Integrating biological control and host plant resistance
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CTA. 1997. Integrating biological control and host plant resistance. CTA, Wageningen, The Netherlands
Permanent link to this item: http://hdl.handle.net/10568/63715
This publication features the working group reports presented at the seminar on thematic, regional (Southern Africa, Eastern Africa, and West and Central Africa) and crop-centred (cowpea, cotton, coffee and cereals) issues.
For farmers in low external input agricultural systems in developing countries, host plant resistance (HPR) and biological control (BC) are potentially effectivemethods of insect pest control. Both are generally inexpensive, durable, non-polluting and locally improvable, which makes them sustainable components of integrated pest management (IPM). However, the possibilities and advantages for integrating host plant resistance and biological control have not been fully explored. While the relationship between biological control and host plant resistance will be generally positive, in some conditions, the overall effect on pest population is less than the sum of the effect of each factor. In principle, therefore, the positive integration of HPR and BC can have two objectives: additive or synergistic reduction of pest densities and protection of durability. Together with the Institute of Agricultural Research (IAR), Ethiopia and the International Institute of Biological Control (IIBC), CTA organised an African regional seminar on Insect Pest Control for Smallholders: Integrating Biological Control and Host Plant Resistance from to 14 October in Addis Ababa, Ethiopia. Scientists from countries and from four European countries, aswell as representativesfrom CAB International, CTA, FAO, ICIPE and ICRISAT attended the meeting. The objectives of the seminar were to promote contact and exchange of experience on issues relating to the development of pest control through integrated pest management, and to develop strategies to integrate HPR and BC. Plenary sessions at the seminar examined the following topics: IPM in complex African farming systems; breeding for host plant resistance in IPM; the role of genetic resources in IPM; biological control of insect pests in an IPM context; host plant-insect-parasitoid interactions. Short communications were presented in three regional and three commodity sections to prepare the working groups on the following themes: developing protocols for the integration of HPR and BC; identifying research needs to study the interactions of HPR and BC; improving farmers perceptions of HPR and BC in Africa. This summary report features the reports of the seminar’s working groups dealing with thematic, regional and crop-centred issues. It also contains a summary text, based upon the recommendations of the working groups.