Dr. N.P.G. Samantha — Indexed & Peer-Reviewed Publications

Journal Articles

  1. Samantha N.P.G & Upathissa G.K.K.S.Y. (2024). Agricultural Subsidies in Sri Lanka: Analyzing the Fiscal Burden and Implications. Sri Lanka Economic Journal, Vol. 21 (Special Issue).

  2. Samantha, N.P.G. & Liu, H. (2018). The Effect of Foreign Direct Investment on Industrial Sector Growth: Evidence from Sri Lanka. Journal of Asian Development, 4(2).

  3. Samantha, N.P.G. & Liu, H. (2017). The Impact of FDI on the Economic Growth of Sri Lanka: An ARDL Approach to Co-integration. International Journal of Innovation and Economic Development, 3(5), 70–82. DOI

  4. Samantha, N.P.G. & Liu, H. (2018). Does Inward Foreign Direct Investment Promote Export? Empirical Evidence from Sri Lanka. Business and Economic Research, 8(3), 1–18. DOI

  5. Samantha, N.P.G. (2018). The Effect of Foreign Direct Investment on Trade: Empirical Evidence from Sri Lanka. Global Journal of Economics and Business, 5(1), 87–95.

  6. Udari, U.D.R., Perera, M.D.D., Samantha, N.P.G. & Premadasa, D.M.D.S. (2024). Effects of Food Price Inflation on Cost and Affordability of Nutritious Diets in Sri Lanka: The Role of Cash Transfers. Colombo Economic Journal (CEJ), 2(1), 61–72. ISSN 2950-7480 (Print) / 2961-5437 (Online).

  7. Fernando, S.P., Wijesinghe, I.P.P.M., Ruhunuge, I.J.A., Hitihamu, S. & Samantha, N.P.G. (2024). Analyzing Production Cost of Chicken and Eggs in Sri Lanka: A Rapid Assessment 2023. Colombo Economic Journal (CEJ), 2(1), 127–144.

Mr. I.V. Kuruppu — Indexed Journal Articles (2024–2025)

  1. Wathsarani, N., Kuruppu, V. & Guruge, S. (2025). Influence of food traceability systems (FTS) on the perceived value and purchase intention of urban consumers in Sri Lanka's retail chains. Cogent Food & Agriculture, 11(1), 2518614. DOI

  2. Kuruppu, V., Subashini, N., Udayanga, L., Erabadupitiya, N., Ekanayake, H., Najim, M.M.M., Lekamge, S.A. & Alotaibi, B.A. (2025). From risk to resilience: Willingness-to-pay for crop insurance among paddy farmers in the Kurunegala District, Sri Lanka. Sustainability, 17(22), 10389. DOI

  3. Guruge, T.P.S.R., Abeysiriwardana, P.C., Kuruppu, I.V. & Bandara, A.L.J. (2025). Valuing urban wetlands for sustainable land use: Recreational services and economic insights from a travel cost framework. Urban Ecosystems, 28, 166. DOI

  4. Divarathne, H.K.D.M.P.L., Guruge, T.P.S.R., Jayasinghe, K.L.A.M., Abeysiriwardana, P.C., Kuruppu, I.V., Bandara, A.L.J. & Johnson, S.R.E. (2025). Exploring the commercial viability of goat milk from a developing country perspective. Small Ruminant Research, 250, 107559. DOI

  5. Edirisinghe, J.C., Ranjan, H., Herath, H.M.L.K., Jayasinghe-Mudalige, U.K., Wijeratne, M., Kuruppu, V. et al. (2024). Impact of climate on tea yield: An empirical investigation from Sri Lanka. Journal of the National Science Foundation of Sri Lanka, 52(2), 183–190. DOI

Refereed Journal Articles

  1. Wanigapura, T.M., Guruge, T.P.S.R., Kuruppu, I.V. & Abeysiriwardana, P.C. (2025). Diversified impact of electronic word-of-mouth (eWOM) on consumer communities: A developing country perspective. Decision. DOI

  2. Kuruppu, I., Edirisinghe, J.C., Herath, H.M., Jayasinghe-Mudalige, U., Wijesuriya, W., Udugama, J. & Fernando, A. (2015). Farmers' valuation of agro biodiversity in home gardens: A case study in the Kurunagala District. Journal of Environmental Professionals Sri Lanka, 4(1), 72–83. DOI

  3. Kuruppu, I., Edirisinghe, J., Herath, H. & Jayasinghe-Mudalige, U. (2018). Potential policy insights on willingness to accept/pay estimates for agro biodiversity in domestic household level. Sri Lankan Journal of Agricultural Economics, 19(1).

