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You are here: OUSL / Faculty of Engineering Technology / Dept. of Agricultural and Plantation Engineering

Snr. Prof. (Mrs.) Christina Shanthi De Silva

BSc Agri (Hons) (Peradeniya), MPhil (Peradeniya), PhD (Cranfield, UK)

Senior Professor and Chair of Agricultural and Plantation Engineering

Department of Agricultural and Plantation Engineering
  • Room No 347-Third Floor of Science and Technology Building
  • Office: 0112881323, Ext: 323
  • csdes@ou.ac.lk

Soil and Water Engineering

Groundwater Resources Assessment, Groundwater Quality, Climate change Predictions and Adaptation for climate change impacts on water and agriculture

Director/ Center for Educational Technology and Media-OUSL from Jan 2023-Dec 2024

Head/Department of Agricultural & Plantation Engineering, Faculty of Engineering Technology, The Open University of Sri Lanka from Dec 2006 – Oct 2010

Head/Department of Agricultural & Plantation Engineering, Faculty of Engineering Technology, The Open University of Sri Lanka from Jan 2004 – Oct 2005

Head/Department of Agricultural and Plantation Engineering, Faculty of Engineering Technology, The Open University of Sri Lanka from Jan 1998 -Sep 1999

Acting Head/Department of Agricultural and Plantation Engineering, Faculty of Engineering Technology, The Open University of Sri Lanka from Nov 1995 – Jan 1996

