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Empirical effects of short-term export bans: The case of African maize

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  • Porteous, Obie

Abstract

Temporary export restrictions have been widely used in recent years in an attempt to stabilize domestic prices of staple grains. I use monthly, market-level price data to investigate the empirical effects of 13 short-term export bans on maize implemented by 5 countries in East and Southern Africa. I find no statistically significant effect of export bans on the price gaps between pairs of affected cross-border markets. My results for price gaps match those from a model simulation in which export bans are not implemented. However, prices and price volatility in the implementing country are significantly higher during export ban periods in the data than in the model simulation with no bans. Export bans in the region are imperfectly enforced, divert trade into the informal sector, and appear to destabilize domestic markets rather than stabilizing them.

Suggested Citation

  • Porteous, Obie, 2017. "Empirical effects of short-term export bans: The case of African maize," Food Policy, Elsevier, vol. 71(C), pages 17-26.
  • Handle: RePEc:eee:jfpoli:v:71:y:2017:i:c:p:17-26
    DOI: 10.1016/j.foodpol.2017.07.003
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    Cited by:

    1. Kornher, Lukas & Kalkuhl, Matthias, 2015. "Cost and benefits from regional cooperation on grain reserves: The case of ECOWAS," 2015 Conference, August 9-14, 2015, Milan, Italy 211824, International Association of Agricultural Economists.
    2. Guillaume Pierre & Jonathan Kaminski, 2019. "Cross country maize market linkages in Africa: integration and price transmission across local and global markets," Agricultural Economics, International Association of Agricultural Economists, vol. 50(1), pages 79-90, January.
    3. Diao, Xinshen & Kennedy, Adam & Mabiso, Athur & Pradesha, Angga, 2013. "Economywide impact of maize export bans on agricultural growth and household welfare in Tanzania: A Dynamic Computable General Equilibrium Model Analysis:," IFPRI discussion papers 1287, International Food Policy Research Institute (IFPRI).
    4. repec:zbw:iamodp:235157 is not listed on IDEAS
    5. Dick Durevall & Roy Weide, 2017. "Importing High Food Prices by Exporting: Rice Prices in Lao PDR," Journal of Agricultural Economics, Wiley Blackwell, vol. 68(1), pages 164-181, February.
    6. Matthias Kalkuhl & Lukas Kornher & Matthias Kalkuhl & Irfan Mujahid, 2015. "Food price volatility in developing countries – the role of trade and storage," EcoMod2015 8415, EcoMod.
    7. Aragie, Emerta & Pauw, Karl & Pernechele, Valentina, 2018. "Achieving food security and industrial development in Malawi: Are export restrictions the solution?," World Development, Elsevier, vol. 108(C), pages 1-15.
    8. Davids, T. & Meyer, F. & Westhoff, P., 2018. "Quantifying the regional impact of export controls in Southern African maize markets," 2018 Conference, July 28-August 2, 2018, Vancouver, British Columbia 277353, International Association of Agricultural Economists.
    9. Jolejole-Foreman, Maria Christina & Mallory, Mindy L. & Baylis, Katherine R., 2013. "Impact of Wheat and Rice Export Ban on Indian Market Integration," 2013 Annual Meeting, August 4-6, 2013, Washington, D.C. 150595, Agricultural and Applied Economics Association.
    10. Jinggang Guo & Craig M.T. Johnston, 2020. "Do Protectionist Trade Policies Integrate Domestic Markets? Evidence from the Canada-U.S. Softwood Lumber Dispute," Staff Working Papers 20-10, Bank of Canada.
    11. Rajabu Joseph Kangile & Charles Peter Mgeni & Zena Theopist Mpenda & Stefan Sieber, 2020. "The Determinants of Farmers’ Choice of Markets for Staple Food Commodities in Dodoma and Morogoro, Tanzania," Agriculture, MDPI, Open Access Journal, vol. 10(5), pages 1-12, April.
    12. Christophe Gouel, 2014. "Food Price Volatility and Domestic Stabilization Policies in Developing Countries," NBER Chapters, in: The Economics of Food Price Volatility, pages 261-306, National Bureau of Economic Research, Inc.
    13. Götz, Linde & Djuric, Ivan & Nivievskyi, Oleg, 2016. "Regional wheat price effects of extreme weather events and wheat export controls in Russia and Ukraine
      [Regionale Weizenpreiseffekte von Wetterextremen und Weizenexportkontrollen in Russland und de
      ," IAMO Discussion Papers 154, Leibniz Institute of Agricultural Development in Transition Economies (IAMO).
    14. Makombe, Wilfred & Kropp, Jaclyn D., 2016. "The Effects Of Tanzanian Maize Export Bans On Producers’ Welfare And Food Security," 2016 Annual Meeting, July 31-August 2, Boston, Massachusetts 235499, Agricultural and Applied Economics Association.
    15. Wenting Wang & Longbao Wei, 2019. "Impacts of Agricultural Price Support Policies on Price Variability and Welfare: Evidence from China's Soybean Market," Center for Agricultural and Rural Development (CARD) Publications 19-wp592, Center for Agricultural and Rural Development (CARD) at Iowa State University.
    16. Matthias Kalkuhl & Mekbib Haile & Lukas Kornher & Marta Kozicka, 2015. "Cost-benefit framework for policy action to navigate food price spikes. FOODSECURE Working Paper No 33," FOODSECURE Working papers 33, LEI Wageningen UR.
    17. Linde Götz & Ivan Djuric & Oleg Nivievskyi, 2016. "Regional Price Effects of Extreme Weather Events and Wheat Export Controls in Russia and Ukraine," Journal of Agricultural Economics, Wiley Blackwell, vol. 67(3), pages 741-763, September.
    18. Davids, Tracy & Schroeder, Kateryna G. & Meyer, Ferdinand & Chisanga, Brian, 2015. "Regional Price Transmission in Southern African Maize Markets," 2015: Trade and Societal Well-Being, December 13-15, 2015, Clearwater Beach, Florida 229602, International Agricultural Trade Research Consortium.
    19. Jade Siu, 2020. "Formalising informal cross-border trade: Evidence from One-Stop-Border-Posts in Uganda," Discussion Papers 20-08, Department of Economics, University of Birmingham.

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