International Crops Research Institute for the Semi-Arid Tropics
Abstract
Alfisols are the third most important soil order in the world, covering 13.1% of the world area.
In the semi-arid tropics, Alfisols cover a much larger area of potentially arable and grazable
lands than Vertisols, which have until now received far more attention from ICRISAT
researchers. About 62% of the world’s Alfisols are located in West Africa and Indi