• De Silva, A.L.C., De Costa, W.A.J.M. and Senarathna, H.A.K.N.N. (2019). The varietal variation in photosynthesis and transpiration efficiency at initial growth stage of sugarcane at elevated atmospheric CO2 and temperature. pp. 99. In A. Chandra, M. Swapna, R. Manimekalai, P. Singh, A.K. Tiwari and G. P. Rao (ed) Proceedings of the International Conference of Sugarcon-2019, Green Technologies for Sustainable Development of Sugar and Integrated Industries. ICAR-Indian Institute of Sugarcane Research, Lucknow, Uttar Pradesh, India.
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  • L. M. J. R. Wijayawardhana, A. L. C. De Silva, B. R. Kulasekara, W. R. G. Witharama and H. M. G. N. S. C. Bandara (2019). Relationship between Cane Yield and Landscape’s Hydro-Geomorphic Parameters in Sugarcane Plantation in Hingurana, Sri Lanka. In: Proceedings of the 7th symposium on plantation crop research “Towards achieving sustainable development goals in the plantation sector” Dr. V. H. L. Rodrigo, Dr B. W. Wijesuriya, Dr. D. G. Edirisinghe, Dr. N. M. C. Nayanakantha (Eds). Rubber Research Institute, Dartonfield, Agalawatta, Sri Lanka. pp 59-66.
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  • Suvimal, W.K.D.C., Wijesekara, I., Karunarathna, W.K.D.S., De Silva, A.L.C., Weerasinghe, H.A.S., Maralanda, S.M.T.A., Wijesuriya, A. and Wickramasinghe, I. (2018). Comparative biochemical analysis of granulated jaggery from peeled and unpeeled sugarcane stems. SLCARP International agricultural Research Symposium 2018, Taj Samudra hotel Colombo, Sri Lanka.

