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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

REFERENCES

Alghali, A. M. (1984) Effect of plant spacing on the infestation levels of rice by the stalk-eyed borer, Diopsis thoracica West (Diptera: Diopsidae). Trop. Agric. (Trinidad) 61, 74–75.Google Scholar
Alghali, A. M. (1991a) Studies on cowpea farming practices in Nigeria with emphasis on insect pests control. Trop, Pest Manage. (In Press).CrossRefGoogle Scholar
Alghali, A. M. (1991b) Assessment of grain yield losses caused by insects to cowpea in Nigeria. Insect Science Applic. (In Press).Google Scholar
Alghali, A. M. (1991c) Integrated pest management strategy for cowpea production under residual moisture in the Bida area of northern Nigeria. Trop. Pest Manage. (In Press).CrossRefGoogle Scholar
Alghali, A. M. (1991d) The effects of some agrometeorological factors on flower thrips, Megalurothrips sjostedti Trybom. (Thysanoptera: Thripidae) fluctuations on two cowpea varieties. Malaysian J. Plant Prot. Trop. (in Press).Google Scholar
Ezueh, M. I. (1981) Nature and significance of preflowering damage by thrips to cowpea. Entomol. Exp. Appl. 29, 305–312.CrossRefGoogle Scholar
Ezueh, M. I. and Taylor, T. A. (1984) Effect of time of intercropping with maize on cowpea susceptibility to three major pests. Trop. Agric. (Trinidad) 61, 82–86.Google Scholar
Kyamanywa, S. and Ampofo, J. K. O. (1988) Effect of cowpea/maize mixed cropping on the incident light at the cowpea canopy and flower thrips (Thysanoptera: Thripidae) population density. Crop Prot. 7, 186–189.CrossRefGoogle Scholar
Lawson, T. L. and Jackai, L. E. N. (1988) Microclimate and insects population in mono and intercropped cowpea (Vigna unguiculata, Walps). In Proceedings of the Seminar on Agroclimatology and Crop Protection in the Lowland Humid and Sub-humid Tropics. Cotonou, Benin 7–11 July, 1986 (Edited by Rijks, D. and Mathys, G.), pp. 231–244. CTA, Wageningen.Google Scholar
Mensah, G. W. K. (1988) Relative effectiveness of insecticide sprays on insect damage and yield of three cowpea cultivars in Swaziland. Insect Sci. Applic. 9, 101–108.Google Scholar
Ofuya, T. I. (1987) Effect of spacing in cowpea (Vigna unguiculata) on damage by the black cowpea moth, Cydia ptychora. Ann. Appl. Biol. 111, 773–776.CrossRefGoogle Scholar
Ofuya, T. I. (1989) Effect of weed removal regimes on post-flowering insect damage and grain yield of cowpea, Vigna unguiculata (L) Walp. in a rain forest area of Nigeria. Trop. Agric. (Trinidad) 66, 142–144.Google Scholar
Rachie, K. O. (1986) Introduction. In Cowpea Research, Production and Utilisation (Edited by Singh, S. R. and Rachie, K. O.), pp. xxi–xxviii. John Wiley and Sons, New York.Google Scholar
Raheja, A. K. (1976) ULV spraying for cowpea in Northern Nigeria. PANS 22, 327–332.CrossRefGoogle Scholar
Raheja, A. K. and Hayes, H. M. (1975) Sole crop cowpea production by farmers using improved practices. Trop. Grain Legume Bull. 1, 6.Google Scholar
Singh, S. R. and Jackai, L. E. N. (1986) Insect pests of cowpeas in Africa: Their life cycle, economic importance and potential for control. In Cowpea Research, Production and Utilisation (Edited by Singh, S. R. and Rachie, K. O.), pp. 217–231. John Wiley and Sons, New York.Google Scholar
Singh, S. R. and Taylor, T. A. (1978) Pests of grain legumes and their control in Nigeria. In Pests of Grain Legumes: Ecology and Control (Edited by Singh, S. R., van Emden, H. F. and Taylor, T. A.). Academic Press, London, UK.Google Scholar
Ukwungwu, M. N. (1987) Some effects of plant densities and carbofuran on the damage by Diopsis thoracica West and Marliapha separatella Rag. and yield of rice in Nigeria. Trop. Pest Manage. 33, 280–282.CrossRefGoogle Scholar