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Analysis of Flue-cured Tobacco Supply Elasticity in Zimbabwe 1980-2010: An Error Correction Model Approach


  • 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 elasticity of flue cured tobacco between 1980 and 2010. The Augmented Dickey –Fuller unit root test is performed to test the variables for stationarity. The data generating processes show these data series to be non-stationary and therefore OLS estimations would be biased. The data series are differenced and the Engel-Granger procedure is performed to test for cointegration. The Error Correction Model approach is used to estimate flue cured tobacco supply. Flue cured tobacco supply is found to be price inelastic in the short –run.

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  • Pfumayaramba, Tichaona, 2011. "Analysis of Flue-cured Tobacco Supply Elasticity in Zimbabwe 1980-2010: An Error Correction Model Approach," 2011 Conference (55th), February 8-11, 2011, Melbourne, Australia 100696, Australian Agricultural and Resource Economics Society.
  • Handle: RePEc:ags:aare11:100696

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    References listed on IDEAS

    1. Christopher J. O'Donnell, 2010. "Measuring and decomposing agricultural productivity and profitability change ," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 54(4), pages 527-560, October.
    2. C.J. O'Donnell, 2008. "An aggregate quantity-price framework for measuring and Decomposing productivity and profitability change," CEPA Working Papers Series WP072008, School of Economics, University of Queensland, Australia.
    3. Sheng, Yu & Gray, Emily M. & Mullen, John D., 2011. "Public investment in R&D and extension and productivity in Australian broadacre agriculture," 2011 Conference (55th), February 8-11, 2011, Melbourne, Australia 100712, Australian Agricultural and Resource Economics Society.
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    Supply elasticity; stationary data; cointegration; error correction model.; Research Methods/ Statistical Methods;

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