The results of a case study conducted in Betulia (Sucre, Colombia) in May-Dec. 1983 to evaluate the competition for land between cassava cultivation (monocropped or in association with maize or yam) and cattle raising are discussed. In general, profits from cassava either in association or in monoculture are much higher than for cattle raising. Regarding labor requirements, cassava cultivation and cattle raising are equally attractive from an economic viewpoint.

Discusses the historical context of ILCA's research, the principal types of animal production systems and the stages in ILCA's farming systems research. Describes the smallholder farming in the Ethiopian highlands & humid zone, the agropastoralists of the sub-humid zone, systems research in pastoral areas of eastern Africa (Kenya & Ethiopia), characteristics of the arid and semi-arid zones of West Africa and the role of modelling in the system. Ends with a summary of past experience.

This note is part of an on-going effort to gain insights to impact assessment and research uptake literature of relevance to natural resource management-related research. It is provided more for the reference list than for the merit of the associated text that is still at an early stage. Many more references have been collected but have yet to be screened for their potential relevance.

Developments in the international institutional context and in the capacity of governments to ensure sustainable forest management in Central Africa lead to new approaches to participatory management being explored. The author reviews current initiatives in this field in Congo Brazzaville, Gabon, Cameroon, Central African Republic and Equatorial Guinea. Such initiatives are still in an experimental stage and aim at answering issues linked with conventional forest management as well as meeting prerequisites imposed by international organisations for granting aid to development.

Presents and discusses ILCA's research on smallholder farming in the highlands, village sheep and goat production in the humid zone, cattle production in the subhumid zone, pastoral production in the arid zones of West Africa, range livestock production in eastern and southern Africa, and breed evaluation and herd modelling.