Fairtrade is all well and good, ((Though just plain and simple trade would be enough for some, I expect.)) but African agriculture needs roads too.
Agricultural Biodiversity Weblog
Agrobiodiversity is crops, livestock, foodways, microbes, pollinators, wild relatives …
Nice map comparison of Bamako.
The Geographical Institute in Bamako DOES have a reasonable map of Bamako (although not all of the urban sprawl is on it), but it is not available digitally is a far as I know.
Paul Collier in his highly readable The Bottom Billion has much to say about what African agriculture and economies need, including diversification out of a narrow range of primary commodities that have kept people locked into poverty.