المؤلفون: M. G. D. Abeysekara, D. V. P. Prasada, P. M. E. K. Pathiraja

المصدر: Tropical Agricultural Research, Vol 31, Iss 1, Pp 1-12 (2020)

مصطلحات موضوعية: coconut, elasticity, partial equilibrium model, seemingly unrelated regression, Agriculture

الوصف: The objective of this paper is to assess the equilibrium relations in the fresh nut, oil and Desiccated Coconut (DC) market in Sri Lanka with special emphasis on determining the supply and demand elasticities. To achieve this objective, the Partial Equilibrium Model (PEM) previously adopted for the Sri Lankan coconut industry was reestimated using Seemingly Unrelated Regression (SUR) method. Annual data on prices, quantities and other supply and demand related data for the period 1956-2017 were used for the analysis. The PEM captures the linkages in both production and consumption between the three markets. The results revealed that estimations are consistent with previous studies except for the income variable in demand equations for both fresh and oil markets where only the latter is statistically significant with negative coefficient indicating that oil has become an inferior good. Both the own price elasticity of supply and demand of fresh nut and oil were statistically significant with comparatively lower magnitudes whereas it was significant and higher in the DC market. When compared with the previous studies, the findings of the present study revealed that the magnitudes of the supply and demand elasticities in all three coconut markets have changed over the past decade and implications of those changes are further observed in the changes of directions of supply and demand relationships. Therefore, the coconut market model may also be extended further by incorporating other important sub-sectors as well.

وصف الملف: electronic resource

العلاقة: https://tar.sljol.info/articles/8339Test; https://doaj.org/toc/1016-1422Test

الوصول الحر: https://doaj.org/article/3d2bb88903f343a796e30f3436afd14fTest

المؤلفون: D. V. P. Prasada, M. G. D. Abeysekara, P. M. E. K. Pathiraja

المصدر: Tropical Agricultural Research, Vol 31, Iss 1, Pp 1-12 (2020)

مصطلحات موضوعية: Nut, lcsh:Agriculture, Partial equilibrium, Economics, lcsh:S, coconut, elasticity, partial equilibrium model, seemingly unrelated regression, Market model, Seemingly unrelated regressions, Desiccated coconut, Sri lanka, Inferior good, Agricultural economics, Supply and demand

الوصف: The objective of this paper is to assess the equilibrium relations in the fresh nut, oil and Desiccated Coconut (DC) market in Sri Lanka with special emphasis on determining the supply and demand elasticities. To achieve this objective, the Partial Equilibrium Model (PEM) previously adopted for the Sri Lankan coconut industry was reestimated using Seemingly Unrelated Regression (SUR) method. Annual data on prices, quantities and other supply and demand related data for the period 1956-2017 were used for the analysis. The PEM captures the linkages in both production and consumption between the three markets. The results revealed that estimations are consistent with previous studies except for the income variable in demand equations for both fresh and oil markets where only the latter is statistically significant with negative coefficient indicating that oil has become an inferior good. Both the own price elasticity of supply and demand of fresh nut and oil were statistically significant with comparatively lower magnitudes whereas it was significant and higher in the DC market. When compared with the previous studies, the findings of the present study revealed that the magnitudes of the supply and demand elasticities in all three coconut markets have changed over the past decade and implications of those changes are further observed in the changes of directions of supply and demand relationships. Therefore, the coconut market model may also be extended further by incorporating other important sub-sectors as well.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88d7bc437082bb36a7e504aa7a0372b7Test
https://tar.sljol.info/articles/8339Test

المؤلفون: Jeevika Weerahewa, K.V.N.N. Jayalath

المصدر: Tropical Agricultural Research, Vol 25, Iss 4 (2015)

مصطلحات موضوعية: Commercial policy, Price elasticity of demand, food.ingredient, business.industry, Partial equilibrium, Coconut oil, lcsh:S, Tariff, Raw material, Domestic market, Agricultural economics, coconut oil, desiccated coconut, endogenous tariff, lcsh:Agriculture, food, Agriculture, Economics, business

الوصف: Fresh coconut is the main raw material for the production of coconut oil and desiccated coconut. A close examination of the import policy of the Sri Lankan government on edible oils indicates that import tariffs on edible oil are lowered when the supply of fresh coconut in the domestic market is limited. It has been claimed that the desiccated coconut producers lobby for lower import tariffs on edible oil so as to raise fresh coconut availability when the demand for desiccated coconut is higher. The objective of the study is to determine whether there is a relationship between import tariff on edible oil and export price of desiccated coconut. A partial equilibrium model was specified for the coconut market, estimated using a seemingly unrelated regression method and simulated for changes in export prices of desiccated coconut. Monthly data for the period 1990-2009 gathered from published sources were used for the analysis. The findings revealed that the import tariffs are endogenously determined and export price of desiccated coconut has a statistically significant negative effect on the tariff level. The cross price demand elasticity of coconut oil with respect to palm oil price is positive and statistically significant indicating a strong link between the two markets.Tropical Agricultural Research Vol. 25 (4): 476 – 486 (2014)

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8cb4eb497ce9c4c88900a87e8afb80bTest
https://tar.sljol.info/articles/8066Test