Selected Refereed Journal papers:
  1. T. I. Coner, C.S. De Silva, P.R. Idamekorala and S. De Silva (2024). Evaluating the impact of compound fertilizers on growth performances of Turmeric (Curcuma longa L.) in nursery conditions. Journal of Technology and Value Addition, Volume 6 (1):01-17.
  2. S De Silva, S.D. Hapuararchchi and S. De Silva (2024). Treatments of Plant Diseases and Pests According to Vrikshayurveda Classics: A Review. Journal of Intangible Cultural Heritage, 3(1):14-35.
  3. Pratheeban, C. S. De Silva, A. L. C. Silva and S. De Silva (2024). Effect of nitrogen fertilizer on growth, yield and quality parameters of three sugarcane (Sscchsrum Officinarum L.) varieties. AGRIEAST, 18(1): 16-29.
  4. G.A.D. Kumari, C. S De Silva, T.E. Weerawardena, S. De Silva (2024). Effect of fertilizers on growth and yield of medicinal plant bush type pepper (Piper nigrum L.).  AGRIEAST 18 (2):43-52.
  5. P.D.N. Kumara, C.S. De Silva, H.K.L.K. Gunasekara (2024)Effect of Nitrogen fertilizer and Irrigation levels on Growth and Yield of Radish (Raphanus sativus L.) under increased temperature conditions. Journal of Engineering and Technology (JET). 12(1):20-30.
  6. S. De Silva and H.K.L.K. Gunansekara (2024). Indigenous knowledge to deter elephants damageing crop lands. Journal of Intangible Cultural Heritage. 3(2): 25-38.
  7. M.S.U.M. Attanayake, M. S.A. Banu, C.S De Silva, H.K.L.K. Gunasekara (2024). Mitigating High-Temperature Stress through Organic Manure amendments on the Groth of Lunuwila (Bacopa minnieri (L.) Wettest). Journal of Agriculture and Value Addition. 7(2):71-90.
  8. S De Silva and S. De Silva (2024). Rainwater fro healthy living: Comparison of Ayurveda and modern aspects. Sri Lanka Journal of Multidisciplinary Reserach. 2(1):37-47.
  9. G.A. I Rasanjali, C.S De Silva, L.K.R.R. Jayakody (2023). Effect of Zeba (Super absorbent polymer) to combat the impacts of increased temperature and irrigation interval on growth and yield attributes of Chilli (Capsicum annum). International Journal of Agricultural Sciences. 7 (1):01 – 07.
  10. Saravanan, C.S De Silva, T. Mikunthan (2023). Assessing the suitability of the Vermpirai Water Supply Wells in Thenmaradchi Aquifer in Jaffna Peninsula, Sri Lanka by Analyzing Seasonal Water Quality and Geochemical ParametersJournal of Engineering and Technology of The Open University of Sri Lanka (JET-OUSL), 11(1):1-13.
  11. D. Devadason, C.S. De Silva, S. De Silva and T.E. Weerawardena (2023). Selection of best compound fertilizer amended potting moxture for successful growth of black pepper (piper nigrum L.) hybrid (“Dingirala) nursery plants. Journal of Agriculture and Value Addition. 6(1): 14-28.
  12. C. Dissanayake, C.S. De Silva and K. Hapugoda (2023). Advancement of microcontroller-based fire suppression system for enhanced safety in sugar cane plantations. Journal of Agriculture and Value Addition. 6(2): 88-101.
  13. D. Ariyasena, C. S. De Silva, D.M.D. Dissanayaka, D.A.U.D. Devasinghe (2022). Growth, Physiology, Weed Abundance and Yield in Rice (Oryza
    Sativa L.) Under Three Nutrient Input Systems in the Dry Zone of Sri
    Lanka. Journal of Dry Zone Agriculture, 2022, 8(1): 59 – 87, Faculty of Agriculture, University of Jaffna, Sri Lanka.
  14. M.S.U.M. Attanayake, D.M.S. Duminda , C.S. De Silva (2022). Assessment of soil properties and yield under diverse input systems in Alfisols for rice (Oryza sativa L.) crop Journal of Agriculture and Value Addition, 5(1): 45-60. https://dx.doi.org/10.4038/java.v5i1.34.
  15. K.Weerathunga, C.S De Silva and T G.P. Gunarathne (2022). Tea factory firewood ash as a potential plant nutrient source for higher productivity of
    mature tea in Matara District of Sri Lanka. Journal of Engineering and Technology of The Open University of Sri Lanka (JET-OUSL), 10 (1):16 – 32.
  16. P. Shashika Subhashini, C.S. De Silva and N.R.N Silva (2022). Effect of silicon on quality and nutritional properties of Tomato fruit yield (Lycopersicum esculantum) var. Rajitha grown under water stress condition Journal of Engineering and Technology of The Open University of Sri Lanka (JET-OUSL), 10 (2):24-39.
  17. Gururaj, S. Rajeskanna, C.S De Silva (2022) Use of traditional knowledge in management of Okra mosaic virus in Mullaithivu District of Sri Lanka. VISTAS, 15(2): 1-14. The Open University of Sri Lanka.
  18. H.D.Chamara and C.S De Silva (2021). Issues related to weed control faced by Paddy farmers in Hambantota District of Sri Lanka. VISTAS Journal. 14 (1): 35-49.
  19. Saravanan, C.S. De Silva , T.Mihunthan (2021). Characterization and seasonal variation of intake wells for drinking water at Vadamarachchi Aquifer of Jaffna District in Sri Lanka. Journal of Engineering Technology (JET) The Open University of Sri Lanka. 9(1):15-31.
  20.  Shashika Subhashini, C.S. De Silva and N.R.N Silva (2021). Effect of silicon application on growth and yield of tomato (Lycopersicon esculentum Mill.) Var. Rajitha grown under water stress Journal of Dry zone Agriculture. University of Jaffna.7(1):22-35.
  21. S. Suseema, C.S De Silva and I. Dissanayake (2021). Determination of nitrogen response of promising Rice line (Bw 12-574) (Oryza sativa l.) in Low Country wet zone of Sri Lanka. Journal of Dry zone Agriculture. University of Jaffna. 7(2): 1-20.
  22. V. N. Aiome, C.S. De Silva, S. P. Fernando, , and P.C. J. De Silva (2021). Investigating the potential for Rainwater harvesting and its use as safe potable water in the North Central Province of Sri Lanka. VISTAS Journal. 14 (2): 55-73.
  23. Harees, F. and .S. De Silva (2020) Identification of problems faced by farmers in paddy cultivation in the coastal area of Ampara District in Sri Lanka. VISTAS Journal, Vol 13(1):1-15
  24. Risver, A.S.M., Iqbal, Y.B. and S De Silva (2020). Effect of cultural practices on growth and yield of weedy rice and direct seeded rice population in Malwatta region of Ampara District in Sri Lanka. Journal of Dry Zone Agriculture. University of Jaffna. 6 (1): 70-85.
  25. De Silva, C. S and T.Ariyananda (2020) Groundwater Responses to Artificial Recharge of Rainwater in Badulla District in Sri Lanka. Journal of Dry Zone Agriculture. University of Jaffna.Vol 6(2) 15-29
  26. Amarasinghe, K.I.C., De Silva, C.S. and L.K.R.R.Jayakody (2020) Will Pineapple(Ananas comosus Merr.) be a successful crop with global warming- induced temperature and water stress in Sri Lanka? Journal Engineering and Technology. The Open University of Sri Lanka. Vol 8 (1) 41-60.
  27. De Silva, C.S and T.Ariyananda (2020) Groundwater Responses to Artificial Recharge of Rainwater in Kilinochchi District in Sri Lanka. Journal Engineering and Technology. The Open University of Sri Lanka. Vol 8 (1) 77-101
  28. Amarasinghe, K.I.C., Jayakody, L.K.R.R. and De Silva, C.S. (2020). Adverse effects of climate change-induced temperature and water stress on growth and yield of rice (Oryza sativa L.) variety Suwandel. Sri Lanka Journal of Food and Agriculture 6(2): 15-24. DOI: http://doi.org/10.4038/sljfa.v6i2.85.
  29. Rasanjali, K.G.A.I., De Silva S., L.K.R.R.Jayakody (2020) Influence of super absorbent polymer (ZEBA) on growth, yield of cabbage (Brassica oleracea), and soil water retention under temperature and water stress condition. Journal of Agriculture and Value Addition, 2020, Vol. 3(1): 73–90.
  30. Kumara, R.P.D.N., De Silva, C.S., Gunasekara, K.L.K (2020) Effect of Irrigation and nitrogen fertilization on growth and yield of Capsicum (Capsicum annum) exposed to temperature stress. Journal of Engineering and Technology. The Open University of Sri Lanka. 8 (2) :65-78.
  31. Kumari, O., Sirisena, N. and De Silva, C.S (2019). Impact of Framing Practices on productivity of paddy Cultivation in Minor and major Irrigation Schemes of mahagirilla Agrarian Services Division of Kurunagala District in Sri Lanka. Journal of Dry Zone Agriculture, 2019, 5(1):41-49. ISSN 2012-8673.
  32. Kumara, P.P.D.N., Rasanjali, K.G.A.I and De Silva, C.S (2019). Identification of suitable mulch for Raddish (Raphanus sativus L.) to cope with temperature stress. Journal of Dry Zone Agriculture, 2019, 5(1):17-27.ISSN 2012-8673.
  33. G.A.I. Rasanjali, C.S De Silva and K.D.N. Priyadarshani (2019). Influence of Super Absorbent Polymers (SAPs) on irrigation interval and growth of Black Pepper (Piper Nigrum L.) in Nursery management. OUSL Journal Vol 14 No 1 pp 7-25. DOI: http://doi.org/10.4038/ouslj.v14i1.7458.
  34. G.A.I.Rasanjali, R.P.D.N. Kumara and C.S De Silva (2019). Global warming: Compating temperature a stress with modifications in growth media in Green Leaf Lettuce (Lactuca sativa).  Journal of Engineering and Technology. Vol 7 No 1 pp 22-37. ISSN 2279-2627.
  35. R. Alahakoon, S.N.Weerasuriya and C.S De Silva (2019). Effect of water requirement on growth, yield and peelability of True Cinnamon (Cinnmomum zelancum blume).  Journal of Engineering and Technology Vol 7 No 1 pp75-88.ISSN 2279-2627.
  36. P.D.N. Kumara and C.S De Silva (2019). Efficacy of different mulching material in influencing growth, yield, soil and quality parameters of Ginger (Zingiber officinale Roscoe) cultivated in the Low country Intermediate zone of Sri Lanka. OUSL Journal Vol 14 No 2 (7-29).
  37. Dilshad, H.M.M and De Silva, C.S (2018). Identification of suitable irrigation interval for paddy based on growth and yield to adapt water shortage problem in Ampara district of Sri Lanka. Journal of Engineering and Technology of the Open University of Sri Lank (JET-OUSL), Vol.6, No.2, 2018, pp 13-26.
  38. Dishani, P.T.N., & De Silva, C.S. (2018). Coping strategies of farmers in Major irrigation schemes in Puttlam District to Climate Change impacts. Journal for Faculty of Humanities and Social Sciences, VISTAS, 11 (1) 89-102
  39. Maheswaren, P. and De Silva, C.S. (2018).Impact of irrigation methods and mulches on Chilli (Capsicum annuum )Leaf Curl Complex and yield in Jaffna District of Sri Lanka. Journal of Engineering and Technology of the Open University of Sri Lanka (JET-OUSL) Vol 6, No.2. pp 40-53
  40. Wickramasinghe, S. J. I. S and De Silva, C. S. (2018). Effect of partially burnt paddy husk as a supplementary source of potassium on growth and yield of turmeric (Curcuma longa.L) and soil properties. OUSL Journal Vol 13 (2) 49-64.
