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Components for the management of two insect pests of pearl millet in Sahelian West Africa*

Published online by Cambridge University Press:  19 September 2011

Kanayo F. Nwanze
Affiliation:
International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru P. O. Andhra Pradesh 502324, India

Abstract

Pearl millet, Pennisetum glaucum (L.) R. Br. is attacked by over 100 species of insect pests, but only a few of these are of economic importance. The two major ones, the millet stem borer, Coniesta ignefusalis Hampson and the earhead caterpillar Heliocheilus albipunctella de Joannis have been the subject of research in the Sahel during the last decade. The various methods that have been suggested for the control of these species are briefly discussed. Generally, the control strategy adopted by farmers involves the use of cultural operations that will reduce insect damage. There are no control measures that have been developed for farmers. The more scientific methods that have been suggested are the results from research trials and experiments. These have several limitations. Future perspectives and considerations for developing sound and practical farmer-oriented practices are discussed.

Résumé

Le mil, Pennisetum glaucum (L.) R. Br. est susceptible d'être attaqué par plus de 100 espèces d'insectes ravageurs, mais ce n'est quelques espèces qui sont d'une importance économique. Les deux espèces principales, le foreur des tiges du mil, Coniesta ignefusalis Hampson et la chenille des chandelles, Heliocheilus albipunctella de Joannis, ont fait l'objet des travaux de recherche dans le Sahel au cours de la dernière décennie. Les diverses méthodes proposées pour la lutte contre ces insectes sont exposées brièvement dans le présente article. D'une manière générale, la stratégie de lutte adoptée par les paysans consiste à utiliser des opérations culturales permettant de réduire les dégâts causés par les insectes. II n'existe pas de mesures de lutte mises au point pour les paysans en particulier. Les résultats des travaux de recherche et des expériences ont permis de proposer les méthodes plus scientifiques. Mais, celles-ci comportent plusieurs limitations. L'article présente finalement une analyse des perspectives de l'avenir ainsi que des facteurs à prendre en compte pour la mise au point de pratiques valables et efficaces et destinées aux paysans.

Type
Part II: Symposium on Insect Pests and Sustainable Food Production: Pest Management, Strategies and Practices
Copyright
Copyright © ICIPE 1991

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References

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