Chatura Ariyaratne’s research includes the effects of government payments, depreciation, and inflation on crop farm machinery and equipment investment behavior; policy implications of reduced availability of irrigation water and rising pumping costs due to groundwater depletion; the role of changing prices, technology, and climate on aquifer depletion, and the performance and impacts of different water management policies; factors associated with structural changes in farmer cooperatives; and risk, profitability, and efficiency in agricultural cooperatives under allocated and unallocated equity.