In the late 1990s, a global initiative on the impact assessment of crop varietal change estimated that modern varieties (MVs) accounted for about 22% of the growing area of primary food crops across Sub-Saharan Africa (SSA) (Evenson and Gollin, 2003). This baseline has recently been updated, widened, and deepened in the CGIAR’s project Diffusion and Impact of Improved Crop Varieties in Sub-Saharan Africa (DIIVA), supported by the Bill and Melinda Gates Foundation. Seven CGIAR Centers and more than 200 individuals – mainly crop improvement scientists in national programs – participated in the DIIVA project, which was directed and coordinated by the Standing Panel on Impact Assessment (SPIA) of the CGIAR and administrated through Bioversity International.


ISPC, SPIA 2014. Adoption of modern varieties of food crops in Sub-Saharan Africa. Impact Brief No. 42.