most other places use sugar cane to do it, so i guess it affect on food depends on where you live,
btw even in africa there is lots of food being spoiled, as some times there are old huge plantations that still produce some what that don't have roads to it (there is one of pinaple, and another of mango in mozambique for example), most of it just rots away.
btw africa kind of deserves its fate, if you try to do any business there like making corn, you will be fucked at every step of the way, i saw a company shutting down (it was there first year i think) because the fuckers stole 90% of the production.
they planted in circles to be easy to water it, they just left 40 cm of corn at the end of the circle to hide it all rest was gone.
Fact: most african countries only use democracy as a cover up (same party since independence with always 80% of the votes even when the whole country seems against them ya right )