery of 25.45-36.88 (av. 30.12) %, 10.07-12.94 (av. 11.16) % and 15.80-20.81 (av. 18.01) % of added N, P and OC, respectively. N, P and OC accumulated in sediment were 49.11, 64.07 and 64.82 %, respectively, of total nutrient retention in the culture system. Unaccounted N, P and OC were 13.29, 21.83 and 18.14 %, respectively, of the total nutrient retention in the system. N, P and OC outputs in the discharged water during harvest were 7.48, 2.94 and 2.03 %, respectively. © 2012 Springer Science+Business Media B.V.


Adhikari S.,Indian Central Institute of Freshwater Aquaculture | Sahu B.C.,Sahu Aquaculture Division | Dey L.,Kks Womens College
Water Science and Technology | Year: 2012

Experiments were conducted for the study of nutrient budget in farmers' ponds (0.4-0.6 ha) in Orissa, India, at stocking densities of 0.30-0.38/m 2 for scampi (Macrobrachium rosenbergii) and 0.60-0.70/m2 for Indian major carps (Catla catla, Labeo rohita and Cirrhinus mrigala). The average initial body weights of scampi and the major carps were 0.02 and 8-10 g, respectively. The culture period was 272-292 days. Feed was the main input. The FCR (feed conversion ratio) varied from 1.78 to 1.83. Feed and cow dung were applied to these ponds as organic inputs. At harvest time, the average weight of scampi and carps varied from 73 to 92 g and from 718 to 820 g, respectively. Among all the inputs, feed alone accounted for 97.60% total nitrogen (N), 97.90% total phosphorus (P) and 94.72% total organic carbon (OC), respectively. The harvest of scampi and carps accounted for recovery of 52.45% N, 19.43% P and 18.12% OC, respectively. N, P and OC accumulated in sediment were 38.31, 71.40 and 69.50%, respectively. The median nutrient loads in the fish pond effluents were equivalent to 0.58 kg of inorganic N, 0.135 kg of P and 8.83 kg of total OC per ton of Indian major carps and scampi production. © IWA Publishing 2012.


Sahu B.C.,Aquaculture Division | Adhikari S.,Indian Central Institute of Freshwater Aquaculture | Mahapatra A.S.,Indian Central Institute of Freshwater Aquaculture | Dey L.,Kks Womens College
Journal of Applied Aquaculture | Year: 2015

A nutrient budget was quantified for six polyculture ponds of giant freshwater prawn (Macrobrachium rosenbergii) and Indian major carps (Catla catla, Labeo rohita, and Cirrhinus mrigala). The initial stocking size of prawn postlarva was 16.50 ± 0.54 mm with a body weight of 0.05 ± 0.001 g. Body weight of major carps was 9.0 ± 0.89 g. The duration of culture was 280 days. Feed accounted for 82% of total nitrogen (N), 93% of total phosphorus (P), and 95% of organic carbon (OC) inputs. Harvest of prawn and carps recovered 44% N, 1% P, and 19% OC. N, P, and OC accumulated in sediment were 47%, 73%, and 69%, respectively. Nutrient load in the harvest water was 0.67 ± 0.21 kg inorganic N, 0.15 ± 0.01 kg P, and 7.72 ± 0.62 kg OC per ton of Indian major carps and prawn. Copyright © Indian Council of Agricultural Research-Central Institute of Freshwater Aquaculture.

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