  41. Rushton, K. R., De Silva, C. S. (2017). Abstraction Strategies for Irrigation from large diameter wells. Water Resources Management (31:2257–2270) DOI 10.1007/s11269-017-1641-6
  42. Rageendrathas, T. and De Silva, C.S. (2017). Effect of bio-char on growth and yield of onion (allium cepa) and soil properties of Calcic Red Yellow Latasols in Jaffna District. Journal of Engineering and Technology of the Open University of Sri Lanka (JET-OUSL), 5, No.1, 2017, pp 21-35.
  43. Rushton, K.R. and De Silva, C.S. (2016). Sustainable yields from large diameter wells in shallow aquifers. Journal of Hydrology, 539:495-509
  44. Godawatta, V.N.A. and De Silva, C.S. (2016). Impact of different mulches on growth and yield of Red Okra (abelmoschus esculentus) indigenous variety exposed to temperature stress. OUSL Journal Vol 10 (41-57).
  45. Kavish, S., Botheju, W.S. and De Silva, C.S. (2016). Impact of drying temperature in Endless Chain Pressure Dryers on the quality characteristics of leafy type of Tea produced using different leaf standards. OUSL Journal Vol 10 (73-92).
  46. Dishani, P. T. N. and De Silva, S. (2016). Effect of Simulated Temperature and Water Stress on Growth, Physiological and Yield Parameters of Tomato [Lycopersicon esculentum var: Thilina] Grown with Mulch. OUSL Journal Vol 11 (37-51)
  47. Gunawardena, M. D. M. and De Silva, C. S. (2016). Effects of Global Warming Simulated Temperature and Water Stress on Fruit Quality of Tomato (Lycopersicum esculantum) Rajitha. OUSL Journal Vol 11 (93-112).
  48. Koralage, I. S. A.. Weerasinghe, P., Silva, R. N. and De Silva, C. S. (2015). The Determination of Available Phosphorus in Soil: A Quick and Simple Method. OUSL Journal Vol 8 (1-18)
  49. Gunawardena, D.M. and De Silva, C.S. (2015). Impact of induced temperature and water stress on vegetative and reproductive parameters of Tomato (Lycopersicum esculantum) variety Rajitha.  OUSL Journal Vol 8 (19-38).
  50. Gunawardhana, M.D.M.and De Silva, S. (2014). Identifying the impact of temperature and water stress on growth and yield parameters of Chilli (Capscium Annuum L). OUSL Journal, Vol 7, pp 19-34.
  51. De Silva, C.S. (2014). Simulation of potential groundwater recharge from the Jaffna Peninsula of Sri Lanka using HYDRUS-1D model. OUSL Journal, Vol 7 pp 34-51.
  52. Godawatta, V.N.A. and De Silva, C.S. (2014).Effect of mulch on soil properties, growth and yield of Chilli (Capsicum annum L.) exposed to temperature stress due to global warming. Journal of Engineering and Technology of the Open University of Sri Lanka (JET-OUSL)2, No.2, 2014, ISSN 2279-2627 pp15-28
  53. Mikunthan, T. and De Silva, C. S.(2012). Assessment of Groundwater Resources in Jaffna Limestone Aquifer. Journal of Tropical Agricultural Research. Vol.23 (2):177-185.
  54. Gunawardhana, M.D.M.and De Silva, S. (2011). Impact of temperature and water stress on growth, yield and related biochemical parameters of Okra. Journal of Tropical Agricultural Research. Vol. 23 (1):77-83.
  55. De Silva, S. and Rodriguez-Diaz, J. A. (2011). Spatial impacts of climate change on major climatic factors in Sri Lanka. Sabragamuwa University Journal. Vol 10 (1): 60-75
  56. Gunawardhana, M.D.M.and De Silva, S. (2011). Determination of optimum harvesting time for Okra (Abelmoscus Esculentus Var. Haritha) to cope with Temperature and Water Stress due to Global Warming. Sabragamuwa University Journal. Vol 10 (1): 76-89.
  57. De Silva, C.S and Mikunthan, T. (2010) Estimation of aquifer parameters of limestone aquifers- A case study in Thirunelvely and Kondavil of Jaffna District. OUSL Journal, Vol 6, 75-90
  58. Mikunthan, T. and De Silva, 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.
  59. Mikunthan, T. and De Silva, S. (2009). Estimation of groundwater recharge in limestone aquifer using an improved soil moisture balance method: A case study in Jaffna district. Journal of Tropical Agricultural Research.21 (1):51-61.
  60. Mikunthan, T. and De Silva, S. (2008). Vulnerability assessment for shallow aquifers using chemical quality of groundwater: A case study from Thirunelvely and Kondavil in Jaffna District. Journal of Tropical Agricultural Research, University of Sri Lanka, Vol 20: 303-312.
  61. De Silva, C.S. and Rushton, K.R. (2008). Representation of rainfed valley rice fields using a soil-water balance model. Journal of Agricultural Water Management. Elesvier publications. Science Direct. 95 (271-282).
  62. De Silva, C.S., Weatherhead, E.K., Knox, J.W. and Rodrihuez-, J.A. (2007). Predicting the impacts of climate change-A case study of paddy irrigation water requirements in Sri Lanka. Journal of Agricultural Water Management 93(2007)19-29. Elsevier Publishers, Amsterdam, Netherlands.
  63. De Silva, C.S and , K.R. (2007). Groundwater recharge estimation using improved soil moisture balance methodology for a tropical climate with distinct dry seasons. Journal of Hydrological Sciences, 52 (5) 1051-1067. IAHS Press. S.A.
  64. De Silva, C.S and Hohne, S. (2005). Groundwater Vulnerability assessment and protection measures-An example from Sweden. Journal of National Science Foundation, Sri Lanka, 34(1):43-51. Sri Lanka
  65. De Silva, C.S. (2002). Sustainable groundwater resource management in the Thirappane Tank Cascade System. Journal of National Science Foundation, 30(3&4): 97-108
  66. De Silva, C.S., Fernando, N., Sakthivadivel, R. and Merry, D. (1998). Managing groundwater in hard-rock areas through agro-well design and development. International Journal of Water Resources Development, Vol. 15. No 3, 333-348.
  67. De Silva, C.S. (1997). Groundwater regulation through design of agro well dimensions in the North-Western Province of Sri Lanka. Journal of Tropical Agricultural Research, 9:288-301
  68. De Silva, C.S., Weatherhead. and Rushton. K.R. (1996). Sustainability of Agro well irrigation on hard rock aquifers of Sri Lanka. Journal of Tropical Agricultural Research, 8:163-174
  69. De Silva, C.S. and Rushton, K.R. (1996). Interpretation of the behaviour of agro well systems in Sri Lanka using radial flow models. Journal of Hydrological Sciences, 41(6) 825-835.
  70. De Silva, C.S and Weatherhead, K. (1996). Optimising the dimensions of agro wells in hard rock aquifers in Sri Lanka. Journal of Agricultural Water Management, 33:117-126.
  71. De Silva, C.S. (1993). A preliminary study on Agro wells in Hard rock aquifer, with special reference to well performance. Journal of Tropical Agricultural Research, 5: 17-28.
  72. De Silva, C.S., Gunawardena, E.R.N. and Rushton, K.R. (1990). Soil water dynamics related to water logging in a sloping catchment, Journal of Hydrology. 123:179-295.
  • De Silva, C.S. (2000) Agrowells for Drought Mitigation. Publication of National Disaster Management Centre, Ministry of Social Welfare, Sri Lanka (Three books in Sinhala, Tamil, and English)
  • De Silva, C.S. (2004) Livelihood Options for Coping with Drought. Publication of the National Disaster Management Centre, Ministry of Social Welfare, Sri Lanka.
  • De Silva, C.S. (2005). “Mainstreaming Gender in Water Resources Management” Publication of the Network of Women Water Professional and Global Water Partnership, Colombo. Translated and edited the Tamil language book.
  • De Silva, C.S. (2010). A method for forecasting the effects of climate change on groundwater resources in Sri Lanka in the 2050s and for identifying possible adaptation measures. No: 2 Monograph series, The Open University of Sri Lanka, Nawala, Nugegoda.
  • Ariyananda and C.S De Silva (2024). Rainwater Harvesting for Groundwater Recharge: Experience from Sri Lanka. Chapter 15: pp 323-338. In Managed Groundwater Recharge and Rainwater Harvesting-Outlook from Developing Countries. Ed: Dipankar Saha, Karen G. Villholth, Mohamed Shamrukh. Published by Springer.
      1. Samarakkody, P. C., De Silva, C.S. and Weerasinghe, P. (2016). Impact of phosphate fertilizers on soil water pollution and safe food production in Central Highlands of Sri Lanka and possible health hazards. Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day, Post graduate Institute of Agriculture ISBN 978-955-1308-20-9, pp 31-42.
      2. De Silva, C.S. (2015). Shallow Groundwater use through Agro wells in the dry and intermediate zones of Sri Lanka and present health hazards. Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day, Post graduate Institute of Agriculture, ISBN 978-955-1308-20-9, pp 31-42.
      3. De Silva, C.S. (2014). Impact of Climate change on water resources management in Sri Lanka. SHOBA. Environmental Magazine.  Ministry of Environment and Renewable Energy.  Pp 24-28.
      4. De Silva, S. (2014). Rainwater Harvesting as an adaptation measure for the impact of climate change on water resources in the Central Hills of Sri Lanka. Proceedings of the Symposium on “Mainstreaming rainwater harvesting as a water supply option” International Water Management Institute, Battaramulla. 5th September 2014, pp72-79.
      5. De Silva, S. (2013). Impact of climate change on water resources and agriculture in Sri Lanka.  Proceedings of the International Conference on Climate change impacts and adaptations for food and environmental security. Published by Coconut Research Institute, Sri Lanka, Colombo. pp 67-72.
      6. De Silva, S. (2013). Importance of modeling and its feasibility in predicting the future climate in Sri Lanka. . Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day, Post graduate Institute of Agriculture,  Post graduate Institute of Agriculture, ISBN 978-955-1308-18-6, pp 15-28
      7. Anomi, G.V.N. and De Silva, C.S. (2013). Adaptation to temperature stress due to climate change: A study on soil properties, growth and yield of groundnut. Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day, Post graduate Institute of Agriculture, ISBN 978-955-1308-18-6 pp 83-92.
      8. De Silva, S. (2012). Present water crisis in the dry zone of Sri Lanka and climate change impacts on rainfall.  Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day, Post graduate Institute of Agriculture,   ISBN 978-955-1308-17-9 pp 21-30.
      9. De Silva, S. and Tellam, J. (2011). Simulation of Nitrate Leaching and groundwater pollution in vegetable cultivation using HYDRUS -1D model. Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day, Post graduate Institute of Agriculture, University of Peradeniya, ISBN 978-955-1308-14-8. pp 167-178.
