Your search found 15 records
1 De Silva, C. S.. 1993. A preliminary study on agro-wells in hard rock aquifer, with special reference to well performance. 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.17-28.
(Location: IWMI-HQ Call no: 630.72 G744 JAY Record No: H018222)
2 de Silva, C. S.. 1995. Drip irrigation with agrowells for vegetable production in Sri Lanka. In Lamm, F. R. (Ed.), Microirrigation for a changing world: Conserving resources/preserving the environment: Proceedings of the Fifth International Microirrigation Congress, Hyatt Regency Orlando, Orlando, Florida, April 2-6, 1995. St. Joseph, MI, USA: ASAE. pp.949-954.
Drip irrigation ; Wells ; Vegetables ; Crop production ; Crop yield ; Water use efficiency ; Groundwater extraction ; Pumping ; Case studies / Sri Lanka / North Western Province
(Location: IWMI-HQ Call no: 631.7 G000 LAM Record No: H018969)
3 de Silva, C. S.. 1997. Low cost drainage for alleviating water logging problem in irrigation projects of Sri Lanka. In ICID, 7th ICID International Drainage Workshop, "Drainage for the 21st century," 17-21 November 1997, Penang, Malaysia - Proceedings, volume 2: Policy issues and strategies, planning, design and construction. Malacca, Malaysia: Malaysian National Committee on Irrigation and Drainage (MANCID) pp.P24:1-12.
Irrigation programs ; Drainage ; Waterlogging ; Models ; Simulation ; Monitoring ; Groundwater ; Soil moisture ; Water balance / Sri Lanka / Mahaweli Project
(Location: IWMI-HQ Call no: ICID 631.62 G000 ICI Record No: H022798)
4 de Silva, C. S.; Weatherhead, K.; Rushton, K. R. 1996. Sustainability of agrowell irrigation on hardrock aquifers of Sri Lanka. In Peiris, C. N. (Ed.), Tropical agricultural research. Vol.8, 1996: Proceedings of the 8th Annual Congress of the Postgraduate Institute of Agriculture, Peradeniya, Sri Lanka, 21-22 Nov. 1996. Peradeniya, Sri Lanka: PGIA. pp.163-174.
Groundwater irrigation ; Wells ; Pumping ; Aquifers ; Sustainability ; Simulation models / Sri Lanka / Kurunegala District
(Location: IWMI-HQ Call no: 630.72 G744 PEI Record No: H023275)
5 de Silva, C. S.. 1997. Groundwater regulation through design of agrowell dimensions in the hard-rock aquifer: A case study in the North Western Province of Sri Lanka. In Kumaragamage, D. (Ed.), Tropical agricultural research. Vol.9, 1997 Peradeniya, Sri Lanka: PGIA. pp.288-301.
Wells ; Design ; Computer models ; Groundwater management ; Aquifers ; Recharge ; Villages ; Case studies / Sri Lanka / Kobeigana
(Location: IWMI-HQ Call no: 630.72 G744 KUM Record No: H023279)
6 de Silva, C. S.. 2000. Development of guidelines for efficient use of agro-wells. In Samad, M.; Wijesekera, N. T. S.; Birch, A. (Eds.). Status and future direction of water research in Sri Lanka: proceedings of the National Conference held at the BMICH, Colombo, Sri Lanka, 4-6 November, 1998. Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.39-47.
Groundwater management ; Sustainability ; Recharge ; Wells ; Groundwater extraction ; Computer models / Sri Lanka / Kobeigana
(Location: IWMI HQ Call no: IWMI 333.91 G744 SAM Record No: H023550)
(0.49 MB)
7 de Silva, C. S.; Fernando, N.; Sakthivadivel, R.; Merrey, D. 1999. Managing groundwater in hard-rock areas through agro-well design and development. International Journal of Water Resources Development, 15(3):333-348.
Groundwater management ; Groundwater extraction ; Recharge ; Aquifers ; Wells ; Supplementary irrigation ; Water storage ; Watersheds ; Hydrology / Sri Lanka / Huruluwewa
(Location: IWMI-HQ Call no: PER, IIMI 631.7.6.3 G744 DES Record No: H024538)
8 De Silva, C. S.; Weatherhead, E. K.; Knox, J. W.; Rodriguez-Dias, J. A. 2007. Predicting the impacts of climate change: A case study of paddy irrigation water requirements in Sri Lanka. Agricultural Water Management, 93(1-2):19-29.
