This study examines the effects of regulatory framework and legal system on the private action towards environmental quality among food processing firms in Sri Lanka. An Environment Regulation Responsiveness Index, reflecting compliance to solid waste management practices, was used as the measure of firms perception on environment regulation. The results highlight that compliance by the majority of firms was relatively low, especially among the small scale firms, suggesting that the decision maker on environment quality did not consider government regulation as an impotant factor to act on the environment. This calls for a critical revision and adjustments to the policy on environmental quality management both at the national and provincial level in order to promote voluntary action by firms.
{"title":"Foreign Aid, Aid Effectiveness and the New Aid Paradigm: A Review","authors":"H. Gunatilake, R. Fabella, A. Lagman-Martin","doi":"10.4038/SJAE.V12I0.4596","DOIUrl":"https://doi.org/10.4038/SJAE.V12I0.4596","url":null,"abstract":"This study examines the effects of regulatory framework and legal system on the private action towards environmental quality among food processing firms in Sri Lanka. An Environment Regulation Responsiveness Index, reflecting compliance to solid waste management practices, was used as the measure of firms perception on environment regulation. The results highlight that compliance by the majority of firms was relatively low, especially among the small scale firms, suggesting that the decision maker on environment quality did not consider government regulation as an impotant factor to act on the environment. This calls for a critical revision and adjustments to the policy on environmental quality management both at the national and provincial level in order to promote voluntary action by firms.","PeriodicalId":318491,"journal":{"name":"Sri Lankan Journal of Agricultural Economics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115838666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study aimed to investigate the responsiveness of household demand in Western Province for rice (samba), dhal, bread, chicken, coconut, milk powder and sugar. The research finds demand for these foods with the changes in price and expenditure using the linear approximation of the strict Almost Ideal Demand System (LA/AIDS) estimated using the Seemingly Unrelated Regression Procedure (SURE). The data used were from the household income and expenditure survey, 2006/07. All food items were found to be price inelastic while they had a positive expenditure elasticity which is less than unity except bread. Simulations show that the calorie availability of the household declines with most of the food products and in the light of expected food price increases in the world; this will have a marked impact on food security and nutrition security of households in the Western Province. Sri Lankan Journal of Agricultural Economics Vol.(12-13)No. 1 (2010-2011) pp. 15-26
本研究旨在调查西部省份家庭对大米(桑巴)、达哈尔、面包、鸡肉、椰子、奶粉和糖需求的响应性。研究发现，这些食品的需求随着价格和支出的变化而变化，使用严格的几乎理想需求系统(LA/AIDS)的线性近似，使用看似无关回归程序(SURE)估计。数据来自2006/07年度住户收入及开支统计调查。除面包外，所有食品均具有正的消费弹性，且均小于1。模拟表明，考虑到世界上预期的食品价格上涨，家庭的卡路里可用性随着大多数食品而下降;这将对西部省家庭的粮食安全和营养安全产生显著影响。斯里兰卡农业经济杂志第12-13卷第1期。1 (2010-2011) pp. 15-26
{"title":"Food Demand Elasticities, Price Changes and Calorie Availability of Households in the Western Province of Sri Lanka","authors":"S. Nirmali, J. Edirisinghe","doi":"10.4038/SJAE.V12I0.4594","DOIUrl":"https://doi.org/10.4038/SJAE.V12I0.4594","url":null,"abstract":"This study aimed to investigate the responsiveness of household demand in Western Province for rice (samba), dhal, bread, chicken, coconut, milk powder and sugar. The research finds demand for these foods with the changes in price and expenditure using the linear approximation of the strict Almost Ideal Demand System (LA/AIDS) estimated using the Seemingly Unrelated Regression Procedure (SURE). The data used were from the household income and expenditure survey, 2006/07. All food items were found to be price inelastic while they had a positive expenditure elasticity which is less than unity except bread. Simulations show that the calorie availability of the household declines with most of the food products and in the light of expected food price increases in the world; this will have a marked impact on food security and nutrition security of households in the Western Province. Sri Lankan Journal of Agricultural Economics Vol.(12-13)No. 1 (2010-2011) pp. 15-26","PeriodicalId":318491,"journal":{"name":"Sri Lankan Journal of Agricultural Economics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123772790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
West Virginia reports the highest obesity level in the United States. Every 3 in 10 adults are obese, and the prevalence of obesity is nearly 8% higher than the national level. Obesity is linked with several diseases such as heart disease, diabetes II, hypertension, cancer, arthritis, asthma, and some psychological disorders. The reported economic burden associated with obesity is considerably high. This research study attempts to examine the use of exercise and cutting down of calorie intakes in controlling obesity in West Virginia using the 2009 Behavioral Risk Factor Surveillance System data. Three logit models were estimated. Furthermore, results indicate that obese adults are less likely to engage in exercises to lose weight compared to non-obese adults. Among obese individuals only 15% cut down calorie intakes to lose weight where as the respective proportion from the entire population is 31%. Low income levels, and presence of diseases such as diabetes, hypertension, arthritis, and asthma, have positive effects on obesity in West Virginia. Obesity can significantly be alleviated through physical activities in West Virginia.
