Publications – Crop and Resource Management

  • 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.

  • 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.
    http://www.springerlink.com/openurl.asp?genre=article&id=doi:10.1007/s12355-012-0148-y

  • 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.

  • 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.

  • 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)

  • 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.

  • 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.
    www.springerlink.com/index/33v27204R2W81226.pdf

  • 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.

  • 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.

  • 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 .

  • 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.

  • 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 .

  • 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. Colombo, Sri Lanka.  pp 189-199.

  • 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.

  • 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 .

  • 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.
    http://www.asiajol.info/index.php/record/view/23001
    http://www.sljol.info/index.php/TARE/article/view/2798

  • De Silva, A.L.C. (2008a). 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. (2008a). Evaluation of Agronomic traits, their correlation to yield and ratoononing ability of near commercial sugarcane varieties under supplementary irrigated and rainfed conditions, Proceedings of the Second Symposium on Plantation Crops Research  16th-17th October 2008, Bandaranayake Memorial International conference Hall, Colombo 07, Sri Lanka.

  • 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.

  • 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. (2004a). Varietal variation in growth physiology and yield of sugarcane under two contrasting water regimes, Tropical Agricultural Research vol.16:1-12.

  • De Silva, A.L.C. and De Costa, W.A.J.M. (2004b). Varietal variation in growth physiology and yield of sugarcane in Sri Lanka under two contrasting water regimes, International Crop Science Congress, Brisbrane. Australia.Web site
    www.regional.org.au/au/cs/2004/poster/1/1/1166desilvaalc.htm

  • 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.

  • 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