(Location: IWMI HQ Call no: PER Record No: H040526)
(1.29 MB)
9 Amarasinghe, S. R; De Silva, C. S.. 2006. Water quality assessment of agro wells in Vavuniya District for the use of agricultural and domestic purposes. In Dayawansa, N. D. K. (Ed.). Water resources research in Sri Lanka: symposium proceedings of the Water Professional’s Day 2006, Postgraduate Institute of Agriculture, University of Peradeniya, Sri Lanka, 1 October 2006. Peradeniya, Sri Lanka: University of Peradeniya. Postgraduate Institute of Agriculture (PGIA). pp.41-54.
Wells ; Water quality ; Groundwater ; Analytical methods / Sri Lanka / Vavuniya District / Thandikulum / Kurumakadu
(Location: IWMI HQ Call no: 631.7 G744 DAY Record No: H040723)
10 De Silva, C. S.. 2006. Impact of climate change on potential soil moisture deficit and its use as a climate indicator to forecast irrigation need in Sri Lanka. In Dayawansa, N. D. K. (Ed.). Water resources research in Sri Lanka: symposium proceedings of the Water Professional’s Day 2006, Postgraduate Institute of Agriculture, University of Peradeniya, Sri Lanka, 1 October 2006. Peradeniya, Sri Lanka: University of Peradeniya. Postgraduate Institute of Agriculture (PGIA). pp.79-90.
Climate change ; Soil moisture ; GIS ; Forecasting ; Water demand ; Irrigation water ; Rain / Sri Lanka
(Location: IWMI HQ Call no: 631.7 G744 DAY Record No: H040725)
11 De Silva, C. S.; Weatherhead, E. K. 2006. Spatial impacts of climate change on irrigation need for Maha season paddy cultivation in Sri Lanka. In Dayawansa, N. D. K. (Ed.). Geo-informatics for environmental conservation and management: proceedings of the Third National Symposium on Geo-Informatics, 25 August 2006. Peradeniya, Sri Lanka: Geo-Informatics Society of Sri Lanka (GISSL) pp.101-112.
Irrigation requirements ; Rice ; Climate change ; Rain ; Evapotranspiration ; GIS ; Remote sensing ; Mapping / Sri Lanka
(Location: IWMI HQ Call no: 526.0285 G570 DAY Record No: H040862)
12 De Silva, C. S.. 2006. Impacts of climate change on water resources in Sri Lanka. In Water, Engineering and Development Centre (WEDC). Sustainable development of water resources, water supply and environmental sanitation: 32nd WEDC International Conference, Bandaranaike Memorial International Conference Hall, Colombo, Sri Lanka, 13th - 17th November 2006. Preprints. Leicestershire, UK: Water, Engineering and Development Centre (WEDC) pp.502-508.
Water resources ; Climate change ; Rain ; Temperature ; Environmental temperature ; Evapotranspiration ; Soil moisture / Sri Lanka
(Location: IWMI HQ Call no: 333.91 G000 WAT Record No: H041046)
(0.83 MB)
13 De Silva, C. S.; Weatherhead, E. K. 1997. Optimising the dimensions of agrowells in hard-rock aquifers in Sri Lanka. Agricultural Water Management, 33:117-126.
Wells ; Aquifers ; Irrigated farming ; Soil water balance ; Recharge ; Groundwater ; Models ; Case studies / Sri Lanka / North western province
(Location: IWMI HQ Call no: e-copy only Record No: H044308)
(0.51 MB)
A case study was conducted into the use of large diameter wells (agrowells) for supplementary irrigation from the hard-rock aquifer in the North-Western province of Sri Lanka. Two existing models, a radial groundwater How model and a soil water balance, were used together to represent the agrowell irrigation system. A technique is described to optimise new agrowell systems by deciding the optimum well radii for given aquifer characteristics and well spacing, or to optimize existing agrowell systems by deciding the sustainable irrigable command areas.
14 Thushyanthy, M.; de Silva, C. S.. 2010. Sensitivity of crop and soil parameters in estimation of groundwater recharge using an improved soil moisture balance method. Journal of Dry Zone Agriculture, 1(1):44-58.
(Location: IWMI HQ Call no: e-copy only Record No: H044357)
(0.93 MB)
15 De Silva, C. S.. 2014. Impact of climate change on water resources management in Sri Lanka. Soba Parisara Prakashanaya, 23(1):24-28.
Climate change ; Water resources ; Water management ; Models ; Rain ; Temperature ; Soil moisture ; Runoff ; Wetlands ; Arid zones / Sri Lanka / Kandy / Nuwara Eliya / Ratnapura / Vavuniya / Anuradhapura / Batticaloa / Trincomalee / Colombo / Galle
(Location: IWMI HQ Call no: P 8152 Record No: H046656)
(1.32 MB)
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