Objective In most tropical soils nitrogen is the most important element that limits crop yield. Traditionally soil nutrient deficiency have been corrected through the application of chemical fertilizers. However, most farmers in Africa cannot afford the high cost of inorganic fertilizers leading to impoverished soils with concurrent low crop yields. Biological Nitrogen Fixation (BNF) an inexpensive and ecologically sound process is capable of supplying the nitrogen needs of many plants and if well managed can assist in the restoration of soil fertility and high crop yields. The African Association of Biological Nitrogen Fixation (AABNF) was founded in 1984. A major aim of the association is to bring scientists working on BNF closer together to exchange research ideas and to discuss strategies for enhancing the use and benefits from BNF in agriculture and the environment. Members of the Association have since been meeting every other year at a selected venue. In addition to the African scientists their counterparts from Europe and other continents who may be working on the state of the art areas in BNF are invited to present their research findings and who eventually become mentors for postgraduate students. These benefits are evidence of contributions made by the European counterparts towards capacity building and collaborative research. The AABNF has usually depended ... Fields of science social sciencessociologydemographyfertilityagricultural sciencesagriculture, forestry, and fisheriesagriculture Programme(s) FP5-INCO 2 - Programme for research, technological development and demonstration on "Confirming the international role of Community research,1998-2002" Topic(s) Data not available Call for proposal Data not available Funding Scheme ACM - Preparatory, accompanying and support measures Coordinator UNIVERSITY OF GHANA EU contribution No data Address 10 ACCRA Ghana See on map Total cost No data