Gliricidia impacts on soil fertility, crop yields and nutrition in Zambia

The main objective of the research is to advise Norad on the relevance of continued support to Gliricidia based agroforestry systems under CA – and to assess the potential return rate – in social, economic, environmental and agronomic terms of such systems, as well as potential risk of the farming system for smallholders.
1)To evaluate crop yields of maize-legume systems and study the impacts on soil nutrient balance (e.g. N, P, organic Carbon) under Gliricidia-based agroforestry systems at different levels of intensification and land degradation levels
2)To establish the impact of Gliricidia-based agroforestry systems (as a soil management practices) on the soil nutrients uptake and crop nutrient composition.