      10. Godawatta, V.N.A., De Silva, C.S. and Gunawardhana, M.D.M. (2011). Effect of mulch on growth and yield of Chilli (Capsicum annuum L.) to cope with global temperature stress due to climate change. International Conference on the Impact of Climate Change on Agriculture (ICICCA), University of Ruhuna, Mapalana Kamburupitiya. Dec 20th 2011, pp 95-102
      11. Gunawardhana, M.D.M., De Silva C.S and Godawatta, V.N.A. (2011) Impact of temperature and water stress on growth and yield of selected crops. International Conference on Impact of Climate Change on Agriculture, University of Ruhuna, Mapalana, Kamburupitiya. Dec 20th 2011, pp 150-157.
      12. Mikunthan, T. and De Silva,C. S.(2010). Sources and extent of groundwater pollution in shallow aquifer: A case study from Jaffna district Sri Lanka. C. Sarala (Ed). In: Proceedings of 3rd International Conference on Hydrology and watershed management, India – 2010, pp. 41 – 48.
      13. De Silva, C.S. (2009). Spatial effects of Climate Change on the dry zone of Sri Lanka based on HadCM3 model. Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day, Postgraduate Institute of Agriculture, University of Peradeniya, ISBN 978-955-1308-13-1. pp69-78.
      14. De Silva, C.S. and Amarasinghe, S.R. (2008). Water Quantity Assessment of Agro wells in Vavuniya District. Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day, Postgraduate Institute of Agriculture, University of Peradeniya, pp55-66,  ISBN 955-130-811-7.
      15. Mihunthan, T. and De Silva, S. (2008). Nitrate pollution in Groundwater: A case study in Thirunelvely and Kondavil of Jaffna District. Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day, Postgraduate Institute of Agriculture, University of Peradeniya, Pp 67-77,  ISBN 955-130-811-7.
      16. Mukunthan, T. and De Silva, S. (2007). Preliminary Study on Nitrate contamination in Shallow Aquifers-A case study in Thirunelvely and Kondavil in Jaffna District. Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day, Postgraduate Institute of Agriculture, University of Peradeniya, pp23-32, ISBN 955-1308-09-4
      17. De Silva, C.S. (2007). Impacts of climate change on rainfall runoff and water security in Sri Lanka- Predictions for 2050s. Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day, Postgraduate Institute of Agriculture, University of Peradeniya,   pp183-196,  ISBN 955-1308-09-4
      18. De Silva, C.S. (2006). Impacts of climate change on potential soil moisture deficits and its use as a climate indicator to forecast irrigation need in Sri Lanka. Water Resources Research in Sri Lanka, Proceedings of the Symposium on Water Professionals Day, Postgraduate Institute of Agriculture, University of , pp79-90,  ISBN 955-1308-05-0
      19. De Silva, C.S and Weatherhead, (2006). Spatial impacts of climate change on irrigation need for maha season paddy cultivation in Sri Lanka. Third National Symposium on Geo-Informatics, Central Environment Authority, Colombo. 25 August 2006, pp 101-112, ISBN 955-1308-04-2, Sri Lanka, University of Peradeniya.
      20. Amarasinghe, S.R. and De Silva, S. (2006). Water quality assessment of agrowells in Vavuniya District for the use of Agricultural and Domestic purposes. Water Resources Research in Sri Lanka, Proceedings of the Symposium on Water Professionals Day, Postgraduate Institute of Agriculture, University of Peradeniya,  pp41-54,  ISBN 955-1308-05-0
      21. De Silva, S. and Ariyananda, T. (2006). Impact of Rainfall Runoff harvesting in drought prone areas-A case study in Kotawehara of Sri Lanka. Proceedings of the International Workshop on Rainwater harvesting, 27-29 September 2006, Kandy, Sri Lanka. pp96-102
      22. De Silva, C.S. (2006). Impacts of climate change on water resources in Sri Lanka. 32nd WEDC International Conference on Sustainable Development of water resources, water supply and environmental sanitation, BMICH, Colombo, 13-17th November 2006, pp502-508
      23. De Silva, C.S. and Ayomi, N. (2004). Impact of Intensive vegetable Cultivation on Agro-Well Water Quality in Malsiripura Region of Kurunagala District. Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day, Postgraduate Institute of Sri Lanka, University of Peradeniya, pp121-134
      24. De Silva, C.S. (2003). Importance of Water Balance Studies for Efficient Use of Water Resources in the Tank Cascade Systems of Sri Lanka-A Case Study in Meegassagama. Water Resources Research in Sri Lanka. Proceedings of the Symposium on Water Professionals Day,, Postgraduate Institute of Agriculture, University of Peradeniya, pp55-61
      25. De Silva, C.S. (2002). Regulation of shallow groundwater resources in hard rock areas of Sri Lanka. Proceedings of the Symposium on the Use of Groundwater for Agriculture in Sri Lanka, 30th September 2002, pp 42-52
      26. De Silva, C.S. (2002). Sustainable Shallow Groundwater Resource Management in the Hard Rock Terrain of Sri Lanka. Proceedings of the IESL’s 3rd International Seminar: “The Engineer in Sustainable Social & Economic Development: The Regional Contribution towards Agenda 21”,  19th &20th October 2002, Colombo, pp 115-120
      27. De Silva, C.S. (2001). Efficient use of surface and groundwater in the Tank Cascade System in Sri Lanka.  OUR Engineering Technology of the Open University of Sri Lanka, Vol 6 # 1,  17-20.
      28. De Silva, C.S (2000). Development of guidelines for efficient use of Agro wells. Proceedings of the National Conference on Status and Future Direction of Water Research in Sri Lanka. ISBN 9290903961, 39-48
      29. De Silva, C.S. (1998). Need to increase recharge to the aquifer in Sri Lankan hard rock terrain. Proceedings of the third International Symposium on Artificial Recharge of Groundwater-TISAR 98, Amsterdam, Netherlands, Peters et al. (eds.) Balkema, Rotterdam, ISBN 9058090175, 349-351
      30. De Silva, C.S. (1998). Farmer owned agro-well irrigation in Sri Lanka, OUR Engineering Technology of the Open University of Sri Lanka, Vol 4 #2 13-17.
      31. De Silva, C.S. (1998). Managing harvested rainwater to ensure sustainable irrigation and water security in Drier parts of Sri Lanka. Proceedings of the Symposium on Rain Water harvesting for Water Security, The Open University of Sri Lanka, Nawala, Nugegoda. Vol 4 # 1:26-29.
      32. De Silva, C.S. (1998). Groundwater resources as supplementary irrigation in the dry and intermediate zones of Sri Lanka for drought mitigation. Proceedings of the Workshop on the role R&D Institutions in Natural Disaster Management Colombo, Sri Lanka Vol 1:18.1-18.4
      33. De Silva, C.S. (1997). Groundwater regulation policy in Agro well systems of Sri Lanka. Proceedings of the International Conference on Emerging Trend in Hydrology, Roorkee, India. 1:305-312
      34. De Silva, C.S. (1997). Low cost drainage for alleviating water-logging problem in irrigation projects of Sri Lanka. Proceedings of the International Drainage Workshop, Penang, Malaysia. 2:P24.1- P24.12.
      35. De Silva, C.S. (1997). Modelling of groundwater at the large diameter well system in Sri Lanka with radial flow model. Proceedings of the International Conference on Analytic based modelling of groundwater flow, Nunspeet, The Netherlands, 36-40.
      36. De Silva, C. S. (1996). Impacts of land use on soil erosion in mid-country of Sri Lanka. Proceedings of the International Symposium on Erosion and Sediment Yield, Exeter, UK, 37-39.
      37. De Silva, C.S. (1995). Drip irrigation with agrowells for vegetable production in Sri Lanka. Proceedings of the International Micro Irrigation Congress, Orlando, Florida, S.A. 949-954.
      38. De Silva, C.S. and Weatherhead, K. (1994). The use of large diameter wells (Agrowells) for supplementary irrigation in the dry zone of Sri Lanka. Proceedings of the International Conference on Water Down Under’ 94, Adelaide, Australia. 2B: 595-599.
      39. Gunawardena, E.R.N., Jeyabalasingham, A., De Silva S. and Rushton, K.R. (1990). The use of interceptor drainage technique in alleviating water logging in irrigation systems.  Proceedings of the Symposium on Irrigation and Water Resources, Kandy, Sri Lanka. pp123-138.
      40. Senpeetro, C.S De Silva, G.P. Gunaratne and S.De Silva (2024). Use of Cow urine in Vrikshayurveda to increase the productivity of up-country vegetables in Sri Lanka. International Research Symposium on Traditional Medicine. Pp. 1
      41. H.D. Athukorala, C.S De Silva, R.M.S.M.B. Rathnayaka and S. De Silva (2024). Vrikshayurveda concept of Kunapa Jala as a cost-effective organic fertilizer solution to grow Lactuca sativa (lettuce- Grand rapids). 2nd International Research Symposium on Traditional Medicine. Pp. 2.
      42. M.S.A.Banu, A.M.S.U.M.Attanayake, C.S De Silva and H.K.L.K. Gunasekara (2024). Effect of organic manure and temperature on the growth of Lunuwila (Bacopa monnieri L.) Wettst). 2nd International Research Symposium on Traditional Medicine. Pp. 213.
      43. M. G.S.D. Kumari, C.S De Silva and T.E. Weerawarderna (2024). Effect of straight and compound fertilizers on growth and yield of medicinal plant bush pepper (piper nigrum L.)  2nd International Research Symposium on Traditional Medicine. Pp. 213.
      44. A.M.S.U.M. Attanayake, H.K.L.K. Gunasekara and C.S De Silva (2024). Effect of organic manure in ambient and increased temperature conditions on growth and yield of medicinal plant Ashwagandha (Withania somnifera). 2nd International Research Symposium on Traditional Medicine. Pp. 214.
      45. H.K.B. Wathsala, K.G.A.I. Rasanjali, P. Rajapakse and C.S De Silva (2024). Evaluation of alternative growing medium for enhanced yield of American Oyster mushrooms (Pleurotus ostreatus). Proceedings of the International Research Conference of the Open University of Sri Lanka (IRC-OUSL-2024). p 1.
      46. K. M.T.N.B. Abeykoon and C.S De Silva (2024). Effect of pulling Banana trunk on paddy field as an ecofriendly weed control method in the wet zone of Sri Lanka. Proceedings of the International Research Conference of the Open University of Sri Lanka (IRC-OUSL-2024). p 1.
      47. S.De Silva (2023). Groundwater Recharge using rainwater in the Badulla District of Sri Lanka. The 2nd International Conference of SARNET. Rainwater Harvesting: A Sustainable Solution for Climate Change Resilience and Achieving SDG. Colombo, Sri Lanka. Pp 29.
