Alley cropping soil productivity and nutrient recycling
Abstract
In the past few decades has been growing concem about the exhaustibility of non-renewable soil resources in developing countries in the tropics to meet the needs of present and future generations
Land degradation is a major problem in many parts of the tropics, including sub Saharan Africa, mainly owing to overexploitation of vegetation and and soil resources and adoption of inappropiate farming methods
The challenge is to increase the sustainable agricultural productivity of the land with acceptable inputs to meet increasing human needs, while maintaining the soil resource base and minimising environmental degradation