TOA-MD5.0: A Novel Approach to Multi-Dimensional Impact Assessment


title page of TOA-MD 5.0  

TOA-MD worldwide

Click on the map to view where the TOA Model is in use globally


  • The TOA Project develops modeling tools that can be used by research teams to improve the understanding of agricultural system sustainability and inform policy decisions. 
  • The TOA Project also provides training to empower researchers and institutions to use these modeling tools.
  • For more information on the Tradeoffs approach, check out these key publications and the TOA project history.
  • Click on the TOA-MD image at right for an introduction to what TOA-MD5.0 can do!

What's New...

  • The 3rd Annual Global TOA-MD Workshop held June 9-13 2014 at the ILRI Campus in Addis Ababa was a great success! The course, focusing on Crop-Livestock Modeling, was attended by 20 CGIAR Scientists. This course was organized in collaboration with Mario Herrero (CSIRO) to utilize the livestock model Ruminant with TOA-MD.
  • The 2nd Annual Global TOA-MD Workshop was held June 17-21 2013 at OSU in Corvallis.
  • John Antle and Roberto Valdivia led and organized the AgMIP TOA-MD Economic Modeling Workshop in Dubai, UAE, April 29 -May 3, 2013. See more information at
  • Download the poster: TOA-MD: An Novel Simulation Approach to Multi-Dimensional Impact Assessment
  • Download the poster: TOA-MD: A New Approach to Assess Climate Change Impacts
  • John Antle and Roberto Valdivia attended the AgMIP Sub-Saharan Africa Regional Workshop in Accra, Ghana, September 10-14, 2012, and the AgMIP South Asia Regional Workshop in Colombo, Sri Lanka, November 12-16, 2012. See information about these workshops at
  • John Antle, Roberto Valdivia and Jianhong Mu attended the first AgMIP North America meeting in Ames, IA, September 5-7, 2012. A group of economists met at this meeting to discuss possible model inter-comparison and impact assessment activities for the North American region. A summary of the Economics Breakout Sessions is available. Economists from the region are invited to express interest in participation in AgMIP North America. 
  • The 1st Annual Global TOA-MD Workshop was held June 19-23 at OSU in Corvallis.
  • John Antle received the Agricultural & Applied Economics Association’s prestigious Quality of Research Discovery Award for the paper “Parsimonious Multi-Dimensional Impact Assessment” published in the 2011 AJAE. The award was presented to John at the AAEA Awards & Fellows Recognition Ceremony at the 2012 AAEA Annual Meeting to be held in Seattle from August 12–14, 2012.
  • Moving Along the Impact Pathway: The Case of IAA in Bangladesh by John Antle & Roberto Valdivia Oregon State University and Charles Crissman & Khondker Murshed-e-Jahan WorldFish Center. Presented at Assessing the impacts of international agricultural research on poverty and under-nutrition: A mid-term workshop for studies commissioned by the CGIAR Standing Panel on Impact Assessment (2011 – 2013),London International Development Centre, May 8-9 2012.