In this exhaustive compendium, a number of the foremost authorities on agriculture in Africa, many of them African, sum up current understanding of a complex and relatively inexact science. Focusing broadly on the dimensions of the problem-the state of available technology, marketing and support systems, government and donor policies-the varied voices of 42 contributors leave one strong impression: no single means will suffice to spur Africa's flagging farm productivity-infrastructure, research, training, management and incentives are all essential.