- llangakoon T.K. and Somaratne, J.M.N.P.2014. Variation in morpho-physio traits of selected rice (Oryza sativa L.) germplasm in response to water stress during the vegetative stage. Annals of the Sri Lanka Department of Agriculture. 16:45-57
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- Piyasiri, C.H., Weerakoon, W.M.W., Dissanayake, D.M.N., Keerthisena, R.S.K., Illangakoon, T.K., Geethika, W.M.U.S., Walisinghe, R. Seneviatne, S.A., Somarathne, J.M.N.P. and Abeysundara, M.D. 2015. Bg 251 as a drought tolerant, short age rice variety for moisture stressed rainfed areas. Annals of Sri Lanka Department of Agriculture. 17:43-46.
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- Wasala,S.K., Ubeysekara, N.M., Gunasekara, P.S., Wickramasooriya, N.K., Senavirathne, S.I., Karunaratne, S.P.,Senavirathne, C.M., Silva, L.C., Senanayake, D.M.J.B., Illangakoon, T.K., Somaratne, N.P. and Abeynayake, N.R. 2015. Screening of rice germplasm for response to drought at reproductive stage under induced drought stress conditions. Annals of Sri Lanka Department of Agriculture. 17:47-50.
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- Illangakoon, T.K., Somaratne, J.M.N.P., Paththinige, S.S., Keerthisena, R.S.K., Piyasiri, C.H., Abeysundara, M.D. and Thushara, I.H. (2016). Diversity and correlation among agronomic traits in newly improved rice varieties under drilling and random broadcasting. Tropical Agriculturist. 164:29-45
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- Illangakoon, T.K., Ella, E. S., Ismail, A.M., Marambe, B., Keerthisena, R.S.K., Bentota, A.P., andKulatunge, S. (2016). Impact of variety and seed priming on anaerobic germination-tolerance of rice varieties in Sri Lanka. Tropical Agriculture Research. 28(1):26-37
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- Illangakoon T.K., R.S.K. Keerthisena, A.P. Bentota, C.H. Piyasiri and J.M.N.P. Somarathne (2017). Variability in maturity duration and yield of some popular rice varieties over climatic zone, season and location. Annals of Sri Lanka Department of Agriculture. 19 (1):1-15.
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- lllangakoon, T.K., J.M.N.P, Somaratne, R.S.K. Keerthisena, M.D. Abeysundara, C.H. Piyasiri, and V. Kumar, (2017). Impact of varieties, spacing and seedling management options for growth and yield of mechanically transplanted rice. Annals of Sri Lanka Department of Agriculture. 19 (1):112-128.
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- Illangakoon, T. K., J.M.N.P. Somarathne, S.S. Paththinige, C. H. Piyasiri, R. S. K. Keerthisena,A.P. Bentota, U.A.K.S. Udawela, W.M.W. Weerakoon, and B. Marambe, (2017). Screening of rice lines for drought resistance under imposed drought stress during the reproductive and grain filling stages. Proceedings of the 1st International Symposium on Agriculture, Eastern University, Sri Lanka. 6th October 2017. Pp 11-24.
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- Illangakoon, T. K., B. Marambe, R.S.K. Keerthisena, A.P. Bentota, S. Kulatunge,V. Kumar and A. Ismail.(2018). Performance of Anaerobic Germination-Tolerant Rice Varieties in Direct Seeding: Effects on Stand Establishment, Weed Growth and Yield under Different Seeding Rates. Tropical Agriculture Research 29(3): 276-287
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- Illangakoon, T.K. J.M,N,P somaratne, R.S.K. Keerthisena, N.L. Sudheera, W.U.S. Geethika, C.H. Piyasiri , Y.P.A.K.Y. Rajarathne, M.D. Abeysundara and V Kumar. 2018 Ccomparative performance of growth, yield and profitability of mechanically transplanted rice. Tropical Agriculturist 166 (2):1-18.
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- Illangakoon, T.K., B. Marambe, R.S.K. Keerthisena, A.P. Bentota, C.H. Piyasiri, J.M.N.P. Somarathne, W.U.S. Geethika and V.Kumar. 2019. Agronomic management practices to enhance crop establishment, grain yield and weed suppression in flooded-Direct seeded rice. Tropical Agriculturist. 167:.
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- W. M. W. Weerakoon, T. N. N. Priyadarshani, C. H. Piyasiri and L. S. Silva (2009). Impact of Water Saving Irrigation Systems on Water Use, Growth and Yield of Irrigated Lowland Rice.Proceedings of the National Conference on Water, Food Security and Climate Change in Sri Lanka, BMICH, Colombo June 9-11, 2009.