      48. S.De Silva and S. De Silva (2023). Concept of Vrikshayurveda for increasing the productivity of medicinal plants. 4th International Conference on Intangible Cultural Heritage.University of Sri Jayawardenapura. pp207.
      49. De Silva and K.Gunasekara (2023). Indigenous knowledge to control elephants damaging croplands. 4th International Conference on Intangible Cultural Heritage.University of Sri Jayawardenapura. pp230.
      50. H. C. Dissanayake, K. Hapugoda, C.S. De Silva (2022). Designing microcontroller based accidental fireprotection system for Sugar Cane Plantations. iOURS Proceedings, pg 52.
      51. R.S. Rathnasiri, W.M.N.D. Gunathilaka, M.C. Millavithanachchi, C.S. De
        Silva (2022). Effect of climatic factors on filled grain percentage of rice varieties for cultivation during yala season in the low country wet zone of Sri Lanka. iOURS Proceedings, pg 08.
      52. H M.S.M Bandara, W.L.P.B. Upananda, C.S De Silva (2022). Impact of shrimp farming on degradation of diversity,soil and water quality of mangrove ecosystem in Anawilundawa Ramsar wetland sanctuary. iOURS Proceedings pg 145.
      53. M.S.U.M. Attanayake, D.M.S. Duminda, C. S. De Silva (2021). Assessment of soil properties and yield under diverse cropping systems in alfisols for maize (zea mays l.) crop. Open University Research Sessions 2021. Book of Abstract. pp 7.
      54. M.S.U.M. Attanayake, D.M.S. Duminda, C. S. De Silva (2021). Assessment of soil properties and yield under different input systems in alfisols for Rice (Oryza sativa l.) crop. Open University Research Session 2021. Book of Abstract. pp 8.
      55. P D. Ariyasena, C.S. De Silva, D.A.U.D. Devasinghe, D.M.D. Dissanayake (2021). Growth, physiology, and weed abundance in Rice (Oryza sativa l.) under diverse input systems in the dry zone of Sri Lanka. Open University Research Sessions 2021. Book of Abstract. pp 9.
      56. E M.D. Perera, C.S.De Silva, R.R. Ratnayake (2021). Estimation and mapping soil organic carbon in paddy growing soils of Monaragala district, Sri Lanka. Open University Research Sessions 2021. Book of Abstract. pp 10.
      57. G Devendraguru, S Rajeskann, C.S De Silva (2021). Management of Okra mosaic virus and it vector: okra leaf hoppers (empoasca devastans) through plant extracts. Open University Research Sessions 2021. Book of Abstract. pp 11.
      58. H P.S. Subhashini, N.R.N Silva, C.S. De Silva (2021). Effect of silicon on nutritional quality and yield parameters of Tomato (Solanum lycopersicum) grown under water stress condition. Open University Research Sessions 2021. Book of Abstract. pp 12.
      59. H P.S. Subhashini, N.R.N Silva, C.S. De Silva (2021). Effect of silicon on quality parameters of Tomato (Solanum lycopersicum) in water stress condition. Open University Research Sessions 2021. Book of Abstract. pp 13.
      60. K D.C. Premarathna, M.K.F. Nadheesha, S.S. Udumann , C.S. De Silva (2021). Downward movement of exchangeable potassium and magnesium after long term application of fertilizer under different placement techniques: A case study at Ranawana coconut estate, Kurunegala. Open University Research Sessions 2021. Book of Abstract. pp 20.
      61. I Rathnayaka, C.S. De Silva, S. Maheepala, G. Seneviratne, R. Liyanage (2021). Nutritional properties and hydrolyzing rates of rice grown with Bio -film Bio-fertilizer (bfbf). Open University Research Sessions 2021. Book of Abstract. pp 24.
      62. R P.D.N. Kumara, C.S. De Silva, H.K.L.K. Gunasekara (2021). Influence of different levels of nitrogen fertilizer and irrigation on Radish (Raphanus sativus) under increased temperature condition. Open University Research Sessions 2021. Book of Abstract. pp 29.
      63. R P.D.N. Kumara, C.S. De Silva, H.K.L.K. Gunasekara (2021). Influence of different levels of nitrogen fertilizer and irrigation on Radish (Raphanus sativus) under increased temperature condition. Open University Research Sessions 2021. Book of Abstract. pp 29.
      64. K G.A.I. Rasanjali, C.S. De Silva and L.R.K.K. Jayakody(2021). Effect of super absorbent polymers and different irrigation intervals on growth and yield of Tomato (Lycopersicon esculentum mill) under tempearture stress condition. Open University Research Sessions 2021. Book of Abstract. pp 30.
      65. C S De Silva and T. Ariyananda (2021). Artificial groundwaters recharge using rainwater in Kilinochchi District in Sri Lanka. International Conference on Looming water crisis and climate change in South Asia: Rainwater Harvesting as an adaptation strategy. Accepted for publication.
      66. Rasanjali, K.G.A.I., Kumara, R.P.D.N. and S. De Silva (2020). Foliar application of Methanol for mitigation of temperature stress in Okra plants. Proceedings of the 7th Ruhuna International Science and Technology Conference, University of Ruhuna, Matara Sri Lanka, pp 87.
      67. Athukorale A.N., Senevirathna, G.I., Chathurika, J.A.S., Rathuwadu, N., Gunawardena, M and S De Silva (2020). Application of an electric potential to retain soil nutrients around the root zone of rice (Oryza sativa L.) using carbon electrodes. Proceedings of the 7th Ruhuna International Science and Technology Conference, University of Ruhuna, Matara Sri Lanka, pp 3.Shanika Dilrukshi, Rasanjali, K.G.A.I., De Silva, C.S and L.K. R.R. Jayakody (2020.) Effect of a water saving supper absorbent polymer on irrigation intervals of temperature and water stressed chilli (Capsicum annuum ) plants. Proceedings of the Annual Academic Sessions (OURS) 2020, the Open University of Sri Lanka.
      68. Rasanjali, K.G.A.I., De Silva, C.S and L.K. R.R. Jayakody (2020).Influence of organic based super absorbent polymer (zeba) on growth of Cabbage and soil water content under temperature and water stress condition. Proceedings of the Annual Academic Sessions (OURS) 2020, the Open University of Sri Lanka.
      69. T M.Navarathna, N.R.N. Silva and C.S De Silva (2019). Comparison of efficiencies of Walkey and Black titration method and colorimetric methods for the estimation of soil organic matter in Sri Lanka. Proceedings of the Open University Research Sessions (OURS-2019). Pp 8. ISSN2012-9912.
      70. R P.D.N. Kumara, C.S De Silva (2019). Effect of mulching on nutrient status of Ginger (Zingiber Officinale Roscoe) growing soils in Low Country Intermediate Zone of Sri Lanka. Proceedings of the Open University Research Sessions (OURS-2019). Pp 9. ISSN2012-9912.
      71. Rasanjali K.G.A.I and De Silva, C.S (2019). Effect of super absorbent polymers (SPs) on soil properties to combat water stress in Black peere (Piper nigrum) plants in nursery. Proceedings of the 7th International Conference of Sabaragamuwa University of Sri Lanka (ICSUSL-2019). Pp 173.
      72. Wickramasinghe, S.J.I.S, Kumara, R.P.D.N and De Silva, C.S (2019). Partially burnt Paddy husk as Potassium Supplement to soil for Turmeric (Curcuma Longa L.) cultivation in Sri Lanka (ICSUSL-2019), pp 174.
      73. W N.K. Weragala, K.G.A.I. Rasanjali, R.P.D.N. Kumara and C.S De Silva (2019). Key Purchase Determinants and Consumer Attitudes towards Organic Food Products: Case Study among families of Undergraduate Students in Sri Lanka. Proceedings of the International Research Conference of the Rajarata University of Sri Lanka, pp 65. ISSN2235-9710.
      74. Rasanjali K.G.A.I, Kumara, R.P.D.N and De Silva, C.S (2019). Effect of Different types of mulch and temperature stress on growth and yield of Radish (Raphanas sativus) 7th International Conference of Sabaragamuwa University of Sri Lanka (ICSUSL-2019). Pp 180.
      75. Rasanjali K.G.A.I, Kumara, R.P.D.N and De Silva, C.S (2019).Global Warming: Combating Temperature stress on Green Leaf Lettuce (Lactuca Sativa) plants by modifying growth media. 7th International Conference of Sabaragamuwa University of Sri Lanka (ICSUSL-2019). Pp 181.
      76. A G. Firnas Harees, M.F.A.Zaneer and C.S De Silva (2019). Farmer’s problems in paddy cultivation in the coastal belt of Ampara District in Sri Lanka. 8th Annual Science Research Session (ASRS), Faculty of Applied Sciences, South Eastern University of Sri Lanka, pp3
      77. Amarasinghe, K.I.C., Jayakody, L.K.R.R and. De Silva, S (2018). Impact of temperature and water stress on growth and yield of rice (Oryza sativa variety ‘Suwandel’).  International Research Sessions of the Open University, pp 97
      78. Nuwan Kumara and Shanthi De Silva (2018). Effect of different mulching material on growth and yield of local ginger (Zingiber officinale Roscoe) in the low country intermediate zone of Sri Lanka. International Research Sessions of the Open University, pp 116
      79. Iresha Rasanjali and Shanthi De Silva (2018). Effect of super absorbent polymers (SAPs) on growth of black pepper (Piper nigrum) in nursery management under various irrigation regimes. International Research Sessions of the Open University, pp 117
      80. Isuru Wickramasinghe and Shanthi De Silva (2018). Effect of partially burnt paddy husk on growth and yield of Curcuma longa (Turmeric) cultivation in Sri Lanka. International Research Sessions of the Open University, pp 119
      81. Priya Maheswaren and Shanthi De Silva (2018). Varietal performance of green chilli under different irrigation systems and mulches in Jaffna District of Sri Lanka. International Research Sessions of the Open University, pp 94
      82. Theepa Navarathinam and Shanthi De Silva (2018). Growth yield response of Onion (Allium cepa) for different type of Biochar and fertilizer regime in red yellow latasols in Jaffna Peninsula. International Research Sessions of the Open University, pp118
      83. Nilupa Dishani and Shanthi De Silva (2018). Adverse effects of Global warming on productivity of field crops and farmer level adaptation measures-A case study in Hambantota District. International Research Sessions of the Open University, pp 88
      84. Dilshad Mohamed and Shanthi De Silva (2018). Identification of suitable irrigation interval for short and long duration rice varieties in order to overcome drought in Ampara District. International Research Sessions of the Open University, pp 114
