Should not be too hard. Mostly Africa still has a lot of catching up to do in terms of modern farming practices. They could easily make huge improvements simply by doing what the rest of the world has done for decades. And that's before you consider sustainable practices that are currently revolutionizing agriculture which improve productivity by using resources like water and nutrients more optimally which is of course super relevant in places where these things are scarce.

African economies are growing rapidly and as a result they are getting a lot smarter about how they use their resources. Also, there are a lot of African entrepreneurs getting into farming.