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- Piyasiri C.H., W.M.W. Weerakoon, D.M.N. Dissanayake, L.C. Silva, T.N.N. Priyadarshini, W.M.U.S. Geethika, M.Y.A.S. Rathnayake and H.A.N.S. Hettiarachchi. 2012. Rice varieties for moisture stressed ecosystems. Annals of Sri Lanka Department of Agriculture 14:97-113.
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- Weerakoon W.M.W., Maruyama A., Ohba, K. (2008) Impact of humidity on temperature induced grain sterility in rice (Oryza sativa L.) J of Agro.and Crop Sci., pp 135-140
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- Weerakoon WMW, Ingram KT and Moss D (2005) Atmospheric CO2 concentration effects on N partitioning and fertilizer N recovery in field grown rice (Oryza sativa L.) Agriculture Ecosystem & Environment.,108, 342-349
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- WMW Weerakoon, WAJM de Costa and DS de Z Abeysiriwardena(2005)Physiological responses of Indica rice varieties to increased atmospheric CO2 and temperature, Journal o f Agro Meterol. 60(5), 601-604
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- Weerakoon W.M.W., Maruyama A., Ohba, K. (2002) Impact of high Temperature during flowering on grain formation in Indica and Japonica rice.Proceeding of the meeting on Environmental Engineering in Agriculture, Graduate school, University of Tokyo, Tokyo, Japan. August 6th to 8th 2002
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- Weerakoon W.M.W., Maruyama A., Ohba, K. (2002) Effect of Atmospheric Relative Humidity and Wind on high Temperature induced spikelet fertility of Japonica and Indica rice. Proceedings of the association of Kyushu Agricultural Research Scientists, September 19, 2002, Isahaya, Nagasaki.
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- Weerakoon WMW (2002) Maximize rice yield through minimizing removal, 2002. Rice Technoguide, Rice Research & Development Institute, Sri Lanka
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- Weerakoon WMW. (2002) .Water stress Effects, Water management systems Irrigation requirement of rice in Sri Lanka. Rice technoguide, Rice Research & Development Institute, Sri Lanka.
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- Weerakoon W M W, Ingram K T and D N Moss (2000) Atmospheric carbon dioxide and fertilizer nitrogen effects on radiation interception by rice.Plant and Soil. 220: 99-106.
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- Weerakoon WMW, AAbeysekara and C Wijesundera (2000) Agronomic strategies to increase rice yields in Sri Lanka. Annual symposium of the Department of Agriculture, Sri Lanka. 2: 435-451
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- Weerakoon W M W. Olsyzk D. Moss D., 1999. Effect of Nitrogen nutrition on response of rice seedlings to Carbon Dioxide. Agriculture Ecosystem & Environment, 72(1):1-8,
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- Weerakoon W MW, (1999) Effect of stocking density and feeding on growth and survival of carp fry in low land rice paddies. Annual symposium of the Department of Agriculture, Sri Lanka. 1; 71-78.
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- Weerakoon W M W, (1999) Present status and problems of nitrogen fertilizer management in rice in Sri Lanka. In proceedings of the International workshop on innovative nitrogen and other crop management techniques for intensive rice systems of South Asia, Thanjavur, India, 24-27 August 1999.
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- Costa de WAJM, Weerakoon WMW, Abeywardena RMI and Herath HMLK (2003) Response of photosynthesis and water relations of rice (Oryzasativa L) to elevated atmospheric CO2 in sub humid zones of Sri Lanka. J Agronomy and Crop Science, 189 ; 71-82
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- Costa de WAJM, Weerakoon WMW, Herath HMLK and Abeywardena RMI (2003) Response of growth and yield of rice (Oryzasativa L) to elevated atmospheric CO2 in sub humid zones of Sri Lanka. J Agronomy and Crop Science, 189 ; 83-95
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- De Costa, W.A.J.M., Weerakoon, WMW.,Herath, H.M.L.K., Amaratunga, K.S.P. and Abeywardena, R.M.I. (2006). Physiology of yield determination of rice under elevated carbon dioxide at high temperatures in a subhumid tropical climate.Field Crops Research 96:336-347.
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- Subasinghe A. Nissanka, NAASP and Weerakoon WMW (2007).Identification of salt tolerant rice varieties at the seed germination stage and its relationship to seed husk thickness and iron absorption. Tropical Agricultural Research, 19, 219-228.
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- Olszyk D., C Wise and WMW Weerakoon (1993) Effect of CO2 and Temperature on five rice cultivars. J. Agr. Met. 48(5):787-790.