{"title":"An Empirical Analysis of Adult Obesity in West Virginia","authors":"J. Herath, T. Gebremedhin","doi":"10.4038/SJAE.V12I0.4593","DOIUrl":"https://doi.org/10.4038/SJAE.V12I0.4593","url":null,"abstract":"West Virginia reports the highest obesity level in the United States. Every 3 in 10 adults are obese, and the prevalence of obesity is nearly 8% higher than the national level. Obesity is linked with several diseases such as heart disease, diabetes II, hypertension, cancer, arthritis, asthma, and some psychological disorders. The reported economic burden associated with obesity is considerably high. This research study attempts to examine the use of exercise and cutting down of calorie intakes in controlling obesity in West Virginia using the 2009 Behavioral Risk Factor Surveillance System data. Three logit models were estimated. Furthermore, results indicate that obese adults are less likely to engage in exercises to lose weight compared to non-obese adults. Among obese individuals only 15% cut down calorie intakes to lose weight where as the respective proportion from the entire population is 31%. Low income levels, and presence of diseases such as diabetes, hypertension, arthritis, and asthma, have positive effects on obesity in West Virginia. Obesity can significantly be alleviated through physical activities in West Virginia.","PeriodicalId":318491,"journal":{"name":"Sri Lankan Journal of Agricultural Economics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125527871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
No abstract available Sri Lankan Journal of Agricultural Economics Vol.(12-13)No. 1 (2010-2011) pp. 99-102
《斯里兰卡农业经济杂志》第12-13卷第1期。1 (2010-2011) pp. 99-102
{"title":"Peasant Revolts in Dutch and British Periods - Kumari Jayawardena, PERPETUAL FERMENT Popular Revolts in Sri Lanka in the 18th and 19th Centuries. Social Scientists’ Association, Colombo 2010. Price Rs. 850","authors":"N. Sanderatne","doi":"10.4038/SJAE.V12I0.4598","DOIUrl":"https://doi.org/10.4038/SJAE.V12I0.4598","url":null,"abstract":"No abstract available Sri Lankan Journal of Agricultural Economics Vol.(12-13)No. 1 (2010-2011) pp. 99-102","PeriodicalId":318491,"journal":{"name":"Sri Lankan Journal of Agricultural Economics","volume":"2208 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127470408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Gunatilake, W. Wickramasinghe, P. Abeygunawardena
This paper investigates the impact of individual rate of time preference (IRTP) on forest resources harvesting from the Sinharaja forest in Sri Lanka. The impact of IRTP on the harvest rate of forest resources was tested using a simultaneous equation model. Analyses show that low income results in a higher IRTP, indicating that poverty is an important determinant of the IRTP. Further, the results show that individuals with a higher rate of time preference harvest more forest resources. Overall, the results suggest that long-term strategies for management of nature reserves would require poverty alleviation in the peripheral communities, among other measures. Sri Lankan Journal of Agricultural Economics Vol.10/11 (2008/2009) 31-60 DOI: http://dx.doi.org/10.4038/sjae.v10i0.4590
{"title":"Time Preference and Natural Resource Use by Local Communities: The Case of Sinharaja Forest in Sri Lanka","authors":"H. Gunatilake, W. Wickramasinghe, P. Abeygunawardena","doi":"10.4038/SJAE.V10I0.4590","DOIUrl":"https://doi.org/10.4038/SJAE.V10I0.4590","url":null,"abstract":"This paper investigates the impact of individual rate of time preference (IRTP) on forest resources harvesting from the Sinharaja forest in Sri Lanka. The impact of IRTP on the harvest rate of forest resources was tested using a simultaneous equation model. Analyses show that low income results in a higher IRTP, indicating that poverty is an important determinant of the IRTP. Further, the results show that individuals with a higher rate of time preference harvest more forest resources. Overall, the results suggest that long-term strategies for management of nature reserves would require poverty alleviation in the peripheral communities, among other measures. Sri Lankan Journal of Agricultural Economics Vol.10/11 (2008/2009) 31-60 DOI: http://dx.doi.org/10.4038/sjae.v10i0.4590","PeriodicalId":318491,"journal":{"name":"Sri Lankan Journal of Agricultural Economics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130753537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Since the days of Marshall (1890), sharecropping has been the subject of academic discourse concerned with static efficiency and its impact on agricultural innovations and productive efficiency. Whilst exploring the theoretical and empirical debates on sharecropping efficiency, this paper makes a renewed attempt to examine the productivity differences under alternative modes of cultivation. Based on a primary survey of 203 households encompassing 303 agricultural holdings in rural West Bengal, this paper also attempts to identify factors which are responsible for productivity differences under alternative tenurial contracts. The empirical evidence and subsequent statistical analysis confirms the equal efficiency hypothesis of Cheung (1969) and asserts that variation in productive efficiency among tenurial contracts is due to the variation in input used in agriculture where the access to credit is observed to play a significant role in input utilization and in achieving productive efficiency in agriculture. Sri Lankan Journal of Agricultural Economics Vol.10/11 (2008/2009) 1-17 DOI: http://dx.doi.org/ 10.4038/sjae.v10i0.4588
