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World Food Model-WFM (FAO) (until 1995)

The WFM was developed and is maintained by FAO, Rome. Both Dr. Klaus Frohberg, a former staff member of the Department, and Dr. Wolfgang Britz have supported the FAO in the development and application of the WFM.


  • Recursive dynamic non-spatial world trade model
  • Some 150 national models and 13 products
  • Heuristic parameters, e.g. elasticities
  • Developed and applied by FAO, Rome, for medium-term projection and simulations
  • Uses software tools developed by the Department for Economics, Agricultural Policy, and Agricultural Information Systems, University of Bonn



The WFM System is a non-spatial, recursive-dynamic, synthetic, multi-regional, multi-product partial-equilibrium world trade model for basic food products. It provides a framework to forecast supply, demand and net trade for approximately 150 countries. The main features of the systems are the following:

  • Close co-operation with the country and product experts in FAO in order to ensure plausible base lines
  • Self-written, simple solution algorithm
  • Covers tariffs, export quotas and PSE/CSE's as policy instruments


  • FROHBERG, H. & W. BRITZ: The World Food Model and an Assessment of the impact of the GATT agreement on Agriculture, Research report: 1994, Bonn

WFM at FAO (direct link):

Commodity and Trade Division ESC at FAO

Last updated: Thursday, January 05, 2017