4.Journals Published in Sri Lanka
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Item An econometric study of the world rubber economy(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 1993) Samarappuli, I.N.; Bogahawatte, CItem The economics of replanting in rubber plantations part I. cost of immature upkeep(Rubber Research Institute of Sri Lanka. Agalawatta, 1997) Samarappuli, I.N.; Wickramaratne, C.S.Item Recent trends in the world rubber economy(Rubber Research Institute of Sri Lanka. Agalawatta, 1995) Samarappuli, I.N.This paper examines the recent trends in the world rubber economy in relation to consumption, production, trade and prices. The contents of this study may provide some insight for those involved in the formulation of economic policies to develop the world rubber economy in general and Sri Lankan rubber economy in particular.Item The economics of replanting in rubber plantations part II. cost of mature upkeep(Rubber Research Institute of Sri Lanka. Agalawatta, 1997) Samarappuli, I.N.; Wickramaratne, C.S.Item Effect of Asian currency crisis on the rubber industry of Sri Lanka(Rubber Research Institute. Agalawatta, 1999) Tillekeratne, L.M.K.; Samarappuli, I.N.Item The economics of replanting in rubber plantation Pt. II. financial and sensitivity analysis(Rubber Research Institute. Agalawatta, 1998) Samarappuli, I.N.; Wickramarathne, C.S.Item Economics of interplanting rubber with tea in the low country wet zone(Rubber Research Institute of Sri Lanka. Agalawatte, 1995) Yogaratnam, N.; Samarappuli, I.N.; Iqbal, S.M.M.This study examines the economic viability of interplanting rubber with tea in the low country wet zone, where cultivation of both these crops is agronomically feasible. In the analysis, apart from Net Present Value(NPV), other measurments of project worth have also been used to determine the return on investment. Economic lifespan of a 25 years is considered for discounted cash flow analysis. The results reveal the profitability of this intergrated farm activity, which generates a NPV of nearly RS 162,000 at 15 per cent discount rate. The B/C ratio, net benefit investment ratio and IRR are 1.24, 3.73 and 31 per cent respectively. The pay back period of 5 years also emphasizes the economic feasibility of the investment. Sensitivity analysis on certain parameters have been done to ascertain the economic viability. The conclusion is that commencement of interplanting rubber with tea in the law country wet zone, atleast on a limited scale is economically desirable.