  • De Silva, A.L.C., L. M. J. R. Wijayawardhana and W.R.G.Witharama. (2017). Present Status of Research and Development on Climate Change Mitigation and Future Needs in the Sugarcane Sector in Sri Lanka, In: Proceedings of the Workshop on “Present Status of Research Activities on Climate Change Adaptations”., B. Marambe (eds), Sri Lanka Council for Agricultural Research Policy, Colombo. pp 101-112.
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  • L. M. J. R. Wijayawardhana, S.D.T.P. Saputhanthri, L.P. Vidhana Arachchi and W.R.G Witharama (2017). Management of physical properties of reddish brown earth soils at Uda Walawe (Walawa series) for sustainable sugarcane production, Sugarcane Sri Lanka, Sugarcane Research Institute, Uda Walawe, Sri Lanka. Volume -3
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  • L. M. J. R. Wijayawardhana, De Silva, A.L.C. and Witharama, W.R.G. (2017). Evaluation of alternate-row furrow irrigation technique on the growth and performance of sugarcane (Saccharum officinarum L.) grown in Reddish Brown Earth soil in Sri Lanka, Sugarcane Sri Lanka, Sugarcane Research Institute, Uda Walawe, Sri Lanka. Volume -3
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  • Wijawardhana, L.M.J.R., De Silva, A.L.C. and Chathuranga, G.A.A. (2017). A new device for demarcating furrow lines for sugarcane cultivation on undulating terrain Presented at proceeding of 73rd Annual session, Sri Lanka Association for the Advancement of Science, Colombo 07.
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  • De Silva, A.L.C. and De Costa, W.A.J.M. (2016). Ratoonability of some commercial sugarcane varieties under rain-fed and irrigated conditions in Uda Walawe Sri Lanka. 3 pp. In N. S. B. M. Atapattu (ed) Proceedings of the International Symposium on Agriculture and Environment 2016. Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka.
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  • Wijayawardane, L.M.J.R., De Silva, A.L.C. and Witharama, W.R.G. (2016). Evaluation of alternate-row furrow irrigation technique on the growth and performance of sugarcane (Saccharum officinarum L.) grown in Reddish Brown Earth soil in Sri Lanka. pp. 137-147. In V. R. M. Vidhanaarachichi, H. M. I. K. Herath, M. K. Meegahakumbura, A. D. N. T. kumara and M. K. F. Nadheesha (ed) Proceedings of the 6th symposium on plantation crop research – “Plantation Agriculture towards National Prosperity” Coconut Research Institute, Lunuwila, Sri lanka.
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  • Witharama, W.R.G., Wijawardhana, L.M.J.R., and Chathuranga, G.A.A. (2015). The Effect of a Mixture of Glufosinate Ammonium 150g/l WSC (Basta) and Diuron 80 % WP in Controlling Weeds in Sugarcane, Sugarcane Sri Lanka, 2:1-14.
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  • Witharama, W.R.G., De Silva, A.L.C. and Wijayawardhana, L.M.J.R. (2015). Krismat 75 WG, A novel herbicide for early and late post immergence weed control in sugarcane, Sugarcane Sri Lanka, Sugarcane Research Institute, Uda Walawe, Sri Lanka. Vol 2. pp 26-35.
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  • Wijayawardhana, L.M.J.R., De Silva, A.L.C. and Witharama, W.R.G. and Nimal, W.G. (2015). Analysis of consecutive-day maximum rainfall at Uda Walawe, Sri Lanka, Sugarcane Sri Lanka, Sugarcane Research Institute, Uda Walawe, Sri Lanka. Vol 2. pp 15-21.
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  • De Silva, A.L.C., Wijesuriya, A. and Wijayawardane, L.M.J.R. (2014). Genetic potential of sugarcane (Saccharum spp. Hybrid) and its wild relatives (Saccharum spontaneum and Erianthus arundinaceous) for improvement of shoot and root growth and stomatal resistance. pp. 53-61. In A. P. Keerthipala (ed) Proceedings of the Fifth Symposium on Plantation Crop Research – “Towards a Green Plantation Economy” Sugarcane Research Institute, Uda Walawe, 70190, Sri Lanka.
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  • Wijawardhana, L.M.J.R., De Silva, A.L.C. and Witharama, W.R.G. (2014). Optimizing Planting Schedules of Sugarcane for Saving Irrigation Water in Sevanagala and Uda Walawe, Sri Lanka. pp. 105-110 In A. P. Keerthipala (ed) Proceedings of the Fifth Symposium on Plantation Crop Research – “Towards a Green Plantation Economy”. Sugarcane Research Institute, Uda Walawe, 70190, Sri Lanka.
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  • Wijayawardane, L.M.J.R., De Silva, A.L.C. and Witharama, W.R.G. (2014). Optimizing planting schedules of sugarcane for saving irrigation water in Sevanagala and Uda Walawe, Sri Lanka, Sugarcane Sri Lanka, Sugarcane Research Institute, Uda Walawe, Sri Lanka.Vol 1. pp 15-20.
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  • De Silva, A.L.C. and De Costa, W.A.J.M. (2014). Sucrose accumulation and maturity patterns of sugarcane under rain-fed and irrigated conditions in Sri Lanka. pp. 115-118. In N. S. B. M. Atapattu (ed) Proceedings of the International Symposium on Agriculture and Environment 2014 – “Ensuring Sustainable Development through Biodiversity and Ecosystem Services” Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka.
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  • Wijawardhana, L.M.J.R. De Silva, A.L.C. and Witharama, W.R.G (2013) Assessment of Water Requirement of Sugarcane, Banana and Paddy in Sevanagala. Presented at proceeding of 69th Annual session, Sri Lanka Association for the Advancement of Science, Colombo 07.
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  • De Silva, A.L.C. and De Costa, W.A.J.M. (2012). Growth and Radiation Use Efficiency of Sugarcane under Irrigated and Rain-fed Conditions in Sri Lanka. Sugar Tech. Vol. 14(3), pp 247-254. DOI: 10.1007/s12355-012-0148-y
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  • De Silva, A. L. C., Ariyawansha, B. D. S. K., Wijayawardana, L. M. J. R. and Witharama, W. R. G. (2012). Effects of mulching on growth and yield in plant crop of sugarcane under rain-fed conditions in Sevanagala, Sri Lanka. Proceedings of the Fourth Symposium on Plantation Crop Research 21st-22nd September 2012, Colombo, Sri Lanka.
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  • De Silva, A.L.C. (2012). Varietal variation in stomatal conductance of sugarcane under rain-fed conditions in Sri Lanka. Proceedings of the Symposium on Minor Export Crops, 16-17 August 2012, Peradeniya, Sri Lanka. pp 123-128.
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  • De Silva, A.L.C. (2012). Diurnal variation in stomatal conductance of sugarcane varieties under rain-fed conditions in Sri Lanka. Proceedings of the International Symposium on Agriculture and Environment 2012. 29th November 2012, Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka. pp 186. (Abstract)
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  • De Silva, A.L.C. (2012). Water use efficiency in commercial sugarcane varieties under irrigated and rain-fed conditions in Sri Lanka. Proceedings of Research Symposium on meeting global challenges through knowledge and wisdom, 22-23 November 2012, Uva Wellassa University of Sri Lanka. Badulla, Sri Lanka. Vol. II, pp 531-534.
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  • De Silva, A.L.C., De Costa, W.A.J.M and Bandara, D.M.U.S. (2011). Growth of root system and the patterns of soil moisture utilization in sugarcane under rain –fed and irrigated conditions in Sri Lanka. Sugar Tech Vol. 13(3), 198-205. DOI:10.1007/s12355-011-0088-y.
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  • De Silva, A.L.C. (2011). Physiological behavior of sugarcane in sub-humid climatic conditions. LAP LAMBERT Academic publishing Gmbh & Co. KG, Germany.p142. [ISBN:978-3-8454-0336-6].
    http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Dstripbooks&field-keywords=9783845403366&x=17&y=20

