• Households’ Preferences for Private Tuition Attributes in Jaffna Municipal Area, Sri Lanka 

  Vanaiya, S.; Sivashankar, S.; Sooriyakumar, K.; Sarujan, S. (National centre for advanced studies in Humanities and Social sciences, 2024)

  In Sri Lanka, there has been growing competition for university admission, and due to this, private tuition plays a vital role in many students' educational journeys. This study investigates households' preferences for ...
• Water access and its implications on farm production: Evidence from Hakwatuna irrigation system in Kurunegala district, Sri Lanka 

  Jayaweera, P.T.U.; Sarujan, S.; Sivashankar, S.; Sooriyakumar, S. (Uva Wellassa University, 2025)

  Water scarcity has become a global challenge due to adverse changes in the climatic conditions along with the anthropogenic impacts on traditional irrigation systems. As a result, the farmers livelihoods are highly affected ...
• Impact of sprinkler irrigation on yield and cultivation costs in ground nut and jumbo peanut farming in Kilinochchi 

  Lathusha, T.; Sooriyakumar, K.; Sivashankar, S.; Sarujan, S. (Eastern University, Sri Lanka, 2025)

  The adoption of climate-smart agricultural practices has become essential for mitigating the challenges posed by climate change in dry-zone agriculture. However, the effectiveness of these practices remains uncertain due ...
• Assessing the Impact of Subsidy loans from Rotary Club on Paddy farmers’ productivity in Kilinochchi, Sri Lanka 

  Ratheeban, P.; Sooriyakumar, K.; Sarujan, S.; Sivashankar, S. (Wayamba University of Sri Lanka, 2025)

  Agricultural credit is aimed to improve farm productivity of small-scale farmers. However, the effectiveness of agricultural credit remains questionable due lack of credit access and awareness on formal credit channels, ...
• Local communities’ preferences and willingness to pay for improving tourist facilities and conservation of ecosystem in Arugambay lagoon, Sri Lanka 

  Misfa, S.L.F.; Sivashankar, S.; Sooriyakumar, K.; Sarujan, S. (Wayamba University of Sri Lanka, 2025)

  Arugam Bay lagoon holds an economic and ecological value and supports tourism and biodiversity. This study used the choice experiment approach to investigate the local communities' preferences and willingness to pay for ...
• Production efficiency of the local paddy cultivation under Valaichenai agrarian services centre area 

  Rimsath, M.; Sooriyakumar, K.; Sarujan, S. (Wayamba University of Sri Lanka, 2025)

  This study focuses on measuring the technical efficiency of paddy cultivation, to explore ways of increasing yield and productivity under Valaichenai agrarian services centre area. Primary data was used in this study. The ...
• Households’ demand for disaggregated meat products in Sri Lanka: A Censored Quadratic Almost Ideal Demand System Model 

  Musthifa, B.; Sivashankar, S.; Sooriyakumar, K.; Sarujan, S. (Wayamba University of Sri Lanka, 2025)

  The economic crisis and increased prices for essential goods have severely affected consumption patterns of meat products in Sri Lanka. Therefore, this study aims to estimate demand for disaggregated meat products. This ...
• Estimating households’ willingness to pay for composting of solid waste: A choice experiment approach 

  Gurupatham, W.E.S.; Sivashankar, S.; Sooriyakumar, S.; Sarujan, S. (University of Sri Jayewardenepura, 2025)

  Rapid urbanization and a growing population cause difficulties in managing household waste in Sri Lanka. Improper management of household waste adversely affects both the environment and public health. Composting is an ...
• Impact of the Adoption of Photovoltaic System on Households’ Energy Consumption 

  Hariskar, R.; Sooriyakumar, K.; Sivashankar, S.; Sarujan, S. (2025)

  Adoption of renewable energy sources plays a vital role to mitigate the climate risks and foster environmental stability. Photovoltaic system (PV) is a classic example of renewable energy sources and a potential alternative ...
• Effect of war for community participation in mangrove restoration in northern Sri Lanka: Mechanisms and heterogeneity 

  Sarujan, S.; Sakurai, T. (University of Tokyo, 2024)

