Your search found 5 records
1 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)
2 Damayanthi, M. K. N.; Nanayakkara, V. K. 2008. Impact of the provincial council system on the smallholder agriculture in Sri Lanka. Colombo, Sri Lanka: Hector Kobbekaduwa Agrarian Research and Training Institute (HARTI). 156p. (HARTI Research Study 126)
Smallholders ; Agricultural development ; Irrigation ; Decentralization ; Legal aspects ; Institutions ; Land administration ; Agricultural research ; Livestock ; Farmers / Sri Lanka / North western Province / North eastern Province / Uva Province / Southern Province
(Location: IWMI HQ Call no: 630 G744 DAM, e-copy SF Record No: H043792)
(0.37 MB)
3 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.
4 Wickramasinghe, W. 2013. Change in other field crop cultivation in the North western province. Colombo, Sri Lanka: Hector Kobbekaduwa Agrarian Research and Training Institute (HARTI). 47p. (HARTI Research Report 160)
Field crops ; Cultivation ; Farming systems ; Food crops ; Crop production ; Cereals ; Vegetables ; Diversification ; Economic aspects ; Farmers ; Case studies / Sri Lanka / North Western Province / Kurunegala / Puttalam
(Location: IWMI HQ Call no: 633 G744 WIC Record No: H046594)
(0.30 MB)
5 Randeniya, A.; Radhakrishnan, M.; Sirisena, T. A. J. G.; Masih, I.; Pathirana, A. 2022. Equity - performance trade-off in water rationing regimes with domestic storage. Water Supply, 22(5):4781-4797. [doi: https://doi.org/10.2166/ws.2022.188]
Water supply ; Water storage ; Domestic water ; Equity ; Water scarcity ; Water security ; Water resources ; Storage tanks ; Water availability ; Hydraulic models ; Households / Sri Lanka / North Western Province / Puttalam / Kakkapalliya Water Supply Scheme
(Location: IWMI HQ Call no: e-copy only Record No: H051517)
https://iwaponline.com/ws/article-pdf/22/5/4781/1076534/ws022054781.pdf
https://vlibrary.iwmi.org/pdf/H051517.pdf
https://vlibrary.iwmi.org/pdf/H051517.pdf
(0.90 MB) (916 KB)
Water rationing contributes to inequalities in the water supply. Household storage tanks complicate the performance and the hydraulic modelling of these systems. Rationing is often not based on insights into system performance and fails to achieve equity and the operators struggle to explain the rationing tactics to the stakeholders. Understanding the behaviour of water networks rationed regularly is essential to resolve the supply inequalities. We present a contextual analytical framework for understanding and managing water rationing based on the duration of supply (cycle time), rationing fraction (duration of non-supply) and domestic storage to analyse the equity and performance in the water network. The framework was tested using a model of a distribution network in Kakkapalliya, Sri Lanka, under different rationing schemes. The results show that large household tanks create inequities, which can be reduced through a trade-off by increasing the cycle-time of the rationing with a minor reduction in performance. Very small or non-existent domestic storage also negatively impacts the performance and equity of stressed water networks. Resolution of supply inequalities can be achieved through the trade-off between equity and performance is possible through the operation of the water network and by the regulation of domestic storage in water rationing regimes.
Powered by DB/Text WebPublisher, from
