There's a lot of problems African farmers confront. Firstly, they usually don't add pesticides to the crops, therefore, the insects will devour the crops. Secondly, lack of finical support, they're not able to grow their fields and make profit out of their hard work. Thirdly, the climate change; since most people don't care about climate change, most people in remote countries will have to face the different weather patterns. Lastly, the technology, most African farmers have to hand pick each crop instead of having a machine.
I hope this helps! This is all in my own words...