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The effect of plant spacings on cowpea, Vigna unguiculata Walps, insect pests and yields in two sites in Nigeria

Published online by Cambridge University Press:  19 September 2011

Aliyageen M. Alghali
Aliyageen M. Alghali
Affiliation:
International Institute of Tropical Agriculture (IITA), PMB 5320, Ibadan, Nigeria
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Abstract

An experiment to examine the effects of different plant spacings on cowpea insect numbers and yields was undertaken at two sites in Nigeria. Two varieties, viz. Tvx 3236 and IT84E-1-108 were planted under field conditions at three different plant spacings. Plant spacing did not affect the number of Ootheca beetles, pod-borers, flower thrips and pod sucking bugs. Yield differences were not significant for the spacing regimes and there were no interactions between spacings and insect numbers for yields. Thus, plant spacing may not be an important control tactic in the management of the key cowpea insect pests in Nigeria.

Résumé

Une expérience d'examiner les effets des différents écartements des plants sur le nombre des insectes du niébé et la récolte a été entreprise en deux sites au Nigéria. Deux variétes telles que: TVX 3236 et IT84E-108 étaient plantées en champs avec 3 différent écartements.

L'écartement des plants m'a par affecté le nombre des Coléoptères Ootheca, foreurs de gousse, thrips des fleurs et les punaises succeuses de gousse. La différence de récolte n'était pas significative pour les différents écartements et il n'y a pas en d'interactions entre les écartements et le nombre d'insectes pour les récoltes. Ainsi, l'écartement des plants peut ne pas étre un facteur important de contrôle des principaux insectes du niébé au Nigéria.

Keywords

Cowpeapestsplant spacingsgrain yieldresiduesNiébéravageurs écartement des plantsla récolte des grains les residus
Type
Part II: Symposium on Insect Pests and Sustainable Food Production: Pest Management, Strategies and Practices
Information
International Journal of Tropical Insect Science , Volume 12 , Special Issue 5-6: Aspects of Pest Management in Relation to Agricultural Production and Environmental Conservation in Africa , December 1991 , pp. 707 - 711
Copyright
Copyright © ICIPE 1991

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References

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