  4. Hewavitharana, S.D., Kuruppu, I. & Priyankara, E.A.C. (2022). Assessment of Sri Lankan cinnamon export competitiveness in the global market. Sri Lankan Journal of Agricultural Economics, 23(1).

  5. Ruhunuge, I.J.A., Wijeratne, A.W., Esham, M., Fernando, S.P. & Kuruppu, I.V. (2024). Exploring climate-driven price variations in carrots: A VAR model. Colombo Economic Journal, 2(2).

  6. Hettiarachchi, G.R.P. & Kuruppu, I. (2023). Evaluating the impact of bilateral trade agreements on Sri Lanka's export performance: Gravity model approach. Sri Lankan Journal of Business Economics, 12(2).

  7. Gangewatta, I.I., Kuruppu, I. & Wijeratne, D.U.S. (2023). Factors affecting urban consumer intention towards online purchasing of agricultural commodities in Sri Lanka. Journal of Management, Social Sciences and Humanities, 4(1).

  8. Kuruppu, V. & Chathuranga, V. (2021). Factors affecting the utilization of information and communication technology (ICT): A case of Badulla and Nuwara Eliya potato farming community, Sri Lanka. International Journal of Information and Communication Sciences, 6(4).

  9. Kuruppu, I. (2018). Restructuring extension on herbicide usage of paddy farmers in Anuradhapura District. Applied Economics and Business, 2(2).

  10. Kuruppu, I. (2017). Consumer preference and price behaviour analysis for selected rice varieties in Sri Lanka. Applied Economics and Business, 1, 1–11.

  11. Wijesooriya, W., Champika, P. & Kuruppu, I. (2020). The paddy farmers' channel choice and links to the public and private marketing channels in Sri Lanka. Applied Economics and Business, 4(1).

Book Chapters

  1. Guruge, T.P.S.R. & Kuruppu, I.V. (2025). Economically synchronized protection of coastal and marine ecosystems using an action impact matrix. In: Handbook of Sustainable Blue Economy (pp. 1–26). Springer Nature.

  2. Herath, H.M.L.K., Premarathne, N.M.K.C., Kuruppu, I.V. et al. (2025). The economic value of ecosystem services arising from tank cascade systems. In: Tank Cascade Systems of Sri Lanka: A Globally Important Agricultural Heritage System (pp. 73–90). CRC Press.

  3. Koliba, C., Herath, H.M.L.K., Esham, M., Kuruppu, V. & Kumara, D. (2025). Governance of village tank cascade system restoration. In: Tank Cascade Systems of Sri Lanka (pp. 424–438). CRC Press.

  4. Anjalee, G.H.I., Kuruppu, I.V., Edirisinghe, J.C., Jayasinghe, J.M.U.K. & Herath, H.M.L.K. (2024). A glimpse into the agriculture economy in the crisis year. In: Rising with Agriculture: Challenges and New Perspectives (pp. 1–26). Wayamba University.

  5. Kurera, M.J.M.S. & Kuruppu, I.V. (2024). Revolutionizing agriculture: Harnessing the power of nanotechnology for sustainable agriventures. In: Achieving a Circular and Sustainable Bioeconomy (pp. 23–55). Institute of Biology, Sri Lanka.

Policy Briefs

  1. Kuruppu, I.V. & Herath, K. (2024). Sustainable value chain development in village tank cascade systems (VTCS). In: Way Forwards to Revitalize Village Tank Cascade Systems in Sri Lanka (pp. 75–79). The Healthy Landscape Project, Ministry of Environment.

  2. Sovis, W.A.V., Kuruppu, I.V., Jayakodi, A. & Herath, H.M.L.K. (2020). Value chain analysis of groundnut production in Mullaitivu District. In: Policy Briefs of Agribusiness Research (pp. 45–46). Wayamba University.

Mr. Nalaka Wijesooriya — Peer-Reviewed & Institutional Publications

  1. Wijesooriya, N. & Kuruppu, V. (2022). Milling Economics & Concentration of Market Power in Major Rice Milling Zone Polonnaruwa, Sri Lanka. Sri Lanka Statistical Review, 1(1), 27–42. Department of Census and Statistics.

  2. Wijesooriya, N., Kuruppu, V. & Priyadarsane, D. (2021). Rice Value Chain in Polonnaruwa, Sri Lanka. Hector Kobbekaduwa Agrarian Research and Training Institute (HARTI).

