The term culture system with the incorporation of legumes at flowering between the lines of the main crop, is a novelty for Angolan agriculture when it comes to food crops in the group of roots and tubers which fits cassava and even in the case of cereals. Our work aims to: Contribute to sustainable agriculture in the areas of cassava production in Angola, as well as the transfer of technology to promote the improvement of agricultural production systems in terms of family farmers, who constitute the majority of small, medium farms and why not also in the creation of large companies, resorting to low-cost technologies and the scope of farmers, improve the productivity of this crop and the quality of final product, thereby providing better living conditions, socioeconomic and environmental practice sustainable agriculture by maintaining and improving the physical characteristics and soil fertility, using the system of crops, with the use of leguminous trees and shrubs Leucaena and Cajanus fairly disclosed in the country. The incorporation of legumes in two lines of cassava by a total of two cultural cycle of cassava a year, promoted: greater availability of soil nutrients, increased production per unit area, improved quality of tuberous roots. It also led to good correlation between the production and macro soil nutrients other than phosphorus

Doutoramento em Engenharia Agronómica - Instituto Superior de Agronomia