Africa has probably 60% of the world's arable land and is extremely fertile. The cause of food shortages in Africa is never, even in the worst droughts, that there is not enough land.

Food crises in Africa are always, with I think, no exceptions, caused by 1. political turmoil that makes it impossible or difficult to use the land well, or 2. wars or 3. genocidal policies by one or more population or tribe toward another.