Robert Paarlberg says organic isn't the answer:
Africa faces a food crisis, but it's not because the continent's population is growing faster than its potential to produce food, as vintage Malthusians such as environmental advocate Lester Brown and advocacy organizations such as Population Action International would have it. Food production in Africa is vastly less than the region's known potential, and that is why so many millions are going hungry there. African farmers still use almost no fertilizer; only 4 percent of cropland has been improved with irrigation; and most of the continent's cropped area is not planted with seeds improved through scientific plant breeding, so cereal yields are only a fraction of what they could be. Africa is failing to keep up with population growth not because it has exhausted its potential, but instead because too little has been invested in reaching that potential.One reason for this failure has been sharply diminished assistance from international donors. When agricultural modernization went out of fashion among elites in the developed world beginning in the 1980s, development assistance to farming in poor countries collapsed.