      85. Amarasinghe, K.I.C., De Silva, C.S. and Jayakody, L.K.R.R. (2018). Adverse effects of induced high temperature stress and water stress on tissue cultured Banana plants (AAA Cv Cavendish). Proceedings of the 38th Annual Sessions of the Institute of Biology, Abstract number 3-07, pp 57.
      86. Theepa Rageendrathas and De Silva, C.S. (2018). Use of bio-char for the improvement of soil nutrient status of Calcic Red Yellow Latasol soil in Jaffna District of Sri Lanka for Onion cultivation. Proceedings of the 38th Annual Sessions of the Institute of Biology, Abstract number 3-15, pp 65.
      87. Amarasinghe, K.I.C., Dishani, P.T.N., De Silva, C.S. and Jayakody, L.K.R.R. (2017). Preliminary study on induced temperature and water stress on yield parameters of Tissue Cultured Ananas comosus (Pineapple)- variety Kew. Proceedings of the 15th Open University Research Sessions-OURS2017, pp 429-434.
      88. Samarakody, P. and De Silva, C.S. (2017). Impact of excessive use of phosphorus fertilizers on soils in the central Highlands of Sri Lanka and possible Health Hazards. Proceedings of the 15th Open University Research Sessions-OURS2017, pp 439-444.
      89. Dishani, P.T.N.and De Silva, C.S. (2017). Farmer’s perception on climate change and coping strategies; A case study in Major Irrigation Schemes of Puttlam District. Proceedings of the 15th Open University Research Sessions-OURS2017, pp 445-450.
      90. Kumari, ., Sirisena, D.N. and De Silva, C.S. (2017). Investigation of farmers level problems for low productivity of paddy cultivation in Mahagirilla Agrarian Services Division of Sri Lanka. Proceedings of the 15th Open University Research Sessions-OURS2017, pp 451-454.
      91. Maheswaran, P., De Silva, C.S. and Karunainathan, T. (2017). Effect of different Irrigation Methods and Mulches on leaf Curl Complex Attack in Chilli in Jaffna District. Proceedings of the 15th Open University Research Sessions-OURS2017, pp 465-470.
      92. Krishnapillai, A. and De Silva, C.S. ( 2017). Growth and yield performance of Newly introduced Chilli Variety (Capsicum Annum L. var. MI) grown under Basin Irrigation System in Jaffna District of  Sri Lanka. Proceedings of the 15th Open University Research Sessions-OURS2017, pp 471-476
      93. Dishani, P.T.N..and De Silva, S. (2016). Present status of water availability for agricultural production in the dry zone of Sri Lanka and the possible adaptation measures- A case study in Rajangana-Anuradhapura. Open University Research Sessions 2016, pp 168-171
      94. Mohamed, A.M.A.W., Iqbal, Y.B. and De Silva, S. (2016). Evaluation of the effect of organic manures as the substitution for inorganic fertilizers on yield of Rice (BG 94 – I) in Ampara district.  Open University Research Sessions 2016, pp 164-167
      95. Ranasinghe, E. M .S., and S. De Silva (2016). An analysis of seasonal rainfall variability on paddy production in Sri Lanka. Proceedings of the International Research Conference (IConArts2016), 12-13 Oct:2016, Faculty of Arts, University of Colombo, Sri Lanka. Pp76.
      96. Dishani, P.T.N. and De Silva, S (2015). Effect of mulch on tomato (lycopersicum esculantam) exposed to temperature and water stress. Proceedings of the research symposium on environmental conservation & management: Towards Sustainable Environment. 25th January 2015 University of Kelaniya, Sri Lanka pp6
      97. Dishani, P.T.N. and De Silva, S (2015). Farmers’ perception on climate change and water availability: A case study in selected areas of Anuradhapura District. Proceedings of the research symposium on environmental conservation & management: Towards Sustainable Environment. 25th January 2015 University of Kelaniya, Sri Lanka. pp36
      98. Koralage, I.S.A., Weerasinghe, P..and De Silva, S. (2015). Development of available phosphorus testing toolkit for farmers. Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka, ISSN 2012-9912, pp 175-178.
      99. Kavish, S., Botheju, W.S. and De Silva, S. (2015). Impact of different leaf standards and the inlet drying temperature on the quality characteristics of leafy type of made tea.  Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka, ISSN 2012-9912, pp 183-186.
      100. De Silva, S. (2015). Water crisis in north central province of Sri Lanka-Past, Present and Future predictions. Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka, ISSN 2012-9912, pp 89-92.
      101. Dishani, P.T.N.and De Silva, S (2015).Will the dry zone farmers cope with climate change impacts? –A case study in Hambantota district. Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka, ISSN 2012-9912, pp 93-96.
      102. Dishani, P.T.N. and De Silva, S. (2015). Global warming induced temperature and water stress on marketable fruit quality of tomatoes grown with mulch. Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka, ISSN 2012-9912, pp 179-182.
      103. Ranasinghe, E.M.S., De Silva, S. and Piyadasa, R.U.K. (2015). A study of Paddy Farmers’ perception and adaptation strategies on seasonal rainfall variability in Sri Lanka.  Proceedings of the International Research Conference on Changing  Socio-Economic Dynamics in Sri Lanka: Contexts, Cultures and Imaginations. 3-4 December 2015. pp60
      104. Ranasinghe, E.M.S. and De Silva, C.S (2015). An assessment on the possibility of predicting excessive conditions of seasonal rainfall in Sri Lanka using Southern Oscillation Phenomenon.  Proceedings of the International Research Conference on Changing Socio-Economic Dynamics in Sri Lanka: Contexts, Cultures and Imaginations. 3-4 December 2015. pp59
      105. Ranasinghe, E.M.S, De Silva, S. and.Piyadasa, R.U.K. (2014). Variability of Rainfall and relationship to Southern Oscilation in Hambantota, Sri Lanka. Proceedings of International Research Conference on Humanities and Social Sciences, University of Sri Jayawardenapura, ISBN 2279-2309, pp 41.
      106. Aiomi, G.V.N.and De Silva,C.S. (2014). Effect of mulch on soil properties and yield of groundnut plants exposed to temperature stress.  Proceedings of the Annual Academic Sessions, ISBN 2012-9912, pp 1-4.
      107. Dishani, P.T.N. and De Silva, S (2014).Impact of mulches on physiological parameters of Tomato (Solanum lycopersicum-variety Thilina) at different stages exposed to high temperature and water stress. Proceedings of the OUSL Annual Academic Sessions, ISBN 2012-9912, pp 9-12.
      108. De Silva, C.S. (2014) Impact of climate change on water resources in Central Hills of Sri Lanka and possible adaptation measures. Proceedings of the Annual Academic Sessions, ISBN 2012-9912, pp 100-103.
      109. Ranasinghe, M.S., De Silva, C.S. and.Piyadasa, R.U.K. (2014) Inter-decadal variability of seasonal rainfall in Sri Lanka within the period of 1951-2010. Proceedings of the OUSL Annual Academic Sessions, ISBN 2012-9912, pp 104-108.
      110. Ranasinghe, M.S., De Silva, C.S. and.Piyadasa, R.U.K. (2014) An assessment of seasonal rainfall variability in Batticaloa District, Sri Lanka. Proceeding of the 2014 International Conference of the Faculty of Arts. University of Colombo. 17-18 November 2014. ISBN 2420-7365. pp36
      111. De Silva, C.S (2013). Impact of climate change in Jaffna Peninsula and possible adaptation measures. “SCP Driving Sri Lanka towards a green economy”. 2nd Sri Lankan roundtable on sustainable consumption and production. Pp 16-17.
      112. Dinushani, K.K.P., De Silva, C.S and Gunawardena, M.D.M. (2013). Determination of crop-coefficient and crop water requirement of Mungbean (Vignarata L.) in DL1B agro ecological region of Sri Lanka. Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka. ISBN 2012-9912, pp11-14.
      113. De Silva, C. S. (2013). Water quality assessment in Jaffna, Vavuniya, Anuradhapura, Kurunagala and Hambantota in Sri Lanka for domestic purposes. Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka. ISBN 2012-9912, pp5-8.
      114. Dishani, P.T.N and De Silva, S. (2013). Impact of mulch on growth parameters of Tomato(Solanum lycopersicum-Variety Thilina) plants exposed to high temperature and water stress. Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka. ISBN 2012-9912, pp14-18
      115. Dishani, P.T.N and De Silva, S. (2013). Impact of mulch on yield and quality parameters of Tomato(Solanum lycopersicum-Variety Thilina) plants exposed to high temperature and water stress. Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka. ISBN 2012-9912, pp19-22
      116. Norica Aiomi, G.V. and De Silva, S. (2013). Impact of mulching on soil properties to cope with temperature stress by Maize plants (Zea Mays.L). Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka. ISBN 2012-9912, pp23-26.
      117. Munasinghe, S.S.P., Nakandala, S.A., De Silva, S., Seneviratne, P.,.Iqbal, S.M.M. and Pathirana, P.D. (2013). Performance assessment of technically specified and non-technically specified sprinkler irrigation systems in rubber nurseries in the intermediate zone of Sri Lanka. Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka. ISBN 2012-9912, pp27-32.
      118. Norica Aiome, G.V. and De Silva, S. (2012). Response of maize plants (Zea Mays.L) to stressful temperatures. Proceedings of the Annual Academic Sessions of the Open university of Sri Lanka. ISBN 2012-9912, pp: 5-8.
      119. Norica Aiome, G.V. and De Silva, S. (2012).Effect of temperature stress and mulch on growth and yield of Chilli (Capsicum Annuam.L). Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka. ISBN 2012-9912, pp: 13-16.
      120. Norica Aiome, G.V. and De Silva, S. (2012). Effect of mulch of yield of groundnut (Arachis Hypogaea.L). Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka. ISBN 2012-9912, pp: 17-20.
      121. De Silva, S. and Tellam, J. (2012) Nitrate leaching from soils with textural differences and crop types. Proceedings of the Annual Academic Sessions of the Open University of Sri Lanka. ISBN 2012-9912, pp: 9-12.
      122. De Silva, C.S. (2011). Fate of nitrogenous fertilizers in the unsaturated soil zone under rainfed Chilli  OUSL Annual Academic Sessions -2011 proceedings. pp1-5. The Open University of Sri Lanka, Nawala, Nugegoda.
      123. Gunawardena, M.D.M., De Silva, C. S. and Gunasekara, H. K. L. K. (2011). Impact of temperature and water stress due to global warming on growth and yield of Tomato (Lycopersicon esculentum). OUSL Annual Academic Sessions -2011 proceedings. Pp 6-10. The Open University of Sri Lanka, Nawala, Nugegoda.
