The cotton bollworm, Helicoverpa armigera, is the most damaging cotton pest in West Africa. To control this pest in sub-Saharan Africa, only chemical sprayings are applied. These include a combination of a pyrethroid for the control of bollworms and an organophosphate to control other members of the pest complex and to enhance the effectiveness of pyrethroid against bollworms. Intensive use of these chemical insecticides against H. armigera has led to the development of resistance to the major chemical families of insecticides. This paper reviews the research work aimed at controlling H. armigera by using parasitoids, predators, micro-organisms, plants extracts as well as other environmentally-friendly compounds, for their possible use against H. armigera on cotton, as part of a pyrethroid resistance management strategy in West Africa. It also includes research work on kaolin formulation as crop protectant.
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Thiery B. C. Alavo (2006) studied this question.
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