Chapter 5. Hans R. Herren. 1990. The Africa-wide biological control program. Pages 33-41. In: S. K. Hahn, F. E. Caveness (editors). Integrated Pest Management for Tropical Root and Tuber Crops, IITA, Ibadan, Nigeria, 235 pages.

Keywords: the cassava mealybug Phenacoccus manihoti and the cassava green mite Mononychellus tanajoa spread rapidly since their discovery in 1971 and are now in 31 of 35 countries in the African cassava belt, classical biological control has been able to curtail much of their damage by introducing and mass producing exotic parasitoids and predators against these arthropod pests, summary of achievements have been exploration to find promising candidates, basic research to determine host range and efficacy of each candidate, experimental release and monitoring of biological and economic impact, spread pattern and present distribution of the cassava mealybug and the cassava green mite in Africa, world-wide collaborative research and training network of the Africa-wide Biological Control Program (ABCP), mass rearing, aerial release, release sites of cassava mealybug natural enemies and the establishment and spread of Epidinocarsis lopezi parasitoid, areas and species of cassava green mite predators released in different ecological zones of Africa, training, initiation and support of national biological programs, the future of ABCP, long-term and short- and medium-term approaches