Why have so many approaches to farming and food policy failed in Sub-Saharan Africa? Because, argues William Moseley in this compelling analysis, of the shortcomings of a prevailing western, colonial agricultural science that is infused with power and politics. To tackle food security successfully, the book argues, we need a non-colonial, indigenous agronomy that creates the social innovation needed to support the livelihoods of small-scale farmers. The book is organized in four sections: Part 1 provides a broad conceptual introduction emphasizing political agronomy, political ecology and agroecology. Part 2 evaluates past food security and agricultural development experiences in four countries where Moseley has undertaken extensive field research over several decades: Mali, Burkina Faso, South Africa and Botswana. Part 3 examines successful efforts in each of these countries and outlines future directions that emphasize the application of ecological principles to agricultural