Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-19T08:43:31.801Z Has data issue: false hasContentIssue false
  • English
  • Français

Weeding as a means of reducing the population of grasshopper pests and damage on pearl millet [Pennisetum americanum (L.) K. Schum] in northern Nigeria

Published online by Cambridge University Press:  19 September 2011

C. I. Amatobi ,
S. A. Apeji  and
O. Oyidi
C. I. Amatobi
Affiliation:
Department of Crop Protection, Ahmadu Bello University, Zaria, Nigeria
S. A. Apeji
Affiliation:
Department of Crop Protection, Ahmadu Bello University, Zaria, Nigeria
O. Oyidi
Affiliation:
Department of Crop Protection, Ahmadu Bello University, Zaria, Nigeria
Get access

Abstract

A millet farm was divided into five treatment plots of three replicates. The population of the grasshoppers was assessed by flushing and the percentage leaf damage on the millet was estimated by visual grading of the defoliated area. Weeding discouraged oviposition and reduced the vegetative shelter and the population of the grasshoppers. The unweeded plots had high levels of defoliation and low grain yield of millet relative to the weeded plots. Oedaleus spp were the most numerous grasshoppers and probably caused the greatest damage on pearl millet. The common weeds on the farm were Brachiaria xantholeuca, Cenchrus biflorus, Ipomoea vagans and Mitracarpus scaber.

Résumé

Une ferme de millet était divisée en cinq parcelles de traitement pour trois copies. La population des sauterelles fut évaluée par moyen d'inondation et le pourcentage de dégât aux feuilles des millet fut estime par classement visuel des parties défoliées. Le sarclage avait découragé “l'oviposition”, et avait réduit l'abri végétatif et la population des sauterelles. Les parcelles qui n'étaient sarclées révélèrent des quantités élevées de défoliation et un faible rendement de millet, par rapport aux parcelles sarclées. Les sauterelles les plus nombreuses étaient de l'espèce Oedaleus spp., qui causaient probablement le plus grand dégât au millet. Le Brachiaria xantholeuca, le Cenchrus biflorus, l'Ipomoea vagans et le Mitracarpus scaber étaient l'espèce de mauvaises herbes courantes sur la ferme.

Keywords

Grasshopper populationweedingmillet farmdefoliationgrain yield
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 7 , Issue 1 , February 1986 , pp. 99 - 102
Copyright
Copyright © ICIPE 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Bei-Bienko, G. Ya (1928) Synopsis of the West Siberian grasshoppers (Orthoptera). Rev. appl. Ent. 15, 418.Google Scholar
Clark, L. R. (1947) Ecological observation on small plague grasshopper, Auslroiceles cruciata (Sauss) in the New South Wales. Bull. Court. Scient, lnduslr. Res. 228, 26.Google Scholar
Golding, F. D. (1948) The Acrididae (Orthoptera) of Nigeria. Trans. R. ent. Sue. Lond. A43, 27–38.Google Scholar
Hergert, C. R. (1975) An analysis of grasshopper problems in Kano State. Samaru agric. Newsl. 17, 91–94.Google Scholar
Joyce, R. J. C. (1952) The ecology of grasshoppers in the East Central Sudan. Anti-Locust Bull. II, 99.Google Scholar
Phipps, J. (1968) The ecological distribution and the life cycle of some tropical African grasshoppers (Acrididae). Bull. ent. Soc. Nigeria 1, 71–97.Google Scholar
Pollard, E. (1968) Hedges III. The effect of removal of the bottom flora of hawthorn hedgerow on the Carabidae of the hedge bottom. J. appl. Ecol. 5, 125–139.CrossRefGoogle Scholar
Vinokurov, G. M. and Rubtzov, I. A. (1930) Studies on the ecology of grasshoppers in Irkutk Region. Rev. appl. Ent. 19, 79.Google Scholar