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Crop losses in cowpea due to the pod-sucking bugs Riptortus dentipes, Mirperus jaculus, Anoplocnemis curvipes and Nezara viridula

Published online by Cambridge University Press:  19 September 2011

Olufemi O. R. Pitan  and
J. A. Odebiyi
Olufemi O. R. Pitan
Affiliation:
National Horticultural Research Institute, P.M.B. 5432, Ibadan, Nigeria
J. A. Odebiyi
Affiliation:
Department of Crop Protection and Environmental Biology, University of Ibadan, Ibadan, Nigeria
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Abstract

The effects of increasing population densities of the cowpea pod-sucking bugs (PSB) Riptortus dentipes, Mirperus jaculus, Anoplocnemis curvipes and Nezara viridula were studied in caged potted cowpea (Vigna unguiculata) plants with infestation levels from 0 (control) to 12 adult bugs per cage. Generally, there was an increase in damage to cowpea (measured as damage to pods and seeds) with increasing in insect density. There was also a highly significant correlation between the number of infesting adult bugs and damage to pods and seeds, and a significant negative correlation between bug numbers and cowpea yield. The results suggest that control measures should be initiated at: 4 bugs (fourth instar and above) per 10 plants for R. dentipes and M. jaculus; 2 bugs per 10 plants for A. curvipes and 6 bugs per 10 plants for N. viridula at podding stage.

Résumé

Les effets de l'augmentation des densités de population des punaises suceuses de gousses de niébé, Riptortus dentipes, Mirperus jaculus, Anoplocnemis curvipes et Nezara viridula ont été étudiés en utilisant des plants de niébé (Vigna unguiculata) en pots, mis en cage avec des niveaux d'infestations compris entre 0 (témoin) et 12 punaises adultes. En général, on constate une augmentation des dégâts (sur gousses et graines) avec l'augmentation des densités d'insectes. Nous avons également pu établir une corrélation hautement significative entre le nombre de punaises adultes et les dégâts sur gousses et graines, et une corrélation significativement négative entre le nombre de punaises et la production de niébé. Les résultats suggèrent que pendant la formation des gousses, les mesures de lutte devraient être initiées à 4 punaises pour 10 plantes pour R. dentipes et M. jaculus, à 2 punaises pour 10 plantes pour A. curvipes et à 6 punaises pour 10 plantes pour N. viridula.

Keywords

cowpeainsect damageRiptortus dentipesAnoplocnemis curvipesMirperus jaculusNezara viridulaniébédégâtsRiptortus dentipesMirperus jaculusAnoplocnemis curvipesNezara viridula
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 21 , Issue 3 , September 2001 , pp. 237 - 241
Copyright
Copyright © ICIPE 2001

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References

Aina, J. O. (1975a) The life history of Riptortus dentipes F. (Heteroptera: Alydidae) a pest of growing cowpea pods. J. Nat. Hist. 9, 589–596.CrossRefGoogle Scholar
Aina, J. O. (1975b) The life history of Anoplocnemis curvipes F. (Heteroptera: Coreidae) a pest of growing cowpea pods J. Nat. Hist. 9, 685–692.CrossRefGoogle Scholar
Jackai, L. E. N and Daoust, R. A. (1986) Insect pests of cowpea. Annu. Rev. Ent. 31, 95–110.CrossRefGoogle Scholar
Jackai, L. E. N, Atropo, P. K. and Odebiyi, J. A. (1989) Use of response of the two growth stages of cowpea to different population densities of the coreid bug, Clavigralla tomentosicollis (Stal). Crop Protection 8, 422–428.CrossRefGoogle Scholar
Materu, M. A. E (1970) Nature and amount of damage caused by Acanthomia tomentosicollis and Acanthomia horrida Germ. (Hemiptera: Coreidae). E. Afr. Agric. J. 35, 429–35.CrossRefGoogle Scholar
Ojehomon, O. O. (1968) Flowering, fruit production and abscission in cowpea, Vigna unguiculata (L) Walp J. E West Afr. Sci. Assoc. 13, 227–234.Google Scholar
Pedigo, L. P., Hutchins, S.H. and Higley, L. G. (1986) Economic injury levels in theory and practice. Annu. Rev. Entomol. 31, 341–368.CrossRefGoogle Scholar
Schalk, J. N. and Fery, R. I. (1982) Southern green stink bug effect on cowpea production. J. Econ. Entoniol. 75, 72–75.CrossRefGoogle Scholar
Singh, S. R. and van Emden, H. E. (1979) Insect peste of grain legumes. Annu. Rev. Entomol. 24, 255–278.CrossRefGoogle Scholar
Singh, S. R. and Jackai, L. E. N (1985) Insect pests of cowpea in Africa: Their life cycles, economic importance and potential for control, pp. 217–231. In Cowpea Research Production and Utilisation (Edited by Singh, S. R. and Rachie, K. E.). John Wiley, London.Google Scholar
Singh, B. B., Jackai, L. E. N and Ntare, B.R. (1983) Cowpea Research at IITA. Inf. Ser. 14, 20 pp.Google Scholar
Stern, V. M., Smith, R. E., Van Den Bosch, R. and Hagen, K. S. (1959) The integrated control concept. Hilgardia 29, 81–101.CrossRefGoogle Scholar
Stern, V. M. (1973) Economic threshold. Annu. Rev. Entomol. 18, 259–280.CrossRefGoogle Scholar
Taylor, T. A. (1965) Observations on the bionomics of Laspyresia ptychora Meyr. (Lepidoptera: Eucosuidae) infesting cowpea in Nigeria. Bull. Entomol. Res. 57, 761–763.CrossRefGoogle Scholar
Thomas, G. D., Ignoffo, C. M., Morgan, C. E. and Dickerson, W. A. (1974) Southern green stink bug influence on yield and quality of soybean, J. Econ. Entomol. 67, 501–503.CrossRefGoogle Scholar
Wein, H. C. and Tayo, T. O. (1978) The effect of defoliation and removal of reproductive structures on growth and yield of tropical grain legumes, pp. 241–252. In Pests of Grain Legumes: Ecology and Control (Edited by Singh, S. R., Taylor, T. A. and van Emden, H. F.). Academic Press, New York.Google Scholar