{"title":"Productivity Differences under Alternative Tenurial Contracts in Agriculture and Access to Credit: Evidence from Rural West Bengal, India","authors":"A. Laha, P. K. Kuri","doi":"10.4038/SJAE.V10I0.4588","DOIUrl":"https://doi.org/10.4038/SJAE.V10I0.4588","url":null,"abstract":"Since the days of Marshall (1890), sharecropping has been the subject of academic discourse concerned with static efficiency and its impact on agricultural innovations and productive efficiency. Whilst exploring the theoretical and empirical debates on sharecropping efficiency, this paper makes a renewed attempt to examine the productivity differences under alternative modes of cultivation. Based on a primary survey of 203 households encompassing 303 agricultural holdings in rural West Bengal, this paper also attempts to identify factors which are responsible for productivity differences under alternative tenurial contracts. The empirical evidence and subsequent statistical analysis confirms the equal efficiency hypothesis of Cheung (1969) and asserts that variation in productive efficiency among tenurial contracts is due to the variation in input used in agriculture where the access to credit is observed to play a significant role in input utilization and in achieving productive efficiency in agriculture. Sri Lankan Journal of Agricultural Economics Vol.10/11 (2008/2009) 1-17 DOI: http://dx.doi.org/ 10.4038/sjae.v10i0.4588","PeriodicalId":318491,"journal":{"name":"Sri Lankan Journal of Agricultural Economics","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126548302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The recent phenomenal crisis in the financial sector and the surge in food prices have resurrected the debate on the role of government, in economic management and in particular in securing national food security. This paper briefly reviews the theoretical literature in favor of government intervention in the market to secure food security. It is argued that food security needs to be considered as a public good, hence justifying government intervention in supplying it. Sustaining the potential to domestically produce safe minimum amounts of a staple food should be considered as a national strategic objective to achieve food security. Wheat is a staple food in Oman and it has been a major crop in the farming systems of Oman. Wheat cultivation under present circumstances of crop prices, yield, agricultural technology and resource availability in Oman’s commercial farming is not viable, without government support. With the use of a linear programming model that simulates the farming systems; in a major agricultural region in Oman (Batinah region) the production subsidy that is required as an incentive to promote the cultivation of wheat is estimated. The wheat yield in Oman is considered as 3 Tons/Ha and world price of wheat is around 100 OR/Ton. Wheat cultivation under commercial farming would be viable if a subsidy of at least 414 OR/Ha (138 OR/Ton) is provided. This subsidy can be instrumented as an input subsidy and/or price supports as Saudi Arabia had done (190 OR/Ton of wheat). If the wheat yield could be increased through technological and managerial means to global potential yield of 5 Tons/Ha then the price support needs to be at least 83 OR/Ton of wheat. The extent of its achievement in terms of extent of land cultivated and total domestic production of wheat, need to be considered in relation to the trade-off of fiscal cost and political choice of the degree of food security deemed as necessary to achieve. Sri Lankan Journal of Agricultural Economics Vol.10/11 (2008/2009) 61-74 DOI: http://dx.doi.org/10.4038/sjae.v10i0.4591
