Your search found 8 records
1 Bernardini, F. 2007. A Modern approach to water management: the UNECE protocol on water and health. Law, Environment and Development Journal, 3(2): 234-243.
(Location: IWMI HQ Record No: H041221)
2 Singer, S. F.; Avery, D. T. 2008. Unstoppable global warming: every 1,500 years. Lanham, MD, USA: Rowman & Littlefield Publishers. 278p.
(Location: IWMI-HQ Call no: 363.73874 G000 SIN Record No: H041257)
3 Singer, S. F.; Avery, D. T. 2007. Unstoppable global warming: every 1,500 years. Lanham, MD, USA: Rowman & Littlefield Publishers. 278p.
(Location: IWMI HQ Call no: 551.6 G000 SIN Record No: H041460)
4 Oxley, A. 2007. Building a pro-development global strategy on climate change. Arlington, VA, USA: World Growth. 39p.
(Location: IWMI HQ Call no: e-copy only Record No: H042026)
(0.48 MB)
(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.
(Location: IWMI HQ Call no: e-copy only Record No: H046713)
(1.08 MB)
(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.
8 Liden, R.; Lyon, K. 2014. The hydropower sustainability assessment protocol for use by World Bank clients: lessons learned and recommendations. Washington, DC, USA: World Bank. 46p. (World Bank Water Papers 89147)
(Location: IWMI HQ Call no: e-copy only Record No: H046878)
(1.80 MB) (1.80 MB)
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