      124. De Silva, C.S. (2011). Community well water quality deterioration due to nitrate leaching and possible health Hazards. International Conference on “Community and Water Services-Challenges for sustainability, Malteser International, pp 67.
      125. De Silva, S. (2011). Impact of Climate change on Water Resources Management in Sri Lanka. Climate Change Volunteer Group Conference and Expo-11, Mayfair Garden Hotel, London, UK.pp 16-26.
      126. De Silva, C.S. (2010). Spatial Impacts of climate change on major climatic factors and their consequences in Sri Lanka. Annual Research Sessions of Sir John Kotalawala Defense University pp2-4.
      127. De Silva, C.S. (2009).Impact of Climate Change predictions on food production in Sri Lanka and possible adaptation measures. Abstracts of the National Symposium on Promoting Knowledge Transfer to strengthen Disaster Risk Reduction & Climate Change Adaptation. 7-8 July 200, BMICH, Colombo, Sri Lanka.pp7.
      128. De Silva, C.S. (2009) Impacts of climate change on North-east monsoon and possible consequences in the dry zone of Sri Lanka. OUSL-Annual Academic Sessions-2009, pp48-51.
      129. De Silva, C.S. (2009) Climate change effects on North east monsoon and Dry zone Agriculture in Sri Lanka. Proceedings of Conference on Global Climate Change and its impacts on Agriculture, Forestry and Water in the Tropics, Tourmaline-Kandy, September 10-11, 2009.
      130. Fernando,T.N. and De Silva, S (2009). Preliminary study on water and soil quality analysis in tsunami affected areas-A case study in a coastal belt from Panadura to Moratuwa. Proceedings of the Annual Academic Sessions-2009- The Open University of Sri Lanka p127-130.
      131. Silva, S.D., De Silva, S and.Withrama, W.R.G. (2009). Effect of depth of ploughing on soil moisture retention and growth of rain fed sugarcane. Proceedings of the Annual Academic Sessions-2009- The Open University of Sri Lanka p157-160.
      132. Wimalasena, W. R. W., De Silva, C. S.Wijerathna, P. M. (2008). Comparison of growth and yield parameters of traditional and newly improved rice varieties under the green house condition. OUSL Annual Academic Sessions-2008 Proceedings, 38-40.
      133. Egodawatta, W. M. S. K., De Silva C. S. and Sarananda, H. (2008). Development of Ready to Serve Drink and Nectar from Pomegranate. OUSL Annual Academic Sessions-2008 Proceedings, 105-108.
      134. Jeewandara, T. K., De Silva, C. S., Gunasekara, H. K. L. K. and Wickramasinghe, C. (2008). Preliminary study on the effects of N, P and K fertilizer on growth of Sandriana (Dracaena sandriana) to improve export quality. OUSL Annual Academic Sessions-2008 Proceedings, 105-108.
      135. Rathnayake,A.S. and De Silva, C.S. (2008). Water quality of wells used for drinking purposes in coastal areas of Hambantota district. OUSL Annual Academic Sessions-2008 Proceedings, 21-24.
      136. De Silva, C. S. (2008). Predicting the impacts of climate change on rainfall runoff in Sri Lanka and possible adaptation measures. OUSL Annual Academic Sessions-2008 Proceedings, 30-33.
      137. Muthukumari, K.M.A and De Silva, C.S. (2007). A preliminary study to select soil amendments to improve the soil in the Open University of Sri Lanka, Nawala for successful growth of Okra (Hisbiscus Esculentus). Proceedings of the OUSL Inaugural Annual Academic Sessions-2007, pp84-86.
      138. De Silva, C.S. (2007). Impacts of Climate Change on Water Resources of Sri  Proceedings of the OUSL Inaugural Annual Academic Sessions-2007, pp87-89.
      139. Nishantha, E.A.D.N., Silva, W.P.K., Weerakkody, N.S. and. De Silva, C.S. (2007). Pathogenicity of isolates of Cornespora Cassicola from Papaya and Rubber. Proceedings of the OUSL Inaugural Annual Academic Sessions-2007, pp 90-92.
      140. Gunasena, H.A.I. Peris, K.H.S. and De Silva, C.S. (2007). Effect of different potting media mixtures on growth of durian (Duriao Zibethinus) and Jackfruit (Artocarpus Hetarophyllus) Grafts. Proceedings of the OUSL Inaugural Annual Academic Sessions-2007, pp110-112.
      141. De Silva, C.S. (2007). Consequences of climate change impacts on Southwest Monsoon Rains and natural management in Sri Lanka. Proceedings of the twelfth international Forestry and Environment Symposium 2007. University of Sri Jayawardenapura. 30th November 2007, Kalutara, pp7-8, ISBN 978-955-9054-63-4.
      142. Amarasinghe, R. and De Silva, C.S. (2004).Agrowell water quality assessment in Vavuniya District for domestic and agricultural purposes. Proceedings of the OUSL Inaugural Annual Academic Sessions-2004, pp12.
      143. Godawatta, N.A. and De Silva, C.S. (2004). Impact of intensive vegetable cultivation on agrowell water quality for drinking and agricultural purposes in malsiripura region of Kurunagala District. Proceedings of the OUSL Inaugural Annual Academic Sessions-2004, pp15.
      144. De Silva, C.S, Lekamge, L.D and.Coomaraswamy, U. (2004). Content in Agriculture and rural development for women and girls in Sri Lanka through distance learning, 18th Annual Conference of the Asian Association of Open Universities, Shanghai, China, 28-30 November 2004, p 64.
      145. Samaranayake,D.S., De Silva, C.S. Coomaraswamy, U. (2003). Distance Learning Resources for Rural Women and Girls in Sri Lanka. Proceedings of the 17th Annual Conference of the Asian Association of Open Universities Siam City Hotel, Bangkok, Thailand. 12-14th November 2003.pp 67-68.#
      146. De Silva, C.S. (2003). Sustainable Livelihood Options to cope with drought by women in the Kurunagala District of Sri Lanka, proceedings of the OUSL Inaugural Annual Academic Sessions-2003, 19th November 2003.pp 38.
      147. De Silva, C.S. (2000). Optimum well dimensions for sustainable irrigation. Vidya, Vol: 2, No: 4, 7.
      148. Shanthi De Silva (1998). Groundwater resources as supplementary irrigation in the dry and intermediate zones of Sri Lanka for drought mitigation. Workshop on the Role aof R &D institutions in natural disaster management.Centre for Housing Planning & Building, Colombo, Sri Lanka.18-1-18-4.
      149. De Silva, C.S (1996). Impacts of land use on soil erosion in mid-country of Sri Lanka. Proceedings of the International Symposium on Erosion and Sediment Yield:  Global and Regional Perspectives. University of Exeter, Devon, UK pp3
      150. Shanika Dilrukshi, Rasanjali, K.G.A.I., De Silva, C.S and L.K. R.R. Jayakody (2020.) Effect of a water saving supper absorbent polymer on irrigation intervals of temperature and water stressed chilli (Capsicum annuum ) plants. Proceedings of the Annual Academic Sessions (OURS) 2020, the Open University of Sri Lanka.
  • Undergraduate Projects nearly 30 up-to-date
  • MPhils -4
  • PhDs -3
  • Visiting Scientists at the Cranfield University, UK from October 2005 to March 2006.
  • Senior Honorary Research Fellow at the School of  Earth, Geography and Environmental Sciences, University of Birmingham, UK from January  to July 2011
  • Member of Research Council of the National Institute of Fundamentals Studies, Hantana, Kandy.
  • Steering Committee member of the CAPnet –Lanka of the South Asian Consortium of Water Partnership.
  • Steering Committee member of the Sri Lanka Water partnership and Lanka Jalani
  • Steering Committee member of the Netwater of Women Water Professionals
  • Member of the Programme Review panel appointed by the University Grants Commission for the University of Moratuwa, Faculty of Architexture from Jan 2020-June 2022
  • Member of the Programme Review panel appointed by the University Grants Commission for the University of Moratuwa, Faculty of Engineering from Jan 2020-June 2022
  • Member of the Programme Review panel appointed by the University Grants Commission for the University of Peradeniya-Faculty of Medicine from Aug 2019-Jan 2020
  • Member of the Programme Review panel appointed by the University Grants Commission for the University of Kelaniya-Department of Finance from Aug 2018-Aug 2019
  • Chairperson of the Programme Review panel appointed by the University Grants Commission for the University of Kelaniya-Department of Accountancy from Aug 2018-Aug 2019
  • Chairperson of the Programme review panel appointed by the University Grants Commission, Sri Lanka for the University of Rajarata from Aug 2017-Aug 2018
  • Chairperson of the Programme Review panel appointed by the University Grants Commission, Sri Lanka for Sri Jayawardenapura  University, Sri Lanka from Aug 2017-Aug 2018
  • Panel member of the committee appointed by the Ministry of Higher Education, Sri Lanka to evaluate the degree awarding status of ESOFT Metro Campus, Sri Lanka from Nov 2016- Nov 2017
  • The Excellency of President’s nominee as Member of Research Council   of the Institute of Fundamentals Studies, Hantana, Kandy from June 2012-June 2015
  • Senior Honorary Research Fellow at the School of Earth Geography and Environmental Sciences, University of Birmingham, UK from Jan 2011 – Jul 2011
  • Steering Committee member of the CAPnet Sri Lanka of the South Asian Consortium of Water Partnership from Janu 2005 till  to date                                                                
  • Resource Person in the Technical Advisory Committee of the    National Disaster Management Centre of the Ministry of women Empowerment and Social Welfare from Janu 2005-Dec 2012
  • Visiting Scientist, Institute of Water and Environment, Cranfield University, UK from Oct 2005 – Mar 2006
  • Steering Committee member of the Netwater of Women Water Professionals of Sri Lanka from Janu 2005-till to date
  • Team Leader for Meegassagama Tank Water Balance Analysis for International Water management Institute (IWMI), Sri Lanka from Janu 2000-Dec 2000
  • Team Leader for Groundwater resource analysis in Meegassagama lower command area of the Thirappane Cascade System for International Water management Institute (IWMI), Sri Lanka from Janu 2002-Dec 2002
  • Team leader for Water Resources for Climate change project   of the Ministry of Forestry and Environment of Sri Lanka to develop the National Action Plan from Janu 1999-Dec 1999
  • Resource person for Groundwater resource analysis and Nomograph development for Huruluwewa project of International Water Management Institute (IWMI), Sri Lanka from Janu 1996-Dec 1996
Unpublished Thesis:

De Silva, C.S (1988) Catchment Hydrology in Mahaweli System C of Sri Lanka.  M.Phil Thesis.  Post graduate Institute of Agriculture, University of Peradeniya, Sri Lanka.

De Silva, C.S (1995). The use of large diameter wells (agrowells) for supplementary irrigation from hard-rock aquifers of Sri Lanka.  Ph.D Thesis. Silsoe College, Cranfield University , Bedford, UK

  • Annual Research Award for the year 2023 by the Open University of Sri Lanka
  • Annual Research Award for the year 2022 by the Open University of Sri Lanka
  • Annual Research Award for the year 2021 by the Open University of Sri Lanka
  • Annual Research Award for the year 2020 by the Open University of Sri Lanka
  • Annual Research Award for the year 2019 by the Open University of Sri Lanka
  • Annual Research Award for the year 2018 by the Open University of Sri Lanka.
  • Annual Research Award for the year 2017 by the Open University of Sri Lanka.
  • Merit Award for Scientific Publication for year 2017 by the National Research Council of the Presidential Secretariat, Sri Lanka
  • Presidential Awards for Scientific Research –2016 by the National Research Council of the Presidential Secretariat, Sri Lanka
  • Annual Research Award for the year 2016 by the Open University of Sri Lanka.
  • Annual Research Award for year 2015 by the Open University of Sri Lanka.
  • Annual Research Award for year- 2014 by the Open University of Sri Lanka.
  • D Supervision Award (2012) under SUSRED Scheme of the National Science Foundation and the cash prize of Rs 300,000
  • Commonwealth Academic Fellowship Award for 2010 at University of Birmingham, United Kingdom by the Commonwealth Scholarship Commission in the United Kingdom.
  • Annual Research Award for 2009/2010 by the Open University of Sri Lanka for research paper on “S De Silva and T.Mikunthan (2010). Estimation of groundwater recharge in limestone aquifer using an improved soil moisture balance method: A case study in Jaffna District”.
  • Annual Research Award for 2009 by the Open University of Sri Lanka for research paper on Mikunthan, T. and C.S De Silva (2008). Vulnerability assessment for shallow aquifers using chemical quality of groundwater: A case study from Thirunelvely and Kondavil in Jaffna District. Tropical Agricultural Research, University of Sri Lanka, Vol 20: 303-312.
  • Presidential Awards for Scientific Research 2008 by the National Research Council of the Presidential Secretariat, Sri Lanka
  • Annual Research Award for 2008 by the Open University of Sri Lanka for research paper on “De Silva, C.S., E.K.Weatherhead, J.W. Knox, J.A.Rodrihuez-Diaz (2007). Predicting the impacts of climate change-A case study of paddy irrigation water requirements in Sri Lanka. Journal of Agricultural Water Management 93(2007)19-29.
  • Presidential Awards for Scientific Research 2007 by the National Research Council of the Presidential Secretariat, Sri Lanka
  • Annual Research Award for 2005/2006 by the Open University of Sri Lanka for research paper on “De Silva, C.S (2006) Impacts of climate change on potential soil moisture deficits and its use as a climate indicator to forecast irrigation need in Sri Lanka. Water Resources Research in Sri Lanka, Postgraduate Institute of Agriculture, University of Peradeniya., pp79-90,  ISBN 955-1308-05-0”
  • Commonwealth Academic Fellowship Award for 2005 at Cranfield University, United Kingdom by the Commonwealth Scholarship Commission in the United Kingdom.
  • Excellence in Research Award for 2003 by the Open University of Sri Lanka, Nawala, Nugegoda. For research paper on “De Silva, C.S (2002) Sustainable groundwater resource management in the Thirappane Tank Cascade System.  Journal of National Science Foundation, 30(3&4): 97-108”
  • Merit Award for excellent scientific research for 2001 by the National Science Foundation of Sri Lanka for Research on “Identifying optimum agro well dimensions for sustainable irrigation in Anuradhapura District”.
  • Best Paper Presentation Award in the Sub section of Irrigation and Water Resources in 1996 at the Annual Sessions of Post Graduate Institute of Agriculture, University of Peradeniya, for research paper on “De Silva, C.S, K Weatherhead and K.R Rushton (1996). Sustainability of Agro well irrigation on hard rock aquifers of Sri Lanka. Tropical Agricultural Research, 8:163-174”
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