  • De Silva, A.L.C. and Witharama, W.R.G. (2011). Advantages of cane tops as a planting material in spaced transplanting technique of sugarcane, In: Proceedings of the International Symposium on Agriculture and Environment 2011. Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka. p 20.
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  • Wijayawardhana, L.M.J.R., Abeyrathna, K.H.D., Witharama, W.R.G., and Keerthipala, A.P. (2011). Run-off harvesters and agro-wells for supplementary irrigation of rain-fed sugarcane at Sevanagala in Sri Lanka: A preliminary investigation. 16th International Forestry and Environmental Symposium, University of Sri Jayawardhanapura, Sri Lanka.

  • Kumarasinghe, N.C. and Wijayawardhana, L.M.J.R. (2011). Effect of climatic condition on sugarcane cultivation in Sri Lanka. International Conference on the Impact of Climate Change on Agriculture, Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka.
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  • De Silva, A.L.C., De Costa, W.A.J.M. and Bandara, D.M.U.S. (2010). Growth of root system and the patterns of soil moisture extraction in sugarcane under rain-fed and irrigated conditions. Proceedings of the International symposium 2010. 16th November 2010, Faculty of agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka. p5.

  • Witharama, W.R.G. and De Silva, A.L.C. (2010). Effects of stubble shaving, fertilization and gap filling on the performance of sugarcane (Saccharum officinarum L.) ratoon crops in Sri Lanka. In: Proceedings of the Third Symposium on Plantation Crop Research– Stakeholder empowerment through Techno-logical Advances (Eds.R.S.Dharmakeerthi and A.M.W.K.Senevirathna) Rubber Research Institute of Sri Lanka, Dartonfield , Agalawatta. pp 189-199.
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  • De Silva, A.L.C., De Costa, W.A.J.M. and Bandara, D.M.U.S. (2010). Growth of root system and the patterns of soil moisture extraction in sugarcane under rain-fed and irrigated conditions. Proceedings of the Inter national symposium 2010. 16th November 2010, Faculty of agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka. p5.

  • De Silva, A.L.C. and Witharama, W.R.G. (2010). Optimum inter-settling spacing and potential of using cane tops in spaced transplanting technique of sugarcane in Sri Lanka, In: Proceedings of the Third Symposium on Plantation Crop Research – Stakeholder empowerment through Techno-logical Advances. Colombo, Sri Lanka. pp 108-120.
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  • De Silva, A.L.C. and De Costa, W.A.J.M. (2009). Varietal variation in stomatal conductance, transpiration and photosynthesis of commercial sugarcane varieties under two contrasting water regimes. Proceedings of the Second National symposium 2009. 10th September 2009, Faculty of agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka. p14 .
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  • De Silva, A.L.C. and De Costa, W.A.J.M. (2009). Varietal variation in stomatal conductance, transpiration and photosynthesis of commercial sugarcane varieties under two contrasting water regimes. Tropical Agricultural Research and Extension. 12(2): 97-102. DOI: 10.4038/tare.v12i2.2798
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  • De Silva, A.L.C. (2008). Varietal variation in canopy development and radiation interception of sugarcane under two contrasting water regimes, Proceedings of the National symposium 2008. 23nd -24th October 2008, Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka. p17.

