Your search found 5 records
1 Mohanty, R. K.; Mishra, Atmaram; Panda, D. K.; Patil, D. U.. 2015. Effects of water exchange protocols on water quality, sedimentation rate and production performance of Penaeus monodon in earthen ponds. Aquaculture Research, 46(10):2457-2468. [doi: https://doi.org/10.1111/are.12404]
Aquaculture ; Water use ; Water quality ; Water productivity ; Water balance ; Sedimentation ; Penaeus monodon ; Ponds ; Environmental aspects ; Biomass
(Location: IWMI HQ Call no: e-copy only Record No: H046421)
This study was carried out in farmers’ fields to quantify the total water and consumptive water use in grow-out culture of Penaeus monodon under recommended package of practice with two different water management protocols: T1, with no water exchange and T2, with regulated water exchange. Treatment-wise estimated total water use, was 2.09 and 2.43 ha-m 122 day 1, while the computed consumptive water use index (m3 kg 1 biomass) was 5.35 and 6.02 in T1 and T2 respectively. Lower rates of water exchange (T2) showed significantly improved (P < 0.05) crop performance in terms of performance index (19.75 0.75), production-size index (74.1 3.4), survival rate (80.13 1.7%) and productivity (2.44 0.08 t) over the zero water exchange. The shrimp pond water quality suitability index (WQSI) infers that regulated water exchange (T2) improved the overall suitability of water quality for shrimp culture. WQSI up to 90 days of culture ranged between 7.5–9.0 in T2, needs little management while in the last month of rearing, it was good with moderate management requirements. Treatment-wise sediment load ranged between 50.4–56.3 m3 t1 shrimp biomass. High intensity of water exchange and low apparent feed conversion ratio influenced in lowering the sedimentation rate. Regulated water exchange protocol (T2) performed well (higher net total water productivity and net consumptive water productivity) against no water exchange (T1). A higher OV:CC ratio (ratio of the output value to the cost of cultivation) indicated that T2 had a distinct edge over the T1 protocol.
2 Mohanty, R. K.; Mishra, Atmaram; Patil, D. U.. 2014. Water budgeting in black tiger shrimp penaeus monodon culture using different water and feed management systems. Turkish Journal of Fisheries and Aquatic Sciences, 14:487-496. [doi: https://doi.org/10.4194/1303-2712-v14_2_20]
Aquaculture ; Penaeus monodon ; Shrimp culture ; Feeds ; Water budget ; Water use ; Water quality ; Water management ; Protocols ; Ponds ; Sediment
(Location: IWMI HQ Call no: e-copy only Record No: H046712)
(0.42 MB)
We quantify the total water use (TWU) and consumptive water use index (CWUI) in grow-out culture of Penaeus monodon at different water and feeding management protocols using the water balance equation. Under two different water management protocols, treatment-wise TWU, was 2.09 and 2.43 ha-m 122 d-1 in T1 (no water exchange) and T2 (water exchange on ‘requirement’ basis depending on water quality), respectively. The computed CWUI (m3 kg-1 biomass), was 5.35 and 6.02 in T1 and T2, respectively. Lower rates of water exchange (T2) showed significantly improved water quality, crop performance and productivity over the zero water exchange protocol. Similarly, under three different feed management protocols, treatment-wise estimated TWU was 2.52, 2.44 and 2.41 ha-m 119d-1, while the computed CWUI was 7.28, 6.88 and 6.34 in T1 (Regular feeding, 4-times a day), T2 (2-weeks feeding followed by 1-week no feed) and T3 (4-weeks feeding followed by 1-week no feed), respectively. Higher the feed input, higher was the TWU and CWUI. It was also recorded that longer the refeeding period, higher was the growth performance and yield as in the case of T3. This feeding practice also helped in lowering the feed input (7.5% in T2 and 5.5% in T3), thus minimizes the input cost and improve production efficiency.
3 Mohanty, R. K.; Kumar, A.; Mishra, Atmaram; Panda, D. K.; Patil, D. U.. 2014. Water budgeting and management: enhancing aquacultural water productivity. Orissa, India: Indian Council of Agricultural Research. Directorate of Water Management. 70p. (Research Bulletin 63)
Water budget ; Water management ; Water productivity ; Water quality ; Aquaculture ; Fish culture ; Shrimp culture ; Farming ; Sediment ; Feeds ; Protocols ; Nutrients ; Salinity ; Ponds ; Economic aspects / India
(Location: IWMI HQ Call no: e-copy only Record No: H046713)
(1.08 MB)
4 Mishra, Atmaram; Sharma, C. S.; Panda, S. N.; Jena, S. K.; Patil, D. U.; Panda, D. K.; Kumar, A. 2014. Flood induced land use land cover changes and river dynamics assessment in Gujarat state, India. Orissa, India: Indian Council of Agricultural Research. Directorate of Water Management. 52p. (Research Bulletin 68)
Flooding ; Land use ; Land cover ; Satellite imagery ; Vegetation ; Geomorphology ; Drainage ; Remote sensing ; GIS ; Rivers ; Assessment / India / Gujarat
(Location: IWMI HQ Call no: e-copy only Record No: H046714)
(85.60 MB)
5 Mohanty, R. K.; Mishra, Atmaram; Panda, D. K.; Patil, D. U.. 2016. Water budgeting in a carp-prawn polyculture system: impacts on production performance, water productivity and sediment stack. Aquaculture Research, 47(7):2050-2060. [doi: https://doi.org/10.1111/are.12659]
Water budget ; Water productivity ; Water use ; Water quality ; Water management ; Protocols ; Aquaculture ; Prawns and shrimps ; Production policies ; Performance evaluation ; Sediment / India
(Location: IWMI HQ Call no: e-copy only Record No: H046746)
(0.21 MB)
This study was designed to quantify the total water requirement and consumptive water use in carpprawn polyculture system under different water management protocols, using water balance model. Under different water management protocols, treatment-wise estimated total water use, TWU (9104, m3) was 3.7, 4.6 and 3.9, while the computed consumptive water use index, CWUI (m3 kg 1 biomass) was 6.62, 9.31 and 7.08, in T1 (no water exchange), T2 (periodic water exchange) and T3 (regulated water exchange) respectively. Significantly higher yield (P < 0.05) in both T2 and T3 over T1, was probably due to water exchange that improved the rearing environment. Although intensity of water exchange was more in T2, significant variation (P < 0.05) in overall growth and yield was not recorded between T2 and T3. Treatmentwise sediment load ranged between 54.6 and 71.3 m3 t 1 biomasses. Higher sediment load was recorded at lower intensity of water exchange as well as with higher apparent feed conversion ratio. Higher net total water productivity, net consumptive water productivity and OV-CC ratio in T3 infers that regulated water exchange has a distinct edge over the no water exchange protocol. Restricted water use instead of regular/excess water exchange not only improves the production performance and water productivity, but also helps in lessening the operational pumping cost.
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