Your search found 9 records
1 Groenfeldt, D.; Moragoda, R.; Ekanayake, R. 1987. Farmers' management participation in two irrigation systems. Paper presented at the 43rd Annual Meeting of the Sri Lanka Association for the Advancement of Science, Colombo, Sri Lanka, 9 December 1987. 9p.
Irrigation systems ; Irrigation management ; Farmer participation ; Farmer-agency interactions / Sri Lanka / Dewahuwa / Kalankuttiya
(Location: IWMI-HQ Call no: IIMI 631.7.3 G744 GRO Record No: H003033)
(0.61 MB)
2 Ekanayake, R.; Groenfeldt, D. 1990. Organizational aspects of improved irrigation management: an experiment in Dewahuwa Tank, Sri Lanka. Colombo, Sri Lanka: International Irrigation Management Institute (IIMI). vi, 37p. (IIMI Working Paper 017)
Irrigation management ; Organizations ; Tank irrigation ; Farmer-agency interactions ; Water allocation ; Rotation ; Diversification ; Crops / Sri Lanka / Dewahuwa
(Location: IWMI HQ Call no: IWMI Record No: H006329)
This report is one of several IIMI publications addressing the issue of irrigation management to promote diversified crops during the dry season. As Sri Lanka approaches self-sufficiency in rice production, a target already achieved by some other countries in the region, there is little logic in growing rice using land and water resources which could support higher- value non-rice crops, using less water. Thus, one of the incentives in improving irrigation management is to find ways of stretching water further during the dry season in water-deficit systems, when rice is relatively more expensive to grow than during the wet season, and when other crops which can be grown only during the dry season (when there is less danger of water-logging) offer the farmer and the country a comparative advantage.
3 Aluwihare, P. B. 1984; 1985. Repairs to the channel system of Dewahuwa Scheme with O & M collection (1984-1985) Unpublished IIMI report. 5p.
(Location: IWMI-HQ Call no: IIMI 631.7.7 G744 ALU Record No: H011419)
4 IIMI. Irrigation Management Group for Crop Diversification; Miranda, S. M.; Panabokke, C. R.; Martin, E.; Groenfeldt, D. J.; Raby, N. 1992. Irrigation management for crop diversification in the North Central Province of Sri Lanka. Colombo, Sri Lanka: International Irrigation Management Institute (IIMI) xix, 193p.
Crops ; Diversification ; Irrigation management ; On farm research ; Water delivery ; Irrigation systems / Sri Lanka / Dewahuwa / Kalankuttiya
(Location: IWMI-HQ Call no: IIMI 631.7.2 G744 IIM Record No: H013319)
(8.87 MB)
5 Sakthivadivel, R.; Merrey, D. J.; Fernando, N. 1993. Cumulative relative water supply: a methodology for assessing irrigation system performance. Irrigation and Drainage Systems, 7(1):43-67.
Relative water supply ; Irrigation systems ; Irrigation management ; Performance evaluation ; Paddy fields ; Water delivery performance ; Distributary canals / Sri Lanka / Kirindi Oya / Uda Walawe / Kalankuttiya / Dewahuwa
(Location: IWMI HQ Call no: PER Record No: H013372)
(1.39 MB)
This paper discusses the usefulness and limitations of using the concept of Relative Water Supply (RWS) for evaluating the performance of irrigation systems, with special reference to systems irrigating rice. It then describes and demonstrates the use of a modification of RWS called Cumulative Relative Water Supply (CRWS), which can be used in conjunction with RWS. The advantage of CRWS is that it provides a measure of the cumulated RWS throughout a season, both in absolute terms at any given time, and in terms of the overall seasonal trend. It allows comparison of performance of an irrigation system or subsystem both to the target, and to other systems or subsystems. It can therefore be used both as an analytical tool by researchers, and as an operational tool by managers. The use of CRWS in conjunction with RWS is illustrated with examples from Sri Lanka.
6 Upasena, W. J. J.; Abegunawardana, P. 1993. Economic value of irrigation water in Dewahuwa Irrigation Scheme. In Jayasekera, A. A. (Ed.), Tropical agricultural research. Vol.5, 1993: Proceedings of the 5th Annual Congress of the Postgraduate Institute of Agriculture, Peradeniya, 4-5 November 1993. Peradeniya, Sri Lanka: PGIA. pp.181-193.
Economic aspects ; Irrigation water ; Irrigation programs ; Water costs ; Cost recovery / Sri Lanka / Dewahuwa
(Location: IWMI-HQ Call no: 630.72 G744 JAY, IIMI 631.7.4 G744 UPA Record No: H018225)
7 Ekanayake, R. 1989. Communication in irrigation management: Review of communication practices within the framework of Irrigation Management Division (IMD), based on Dewahuwa study , Yala 1987. Unpublished research report, Postgraduate Institute of Agriculture, University of Peradeniya, Peradeniya, Sri Lanka. 11p.
Irrigation management ; Farmer participation ; Farmer-agency interactions ; Communication ; Irrigation programs ; Tank irrigation ; Decision making ; Planning ; Institutions / Sri Lanka / Dewahuwa
(Location: IWMI-HQ Call no: P 4500 Record No: H020509)
8 Panabokke, C. R. 1989. Irrigation management for crop diversification in Sri Lanka: a synthesis in current research. Colombo, Sri Lanka: International Irrigation Management Institute (IIMI). xv, 54p. (IIMI Country Paper Sri Lanka 3)
Irrigation management ; Crop yield ; Diversification ; Farmer-agency interactions ; On-farm research ; Water delivery ; Water supply ; Weirs ; Communication / Sri Lanka / Dewahuwa / Kalankuttiya / Mahaweli Project
(Location: IWMI HQ Call no: IIMI 631.7.3 G744 PAN Record No: H005714)
The need to understand the technical and socioeconomic constraints in irrigation management for diversified cropping underlies this study. The main constraints identified include the unreliability and inequality of supply at the secondary and tertiary levels of the irrigation system, the lack of organization and management for sharing water below the secondary level, and the poor communication between agency staff and farmers in water delivery scheduling. Intervention studies have shown that flow measurements combined with regularly scheduled rotations and regular meetings between agency staff and farmers can enhance the management capacity of both. Because of the greater economic risks faced by farmers in growing non-rice crops as compared to rice, an assured market and a competitive price are indispensable for promoting diversified cropping.
9 Imbulana, K. A. U. S.; Merrey, D. J. 1995. Impact of management interventions on the performance of five irrigation schemes in Sri Lanka. Colombo, Sri Lanka: International Irrigation Management Institute (IIMI) xiv, 76p. (IIMI Working Paper 035) [doi: https://doi.org/10.5337/2013.034]
Irrigation programs ; Performance evaluation ; Irrigation management ; Intervention ; Irrigation systems ; Monitoring ; Performance indexes ; History ; Farmers associations ; Farmer participation ; Farmer-agency interactions ; Communication ; Organizations ; Water potential ; Rice ; Crop yield ; Water supply ; Land productivity ; Rain ; Data collection / Sri Lanka / Dewahuwa / Mapakada / Parakrama Samudra / Rajangane / Ridiyagama
(Location: IWMI-HQ Call no: IIMI 631.7.8 G744 IMB Record No: H017609)
This working paper is the outcome of a data collection process initiated under the advice of Dr. Shigeo Yashima of the International Irrigation Management Institute (IIMI). The objective of this data collection process was to make a preliminary assessment of irrigation performance in Sri Lanka using irrigation systems with different backgrounds to identify areas for further research.
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