Your search found 8 records
1 Abeygunawardena, P.. 1985. An economic model of adaptive irrigation system management: Subsistence farming in Sri Lanka. Unpublished thesis submitted to Texas A & M University, USA. xvi, 204p.
Irrigation management ; Forecasting ; Development policy ; Institutional constraints ; Reservoirs ; Farming ; Water resources ; Analysis / Sri Lanka / Uda Walawe
(Location: IWMI-HQ Call no: 631.7.4 G744 ABE Record No: H02514)
2 Abeygunawardena, P.. Composite forecasting for real-time planning: case of reservoir operation in Sri Lanka. Paper submitted for publication in Journal of Forecasting. 20p.
(Location: IWMI-HQ Call no: P 176 Record No: H03490)
3 Abeygunawardena, P.; Besler, D. A. 1989. Assessment of the green revolution in Sri Lanka: Adaptive regression approach. Indian Journal of Agricultural Economics, 44(2):177-181.
(Location: IWMI-HQ Call no: PER Record No: H05696)
4 Abeygunawardena, P.; Strzepek, K. M.; Bessler, D. A. 1990. Adaptive irrigation management for subsistence farming: An economic model. International Journal of Water Resources Development, 6(2):115-121.
(Location: IWMI-HQ Call no: PER Record No: H06436)
5 Sumanaratne, N.; Abeygunawardena, P.. 1993. An economic evaluation of the salinity problem in Inginimitiya Irrigation Project. In HR Wallingford. Maintenance and operation of irrigation/drainage schemes for improved performance: papers presented to the Asian Regional Symposium held in Beijing, People's Republic of China, 24-27 May 1993. Wallingford, Oxfordshire, UK: HR Wallingford. pp.5:39-50.
(Location: IWMI HQ Call no: 631.7.1 G570 MAI Record No: H012691)
Although irrigation projects have contributed substantially to improve paddy yield in Sri Lanka, most of the large scale projects today are faced with the salinity problem. The objective of this study was to investigate the economic feasibility of correcting the problem of salinity in a selected irrigation project, namely Inginimitiya scheme in the dry zone. The total area under this project is about 2700 ha and each farmer is given about one ha of land to cultivate paddy. Fifteen blocks were selected randomly and field measurements were taken to study the severity of the problem. Two approaches (a) Effect on Productivity and (b) Preventive Expenditure, were used to assess the economic viability of the alternatives to correct this problem. Results indicate that the present value of the losses due to salinity in the project is about Rs.21 million whereas the preventive expenditures are about Rs.15, 28, 14 and 12 million for the four options analyzed. Out of all the options tested, the improvement of the conventional drainage system was found to be the most economical solution in correcting the salinity problem. Therefore future preventive measures for the salinity problem in the Inginimitiya scheme should also include improvement of drainage canals in the operation and maintenance activities.
6 Upasena, J.; Abeygunawardena, P.. 1992. Determinants of farmer participation in irrigation management: The case of Kimbulwana Oya Scheme. Tropical Agricultural Research, 4:271-283.
Irrigation management ; Farmer participation ; Performance evaluation ; Labor ; Irrigation programs ; Policy ; Participatory management ; Case studies / Sri Lanka / Kimbulwana Oya
(Location: IWMI-HQ Call no: IIMI 631.7.3 G744 UPA Record No: H014779)
7 Vidanage, S. P.; Abeygunawardena, P.. 1994. An economic assessment of global warming on agriculture: The case of paddy production in Sri Lanka. Marga, 13(1):33-44.
Economic analysis ; Environmental degradation ; Environmental effects ; Climate ; Rice ; Agricultural policy / Sri Lanka
(Location: IWMI-HQ Call no: PER Record No: H015598)
8 Thiruchelvam, S.; Abeygunawardena, P.; Gunawardena, E. R. N. 1994. An economic analysis of ground-water use for agriculture in the Jaffna District. Tropical Agricultural Research, 6:113-122.
Groundwater extraction ; Recharge ; Water use ; Crop production ; Irrigation requirements ; Mathematical models ; Linear programming ; Optimization ; Economic analysis / Sri Lanka / Jaffna District / Valigamam / Nallur / Keerimalai / Tholpuram / Puttur / Uduvil
(Location: IWMI-HQ Call no: P 4593 Record No: H021414)
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