Nutrient cycles in three African cities.

Abstract

This paper summarizes and discusses the findings of the study on nutrient cycles in urban agriculture in three cities: Nairobi and Nakuru in Kenya, and Yaoundé in Cameroon. These studies indicate the scale of nutrient production and its uneven recycling through farming in African cities. They also suggest some of the main parameters for improving the efficiency of such recycling. The role played by small urban mixed crop-livestock farms is clearly important, while the potential for exporting nutrients to rural farms and even other cities is demonstrated in both Yaoundé and Nakuru.