  Community participation in environmental restoration is an important step in the postwar recovery as war-affected communities entirely depend on the existing natural resource base to restart their economic activities. At ...
• Effectiveness of community participation in Mangrove restoration: the evidence from northern Sri Lanka 

  Sarujan, S.; Sakurai, T. (Springe, 2023)

  As a result of the past failures in centralized management, community-based management approach was evolved as a better alternative in Mangrove management. However, effectiveness of community-based Mangrove management ...
• Fisherman’s Willingness to Pay for Sustainable Lagoon Ecosystem Management: A Locality Study in Jaffna Lagoon of Sri Lanka 

  Krishnapillai, S.; Sarujan, S.; Sivashankar, S. (World Scientific Publishing Europe Ltd, 2022)

  This study estimates willingness to pay (WTP) for different sustainable ecosystem management measures in the Jaffna lagoon. For this study, 118 fishermen were randomly selected along the lagoon. Choice modelling approach ...
• Performance of community-based tank irrigation system and its determinants: Evidence from Tamil Nadu, India 

  Sarujan, S.; Kajisa, K.; Sakurai, T. (Institute of Developing Economies, 2023)

  Irrigation tanks are classic examples of common pool resources that have been traditionally managed by local communities. However, the tank performance under community management in Tamil Nadu has declined over the last ...
• Efectiveness of community participation in Mangrove restoration: the evidence from northern Sri Lanka 

  Sarujan, S.; Sakurai, T. (Springer, 2024)

  As a result of the past failures in centralized management, community-based management approach was evolved as a better alternative in Mangrove management. However, effectiveness of community-based Mangrove management ...
• Local Fishermen’s Willingness to Accept Compensation for Commercial Sea Cucumber Farms in Jaffna Lagoon, Sri Lanka 

  Balamauran, R.; Sooriyakumar, K.; Sivashankar, S. (University of Jeyewardenepura, 2024)

  This study aims to investigate local fisherman’s willingness to accept compensation for commercial sea cucumber farms in Jaffna Lagoon, Sri Lanka, and analyse the factors influencing the selected attributes for this ...
• A measure of marketing price transmission in the Red Onion Market of Sri Lanka 

  Mathusuthan, K.; Sooriyakumar, K. (International Journal of Environmental & Agriculture Research, 2017)

  In the past there were several protectionist trade policies to safeguard the local onion production. This study examines their impact by means of nominal and effective protection rates and competiveness in resource ...
• Farmers’willingness to pay for the ecosystem services of organic farming a locality study in valikamam area of sri lanka 

  Sooriyakumar, K.; Sivashankar, S.; Sireeranhan, A. (APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH, 2019)

  This study investigates the farmers’ willingness to pay for ecosystem services of organic farming in Valikamam area of Sri Lanka. Choice modeling employed indicates that farmers are willing to pay more for big reduction ...
• Households’ willingness to pay for quality of drinking water in Jaffna area of Sri Lanka 

  Sooriyakumar, K.; Sumangkalai, P.; Sivashankar, S. (Journal of Water Supply: Research and Technology, 2020)

  Jaffna Peninsula of Sri Lanka depends on groundwater for drinking water. Supply of clean drinking water has become limited due to overuse of agrochemicals, widespread use of pit latrines, and seawater intrusion. The aim ...
• Impact of Auto industry and its spatial spillover effect on Alabama's Economic Growth and Development 

  Sooriyakumar, K.; Kinnucan, H. (Regional Science Inquiry, 2020)

  This paper studies the effect of automobile production on Alabama's economy. A Spatial panel simultaneous equations model was developed using country data. The empirical findings suggest that automobile production increase ...
• Inter Linkages among Agriculture, Manufacturing and Service Sectors: Empirical Evidence from Sri Lanka’s Provincial Economies 

  Sooriyakumar, K.; Poonkulaly, S.; Sireeranhan, A. (University of Jaffna, 2015)

  This study examines the relationships among agriculture, manufacturing and service sectors of Sri Lanka’s provinces. Annual data from 2000 to 2013 for nine provinces of Sri Lanka were used to develop a Panel Vector Error ...

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