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- Weerakoon WMW, Wickramasinghe WMADB, Bandara KMC, Mutunayake MP and Laddha JK (2006). Constraints to maximize production and resource utilization efficiencies of direct seeded lowland rice (Oryzasativa L.) in Sri Lanka. Proceedings 2nd International Rice Congress, 9 -13 October, New Delhi, India.
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- Weerakoon WMW (2008) Future of rice with limited water in Sri Lanka, Proceedings of the Soil Science Society symposium, May 2008.
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- Weerakoon WMW (2008) Impact of climate change on rice cultivation in Sri Lanka. National workshop on climate change on Agriculture, ISTI, Gannoruwe, May 22, 2008.
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- Weerakoon WMW, Priyadarshini TNN, Piyasiri CH and LS Silva (2009), Impact of water saving irrigation systems on water use, growth and yield of irrigated lowland rice. Paper submitted to the “Water. Food security and climate change in Sri Lanka. 9 – 11 June 2009
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- Weerakoon WMW (2009) Future challenges for rice cultivation in Sri Lanka. Paper submitted to the “Water. Food security and climate change in Sri Lanka. 9 – 11 June 2009
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- Weerakoon W.M.W., T Abeywickrama, WAJM de Costaand A. Maruyama (2009) Out-crossing of heat stress affected spikelets of lowland rice in the sub-humid one of Sri Lanka and its long-term implications. Proceedings of the International workshop on “Challenges for Agro-Environmental research in Monsoon Asia” October 5-9, Tsukuba, Japan.
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- Weerakoon WMW, Priyadarshani TNN, Piyasiri CH and LC Silva (2010). Impact of water saving irrigation systems on water use, growth and yield of irrigated lowland rice.Annals of the Department of Agriculture, Sri Lanka 2010. 12:213-222
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- Silva L.C., Subasinghe A., Weerakoon W.M.W., Piyasiri C.H. and Basnsyake B.M.M.P. Effect of Air temperature on spikelet opening duration of the panicl and grainfilling characteristics of rice (Oryza sativa L.). Proceeding s of second national symposium 2009,Faculty of Agriculture, University of Ruhuna.
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- Silva L.C., Karunasena D.D.N.P., Weerakoon W.M.W., Piyasiri C.H and Subasinghe A., Effect of seed incubation on seedling establishment and emergence of different rice varieties under submerge condition. Rice congress 2010. Sri Lanka. Abstract of posters p:37-38.
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- Silva L.C., Weerakoon W.M.W., Basnsyake B.M.M.P., Subasinghe A., Effect of late planting and air temperature on physiological maturity of different rice varieties. Rice congress 2010. Sri Lanka. Abstract of posters p:39-40.
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- Silva L.C.,Weerakoon W.M.W., Piyasiri C.H. Dasanayake D.M.N.D., Basnsyake B.M.M.P. and W.M.U.S.Geethika. Effect of low night temperature on pollen and spikelet sterility in field grown rice (Oryza sativa L.).Annals of Sri Lanka Department of Agriculture 2012.14:135-143.
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- Bandara W.M.J. and L.C. Silva.Rice crop response to Zn application in Low HumicGlay soils of Low Country Intermediate zone Annals of Sri Lanka Department of Agriculture 2001. 3:9-18.
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- Bandara W.M.J. and L.C. Silva.An assessment of micronutrient requirement for rice grown in Low HumicGlay soils in low country dry zone.Annals of Sri Lanka Department of Agriculture 2000. 2:35-46.
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- Bandara W.M.J., D.B. Wickramasinghe andL.C. Silva. Effect of applied Zn on N use efficency , growth and yield of rice grown in Low HumicGlay soils of low country intermediate zone. . Annals of Sri Lanka Department of Agriculture 2004. 6:39-47.
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- Bandara W.M.J., D.B. Wickramasinghe., D.N.Sirisena andL.C. Silva. Effect of applied P on Zn availability , growth and yield of rice grown in Low HumicGlay soils of low country intermediate zone. Annals of Sri Lanka Department of Agriculture 2003. 5:323-332.
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- S.P.Gunarathna, K.V.Wickramasingha, B.K.Kannagara, K.K.D.Chandrasekara, A.E.Munasinghe, N.M.L.D. Nagasena, D.M.S.Duminda, C.H.Piyasiri, H.M.C.Hitinayake, L.C. Silva, D.M.Withanawasam and Y.B.Iqubal. Poster.Protien and Micronutrient content of selected rice varieties grown in different agro –ecological regions in Sri Lanka. Annals of Sri Lanka Department of Agriculture 2016, 18:294.
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