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Analysis of Flue-cured Tobacco Supply Elasticity in Zimbabwe 1980-2010: An Error Correction Model Approach AgEcon
Pfumayaramba, Tichaona.
Flue cured tobacco has been an important crop for the Zimbabwean economy historically in terms of foreign currency earnings and employment creation. Between 1980 and 2000, there is a general increase in tobacco output, followed by a sharp decline from 2001 up to 2008 and then output starts to increase again. Flue cured tobacco output as measured by the quantity that is delivered to the auction floors is used to estimate supply elasticity. The objective is to determine if flue-cured tobacco supply is price elastic and whether price incentives alone will boost supply in the short -run. Time series data on flue cured tobacco output, prices, production costs, prices of major competing crops, the exchange rates and inflation are analysed to model the price...
Tipo: Conference Paper or Presentation Palavras-chave: Supply elasticity; Stationary data; Cointegration; Error correction model.; Research Methods/ Statistical Methods.
Ano: 2011 URL: http://purl.umn.edu/100696
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Assessing Model Assumptions in Trade Liberalization Modeling: An Application to SWOPSIM AgEcon
Herlihy, Michael; Haley, Stephen L.; Johnston, Brian G..
This report reviews research on the effectiveness of acreage reduction programs and describes the methodology developed for the Static World Policy Simulation (SWOPSIM) modeling framework to capture the effect of removing these programs. It also analyzes the results of several sensitivity tests of a SWOPSIM model used by the Economic Research Service to study the effects of agricultural trade liberalization. Assumptions concerning how U.S. acreage reduction programs are modeled significantly influence predictions as to how trade liberalization affects commodity prices, production, and trade. However, these assumptions do not significantly influence predictions of how trade liberalization affects producer welfare. In terms of trade liberalization analysis,...
Tipo: Working or Discussion Paper Palavras-chave: Acreage reduction programs; Slippage; Deficiency payments; Economic model; Trade liberalization; Supply elasticity; SWOPSIK; International Relations/Trade.
Ano: 1992 URL: http://purl.umn.edu/51134
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Panel Data Estimation Methods on Supply and Demand Elasticities: The Case of Cotton in Greece AgEcon
Kotakou, Christina A..
This article examines the effects of the application of panel data estimation methods on a system of equations with unbalanced panel data. We apply pooled, random-effects, and fixed-effects estimation in three data sets: small, medium, and large farms to examine the relationship between farm size and the elasticity of cotton supply with respect to cotton price. Our results indicate that the adoption of various estimation methods entails different estimated parameters both in terms of their absolute value and in terms of their statistical significance. Additionally, the elasticity of cotton supply with respect to price varies according to farm size.
Tipo: Journal Article Palavras-chave: Farm size; Panel data; Supply elasticity; Systems of equations; Demand and Price Analysis; C33; D21; Q18.
Ano: 2011 URL: http://purl.umn.edu/100637
Registros recuperados: 3
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