{"title":"Food Security as a Public Good: Oman’s Prospects","authors":"H. Kotagama, H. Boughanmi, S. Zekri, S. Prathapar","doi":"10.4038/SJAE.V10I0.4591","DOIUrl":"https://doi.org/10.4038/SJAE.V10I0.4591","url":null,"abstract":"The recent phenomenal crisis in the financial sector and the surge in food prices have resurrected the debate on the role of government, in economic management and in particular in securing national food security. This paper briefly reviews the theoretical literature in favor of government intervention in the market to secure food security. It is argued that food security needs to be considered as a public good, hence justifying government intervention in supplying it. Sustaining the potential to domestically produce safe minimum amounts of a staple food should be considered as a national strategic objective to achieve food security. Wheat is a staple food in Oman and it has been a major crop in the farming systems of Oman. Wheat cultivation under present circumstances of crop prices, yield, agricultural technology and resource availability in Oman’s commercial farming is not viable, without government support. With the use of a linear programming model that simulates the farming systems; in a major agricultural region in Oman (Batinah region) the production subsidy that is required as an incentive to promote the cultivation of wheat is estimated. The wheat yield in Oman is considered as 3 Tons/Ha and world price of wheat is around 100 OR/Ton. Wheat cultivation under commercial farming would be viable if a subsidy of at least 414 OR/Ha (138 OR/Ton) is provided. This subsidy can be instrumented as an input subsidy and/or price supports as Saudi Arabia had done (190 OR/Ton of wheat). If the wheat yield could be increased through technological and managerial means to global potential yield of 5 Tons/Ha then the price support needs to be at least 83 OR/Ton of wheat. The extent of its achievement in terms of extent of land cultivated and total domestic production of wheat, need to be considered in relation to the trade-off of fiscal cost and political choice of the degree of food security deemed as necessary to achieve. Sri Lankan Journal of Agricultural Economics Vol.10/11 (2008/2009) 61-74 DOI: http://dx.doi.org/10.4038/sjae.v10i0.4591","PeriodicalId":318491,"journal":{"name":"Sri Lankan Journal of Agricultural Economics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128422719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rice production in Sri Lanka has already achieved the self sufficiency status with an average per capita annual consumption of 110 kg. The production will be further enhanced with input supports, land expansion and technological breakthroughs. At the same time, the changes occurred in the Sri Lankan society such as increase in per capita income and urbanization have modified the consumer preferences. In this context, consumer preferences for different quality attributes of rice were assessed based on conjoint methodology. The appropriate attributes and levels were identified from a focus group discussion and subsequently a conjoint questionnaire was administered using a sample of 185 consumers under a fractional factorial design. ANOVA and part worth utility models were estimated. The relative importance of attributes was calculated using part-worths. ANOVA results indicate that of the four attributes, type, color and purity were significant, but price was not significant. Part worth estimates revealed that the purity is the most important attribute when selecting a type of rice. Sri Lankan Journal of Agricultural Economics Vol.10/11 (2008/2009) 19-30 DOI: http://dx.doi.org/10.4038/sjae.v10i0.4589
{"title":"Consumer Preferences for Quality Attributes of Rice: A Conjoint Analysis","authors":"B. R. Walisinghe, L. Gunaratne","doi":"10.4038/SJAE.V10I0.4589","DOIUrl":"https://doi.org/10.4038/SJAE.V10I0.4589","url":null,"abstract":"Rice production in Sri Lanka has already achieved the self sufficiency status with an average per capita annual consumption of 110 kg. The production will be further enhanced with input supports, land expansion and technological breakthroughs. At the same time, the changes occurred in the Sri Lankan society such as increase in per capita income and urbanization have modified the consumer preferences. In this context, consumer preferences for different quality attributes of rice were assessed based on conjoint methodology. The appropriate attributes and levels were identified from a focus group discussion and subsequently a conjoint questionnaire was administered using a sample of 185 consumers under a fractional factorial design. ANOVA and part worth utility models were estimated. The relative importance of attributes was calculated using part-worths. ANOVA results indicate that of the four attributes, type, color and purity were significant, but price was not significant. Part worth estimates revealed that the purity is the most important attribute when selecting a type of rice. Sri Lankan Journal of Agricultural Economics Vol.10/11 (2008/2009) 19-30 DOI: http://dx.doi.org/10.4038/sjae.v10i0.4589","PeriodicalId":318491,"journal":{"name":"Sri Lankan Journal of Agricultural Economics","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127180499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Productivity differences between tenant and owner operated farms have often been investigated using traditional methods. All these studies compute the partial productivity differences between the two farm ownership types. This paper takes the analysis one step further by examining the differences in efficiency among these two farm types. A stochastic frontier production function analysis reveals significant differences between the two farms with respect to input usage, productivity and technical efficiency. Factors causing the differences are identified and policy implications drawn. DOI: http://dx.doi.org/10.4038/sjae.v4i0.3482 SJAE 2002; 4(1): 19-37
