El fuego es a veces enemigo, a voces amigo, segn el uso a que se destine la tierra y segn el valor que asuman unas cuantas variables ambientales; en cualquier caso, siempre repercute en los ecosistemas de recursos naturales. Es esencial, por consiguiente, tener en cuenta su efecto probable (tanto positivo, como negativo) al formular planes y programas de desarrollo forestal.

Depending on land management objectives, plus a host of environmental variables, fire will sometimes be an enemy, at other times a friend; in nearly all cases, however, it will continue to exert a powerful influence on natural resource ecosystems. This being so, consideration of the potential impact (both positive and negative) of fire is essential in all land-use plans and programmes for forestry development.

Selon les objectifs que l'on se fixe en matire d'amnagement des terres, selon aussi toute une foule de variables lies l'environnement, le feu peut tre un ennemi ou un ami; mais presque toujours, il continuera d'exercer une puissante influence sur les cosystmes naturels et leurs ressources. C'est pourquoi il faut, dans tous les plans d'utilisation des terres et programmes de mise en valeur des forts, tenir dment compte des effets potentiels (tant positifs que ngatifs) de l'lment feu.

The mission to Holetta, Ethiopia was undertaken from January 22 to 26 following; receipt by the Director of the Joint ECA/FAO Agriculture Division of a request from the Head of the Training and Manpower Development Service of the Institute of Agricultural Research of Ethiopia for advice and assistance in servicing a national workshop on agricultural research.

Using the farm as unit of analysis, diagnosis processes aimed at improving production systems are reviewed. Within a country, diagnosis should be conducted at different hierarchical levels: local (interaction between the production system and the input distribution sector, the marketing sector, possible forms of processing, and consumption characteristics); regional (appropriate selection of target site); and national (development trends and governmental policies at the macroeconomic and sectorial levels).

Summarises past and present experiences with livestock performance testing in sub-Saharan Africa and outlines the role of networks in improving on-farm testing through the use of standardised testing methods and rapid data handling and feedback. Includes data on the distribution of cattle and sheep populations by ecological zone in sub-Saharan Africa. Presents current programmes for on-farm and on-station performance recording.

Local Authority
The section of Githurai west of the highway falls under the
jurisdiction of the Nairobi City Commission. The rest, which
is east of the highway falls under the jurisdiction of the
Kiambu County Council.
Ownership and Acquisition
Until 1967 the land belonged to a dairy farmer. His workers
had set up a co~operative with the intention of buying off
the farm from him. They formed a compa~y called Githurai
Thinganga. The land they bought consisted of three plots,

The main objective of the symposium was to assess the performance of Farming Systems Research (FSR) in the sub-region in terms of new knowledge generated, technical agricultural research results, research methods and techniques, multi-disciplinary practices, the participation of farmers and extension workers in the research process, and the degree of institutionalization of the approach itself. An additional objective of the symposium was to identify priority areas and themes for collaborative research projects and research funding requests in the sub-region.

This proceeding report is divided in three sessions. In the first session papers on African forage plant genetic resources in Zimbabwe, Botswana, Malawi and the PANESA region are presented. The second session discusses forage germplasm evaluation. In this session experiences of ILCA, Tanzania, Mauritius, Uganda, Malawi, Ethiopia and Kenya are presented. Species involved in the studies included Brachiaria, Cynodon, Trifolium, Lablab, Zornia, Stylosanthes and Crotalaria. The third session deals with extensive livestock production systems.

Presents papers dealing with various aspects of livestock production in tsetse affected areas of Africa, particular tsetse challenge, trypanosomiasis epidemiology, trypanotolerance, biological productivity, chemotherapy, economics, and genetics of trypanotolerance.