Abstract

http://ssrn.com/abstract=1650476
 
 

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Crop Production and Road Connectivity in Sub-Saharan Africa: A Spatial Analysis


Paul Dorosh


A member of the CGIAR Consortium - International Food Policy Research Institute (IFPRI)

Hyoung Gun Wang


World Bank

Liang You


affiliation not provided to SSRN

Emily Schmidt


affiliation not provided to SSRN

July 1, 2010

World Bank Policy Research Working Paper No. 5385

Abstract:     
This study examines the relationship between transport infrastructure and agriculture in Sub-Saharan Africa using new data obtained from geographic information systems (GIS). First, the authors analyze the impact of road connectivity on crop production and choice of technology. Second, they explore the impact of investments that reduce road travel times. Finally, they show how this type of analysis can be used to compare cost-benefit ratios for alternative road investments in terms of agricultural output per dollar invested. The authors find that agricultural production is highly correlated with proximity (as measured by travel time) to urban markets. Likewise, adoption of high-productive/high-input technology is negatively correlated with travel time to urban centers. There is therefore substantial scope for increasing agricultural production in Sub-Saharan Africa, particularly in more remote areas. Total crop production relative to potential production is 45 percent for areas within four hours’ travel time from a city of 100,000 people. In contrast, it is just 5 percent for areas more than eight hours away. Low population densities and long travel times to urban centers sharply constrain production. Reducing transport costs and travel times to these areas would expand the feasible market size for these regions. Compared to West Africa, East Africa has lower population density, smaller local markets, lower road connectivity, and lower average crop production per unit area. Unlike in East Africa, reducing travel time does not significantly increase the adoption of high-input/high-yield technology in West Africa. This may be because West Africa already has a relatively well-connected road network.

Number of Pages in PDF File: 46

Keywords: Transport Economics Policy & Planning, Crops & Crop Management Systems, Climate Change and Agriculture, Regional Economic Development, Economic Theory & Research

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Date posted: August 2, 2010  

Suggested Citation

Dorosh, Paul and Wang, Hyoung Gun and You, Liang and Schmidt, Emily, Crop Production and Road Connectivity in Sub-Saharan Africa: A Spatial Analysis (July 1, 2010). World Bank Policy Research Working Paper Series, Vol. , pp. -, 2010. Available at SSRN: http://ssrn.com/abstract=1650476

Contact Information

Paul Dorosh (Contact Author)
A member of the CGIAR Consortium - International Food Policy Research Institute (IFPRI) ( email )
2033 K Street, NW
Washington, DC 20006
United States

Hyoung Gun Wang
World Bank ( email )
1818 H Street, NW
Washington, DC 20433
United States
Liang You
affiliation not provided to SSRN
No Address Available
Emily Schmidt
affiliation not provided to SSRN
No Address Available
Feedback to SSRN


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