{"title":"Implication of Tenancy Status on Productivity and Efficiency: Evidence from Fiji","authors":"Mahendra Reddy","doi":"10.4038/SJAE.V4I0.3482","DOIUrl":"https://doi.org/10.4038/SJAE.V4I0.3482","url":null,"abstract":"Productivity differences between tenant and owner operated farms have often been investigated using traditional methods. All these studies compute the partial productivity differences between the two farm ownership types. This paper takes the analysis one step further by examining the differences in efficiency among these two farm types. A stochastic frontier production function analysis reveals significant differences between the two farms with respect to input usage, productivity and technical efficiency. Factors causing the differences are identified and policy implications drawn. DOI: http://dx.doi.org/10.4038/sjae.v4i0.3482 SJAE 2002; 4(1): 19-37","PeriodicalId":318491,"journal":{"name":"Sri Lankan Journal of Agricultural Economics","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129151599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
It is generally believed that the food processing sector can exercise market power on raw material producers and final consumers. The objective of this study was to assess the degree of oligopoly and oligopsony power of the tea-processing sector. A partial equilibrium model was developed for the world market for tea, treating India, Kenya and Sri Lanka as raw tea producers and Canada, United Kingdom and the United States of America as tea consumers. An imperfectly competitive tea-processing sector was incorporated in the model allowing conjectural variation elasticity to represent the degree of market power. The model was econometrically estimated using the two-stage least square estimation procedure. Results of the econometric estimation show that all the market power estimates are statistically significant. The conjectural elasticity values in the input market are 0.0516, 0.0015 and 0.1657 for India, Kenya and Sri Lanka respectively. The conjectural variation elasticity in the output market is 0.1273. The elasticity of supply with respect to own prices are 0.0791, 0.2268 and 0.2060 for India, Kenya and Sri Lanka respectively. The elasticity of demand with respect to own prices are –0.4720, –0.1556 and –0.1237 for Canada, United Kingdom and the United States respectively. The resulting Learner Index for Sri Lanka is very small indicating that Sri Lankan tea producers are not significantly exploited by tea processors.
{"title":"Estimating Market Power of Tea Processing Sector","authors":"J. Weerahewa","doi":"10.4038/SJAE.V5I0.3477","DOIUrl":"https://doi.org/10.4038/SJAE.V5I0.3477","url":null,"abstract":"It is generally believed that the food processing sector can exercise market power on raw material producers and final consumers. The objective of this study was to assess the degree of oligopoly and oligopsony power of the tea-processing sector. A partial equilibrium model was developed for the world market for tea, treating India, Kenya and Sri Lanka as raw tea producers and Canada, United Kingdom and the United States of America as tea consumers. An imperfectly competitive tea-processing sector was incorporated in the model allowing conjectural variation elasticity to represent the degree of market power. The model was econometrically estimated using the two-stage least square estimation procedure. Results of the econometric estimation show that all the market power estimates are statistically significant. The conjectural elasticity values in the input market are 0.0516, 0.0015 and 0.1657 for India, Kenya and Sri Lanka respectively. The conjectural variation elasticity in the output market is 0.1273. The elasticity of supply with respect to own prices are 0.0791, 0.2268 and 0.2060 for India, Kenya and Sri Lanka respectively. The elasticity of demand with respect to own prices are –0.4720, –0.1556 and –0.1237 for Canada, United Kingdom and the United States respectively. The resulting Learner Index for Sri Lanka is very small indicating that Sri Lankan tea producers are not significantly exploited by tea processors.","PeriodicalId":318491,"journal":{"name":"Sri Lankan Journal of Agricultural Economics","volume":"66 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120877352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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