  • De Silva, A.L.C. (2008). Evaluation of Agronomic traits, their correlation to yield and ratoononing ability of near commercial sugarcane varieties under supplementary irrigated and rain-fed conditions, Proceedings of the Second Symposium on Plantation Crops Research 16th-17th October 2008, Bandaranayake Memorial International conference Hall, Colombo 07, Sri Lanka.
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  • Witharama, W.R.G., Naylor, R.E.L.and Whytock, G.P., (2007). Influence of Planting date and Microsite on weed dynamics in sugarcane in Sri Lanka. Weed Science, 55:23-29.
    https://doi.org/10.1614/WS-05-110.1

  • Witharama, W.R.G (2007). Intercropping Potential of Groundnut, Sweet Melon and Cucumber with sugarcane. Sugar Tech, 9(2 & 3): 170-175.

  • Witharama, W.R.G. (2007). Effect of sprayer nozzles on efficacy and economy of spraying herbicide in sugarcane. Proceedings of the 21st Asia Pacific Weed Science Society Conference, Colombo, Sri Lanka: 513-517.

  • De Silva, A.L.C. and De Costa, W.A.J.M. (2004). Varietal variation in growth physiology and yield of sugarcane under two contrasting water regimes, Tropical Agricultural Research vol.16:1-12. www.pgia.ac.lk › files › Annual_congress › journel › VarietalVariationPDF
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  • De Silva, A.L.C. and De Costa, W.A.J.M. (2004). Varietal variation in growth physiology and yield of sugarcane in Sri Lanka under two contrasting water regimes, International Crop Science Congress, Brisbrane. Australia.
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  • Witharama W.R.G. (2002). Effect of sprayer nozzles on efficacy and economy of spraying herbicide in sugarcane. Proceedings of the 58th Annual Sessions 2nd to 07th December, Part 1 – Abstracts of presentations: 27.

  • Witharama W.R.G. (2001). Studies on crop weed competition in sugarcane, variety Co. 775. Proceedings of the 57th Annual Sessions 26 November to 01 December, Part 1 – Abstracts of presentations: 33.

  • Witharama W.R.G. (2000 & 2001). Effect of some environmental factors on weed seedling emergence in sugarcane in Sri Lanka. Tropical Agriculturists; Journal of the Department of Agriculture-Sri Lanka, Vol. 153: 18-25.

  • Witharama, W.R.G. (2000). Fact Sheet; A quick guidance to a weed of national significance in Sri Lanka – Lantana camara L. A publication of the ministry of Forestry and Environment.

  • Witharama W.R.G. (2000). Association of the seed bank and emerged weeds in sugarcane in Sri Lanka. Proceedings of the 56th Annual Sessions 27th November to 01st December, Part 1 – Abstracts of presentations: 61.

  • Rodrigo, V.H..L, Nugawela, A., Sivanathan, A., Witharama, W.R.G. and Jayasinghe, W. K. (2000). Rubber cum sugarcane intercropping; a suitable cropping system for farmers in the intermediate zone of Sri Lanka. Journal of the Rubber Research Institute of Sri Lanka, 83: 62-74.

  • Witharama, W.R.G. (1998). Studies on weed populations in sugarcane in Sri Lanka. PhD Thesis. University of Aberdeen.
    https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242099

  • Maddumage, P., Ranaweera, K.K.D. and Witharama, W.R.G. (1998).Effect of depth of seed bury on germination and emergence of weed seedlings. Proceedings of the 54th Annual Sessions 14th to 19th December, Part 1 – Abstracts of presentations: 104.

  • Witharama, W.R.G., Naylor, R.E.L. and Whytock, G.P. (1997). The seed bank and weed seedling emergence in sugarcane in Sri Lanka. Proceedings of the Brighton Crop Protection Conference – weeds: 663-664.

  • Witharama, W.R.G., Sangakkara, U.R. and Gunawardena, T.M. (1997). A survey of weed flora in the Sevanagala sugar project area. Sri Lankan J. Agric. Sci. Vol. 34: 105-117.
    http://www.pgia.ac.lk/sites/default/files/congress/journel/v16/VarietalVariation.pdf