  3. Wijesooriya, W.A.N., Champika, P.A.J. & Kuruppu, I.V. (2020). The Channel Choice of Paddy Farmers' Links to the Public and Private Marketing Channels in Sri Lanka. Journal of Applied Economics and Business, 4(1), 60–70. Wayamba University.

  4. Wijesooriya, N., Champika, J., Priyadarshana, W.H.D. & Vidanapathirana, R. (2017). Government Intervention in Paddy Marketing: Issues in Purchasing and Post Stock Management. HARTI.

  5. Wijesooriya, N. & Champika, J. (2015). Agricultural Forward Contracts as Pre-Harvest Commodity Marketing: Problems and Prospects. HARTI.

  6. Wijesooriya, W.A.N. & Priyadarshana, W.H.D. (2013). Structure Conduct and Performance of Rice Milling Industry in Sri Lanka. HARTI.

  7. Wijesooriya, W.A.N. (2014). Structure Conduct and Performance of Rice Milling Industry in Sri Lanka. International Journal of Economics and Management Engineering, 8(8). waset.org/6174

  8. Wijesooriya, W.A.N. (2018). Rice Consumption in Sri Lanka. FOODINC, Vol. 2. University of Sri Jayewardenepura.

Dr. T.A. Dharmaratne — Selected Publications

  1. Wickramasinghe, G. & Dharmaratne, T.A. (1997). Recent Socioeconomic Development: Macroeconomic Reforms and Poverty Alleviation. Asia-Pacific Journal of Rural Development, VII(1). CIRDAP, Dhaka, Bangladesh. (Second Author)

  2. Dharmaratne, T.A. (1993). Optimum Use of Fish Resources in Sri Lanka. Economic Review, 18(7–9). People's Bank, Colombo.

  3. Dharmaratne, T.A. (1997). Resources Based Economic Activities of Rural Women in Puttlam District in Sri Lanka. Research Study No. 152. ARTI, Colombo. (First Author)

  4. Dharmaratne, T.A. (1995). Self-Employment: An Answer to the Problem of Poverty in Rural Women in Sri Lanka. Economic Review, 21(5). People's Bank, Colombo.

  5. Dharmaratne, T.A. (1998). Economics of Big Onions Production and Marketing in Sri Lanka. Economic Review. People's Bank, Colombo.

  6. Dharmaratne, T.A. (1999). Paddy Marketing in Sri Lanka. Economic Review. People's Bank, Colombo.

  7. Dharmaratne, T.A. (2003). Electronic Commerce and Marketing Management: Worldwide Web Based Marketing in an Era of Information Technology. Economic Review. People's Bank, Colombo.

  8. Dharmaratne, T.A. (2010). Wonder of Dragon: New Economic Reform and Recent Economic Development Trends in China Economy in the Period of New Millennium. Felicitation volume for Prof. Dayananda Somasundaram, University of Sabaragamuwa.

Institutional Research Reports (Selected)

Food Security & Crisis Response

  • Samantha, N.P.G. et al. (2023). Effect of Economic Crisis on Household Food Security in Sri Lanka. Research Report No. 258. HARTI.

  • Samantha, N.P.G. et al. (2025). Evaluation of The Effects of Economic Crisis on Fruits and Vegetable Sector Production and Marketing. Research Report No. 266. HARTI.

  • Samantha, N.P.G. et al. (2024). Poultry Feed Production in Sri Lanka: Effects of Economic Crisis, Response and the Way Forward. Research Report No. 262. HARTI.

Value Chain & Market Analysis

  • Samantha, N.P.G. (2022). Soybean Value Chain: Unraveling Issues and Mapping Pathways to Greater Efficiency. Working Paper No. 16. HARTI.

  • Priyadarshana, D., Vidanapathirana, R. & Samantha, N.P.G. (2015). An Analysis of Marketing Margins and Marketing Efficiency: Marketing Channels of Potato and Red Onion in Sri Lanka. Research Report No. 187. HARTI.

  • Samantha, N.P.G. & Wijesooriya, W.A.N. (2016). Need Assessment of Agricultural Market Information. Working Paper No. 8. HARTI.

Fiscal & Agricultural Policy

  • Samantha, N.P.G. & Priyankara, E.A.C. (2021). OFCs in the Intermediate Season: Cultivation Issues in Selected Districts. Working Paper No. 15. HARTI.

  • Samantha, N.P.G. (2014). Impact and Lessons of Dairy Development Intervention: Dry Zone Livelihood Support and Partnership Programme (2006–2012). Research Report No. 170. HARTI.