Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-29T18:56:41.250Z Has data issue: false hasContentIssue false
  • English
  • Français

Corn earworm infestation of seven maize cultivars and control in south-western Nigeria

Published online by Cambridge University Press:  19 September 2011

Ajibola M. Daramola
Ajibola M. Daramola
Affiliation:
Institute of Agricultural Research and Training, University of Ife, P.M.B. 5029, Moor Plantation, Ibadan, Nigeria
Get access

Abstract

The corn earworm damage to seven maize cultivars TZB, TZPB, WYI, 096EP6, Farz 25, ‘Kewesoke’ and Local White, was assessed during the early and late cropping seasons of 1980 and 1981 at Ikenne and Ilora located in the rain-forest and derived savanna zones, respectively. The effectiveness of dimethoate and permethrin in controlling the earworms was evaluated. All the cultivars appeared susceptible to earworm infestation in the two ecological zones. Infestation was consistently and significantly higher in the early season and also in the rain-forest zone. It ranged from 71.5 to 86% in the early and from 28 to 36.8% in the late seasons, respectively, at Ikenne. At Ilora, infestation ranged from 53 to 82% and from 20 to 75% in the early and late seasons, respectively. Mussidia nigrivenella and Heliolhis armigera were the dominant species recorded damaging the grains.

Earworm infestation was significantly lower on plots treated wtih three applications of 0.05 and 0.1% a.i. permethrin at weekly intervals than on plots that received the same dosages and sprays of dimethoate and the control. Maize yields were significantly higher on permethrin-treated plots. The lower dosage of permethrin is recommended to reduce chemical residue on maize grains.

Résumé

Pendant les saisons précose at dernier dans les ans 1980 et 1981, le degat qui les grains lombrics causent au sept mais cultivars, TZB, TZPB, WYI, 096EP6, Farz 25, Kewesoke et Blanc Local a estimé dans la zone forêt pluie à Ikenne et à la zone Savannah derive a Ilora. L'effet vigueur des dimethoate et permethrin à diriger les lombri à estimé. Tous les cultivars ont apparu sensible au infestation lombric dans les deux zones écologiques. L'infestation a été fort significant pendant la saison précose et dans la zone forêt plute aussi. Il a rangé de pour cent 72,5 à 80 dans la saison précose et de pour cent 28 à 36,8 dans la saison dernière à Ikenne et Ilora respectifment. Mussidia nigrivenella et Heliothis armigera é taient species dominates parmi les lombrics qui c'endommagaient les grains.

L'infestation lombric etait plus bas significantment sur les terrains qui s'ont appliqué les trois doses des 0,05 et 0,1 pour cent'du permethrin par semaine intervalle quelles terraine qui s'ont appliqué les mêmes dosages et atomiseurs de dimethoate. Les rendement des mais étaient plus grand significantment sur les terrains qui s'ont appliqué de permethrin. La dosage plus bas de permethrin c'est recommandé pour la crainte du résidu chimique sur les grains mais.

Keywords

Corn earwormMussidia nigrivenellaHeliothis armigeradimethoatepermethrincontrolLes grain lombricsMussidia nigrivenellaHeliothis armigeradimethoatepermethrincontrol
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 7 , Issue 1 , February 1986 , pp. 49 - 52
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

Adesuyi, S. A. (1976) The control of insect infestation on maize stored on the cob in cribs using different doses of Pirimiphos-methyl. Niger. J. Pl. Prot. 2, 70–73.Google Scholar
Adeyemi, S. A. O., Donnelly, J. and Odetoyinbo, J. A. (1966) Studies on chemical control of the stem borers of maize. Niger, agric. J. 3, 61–66.Google Scholar
Cornes, M. A. and Adeyemi, S. A. (1964) Control of field-to-store pests of maize ears. II. Early crop maize, 1964. Annual Report; Nigerian Stored Products Research Institute, Technical Report No. 13, pp. 69–75.Google Scholar
Cornes, M. A., Donnelly, J. and Adeyemi, S. A. (1965) Control of field-to-store pests of maize ears. III. Late crop maize 1964. Annual Report; Nigerian Stored Products Research Institute, Technical Report No. 13, pp. 77–83.Google Scholar
Daramola, A. M. (1986) Comparative effectiveness of carbofuran and carbaryl in the control of maize stem borer. Niger. J. PI. Prot. In press.Google Scholar
Denton, O. and Fajemisin, J. M. (1976) Improved and adaptive varieties: A must for accelerated maize production in the humid rain forest zone of Nigeria. Symposium on Appropriate Approaches for the Accelerated Food Production in the Rainforest zone of Nigeria, p. 14. University of Nigeria, Nsukka.Google Scholar
Donnelly, J. and Cornes, M. A. (1964) Control of field-to-store pests of maize ears. I. Late crop maize, 1963. Annual Report; Nigerian Stored Products Research Institute, Technical Report No. 12, pp. 65–68.Google Scholar
Harrison, P. F. (1962) On the control of corn earworm, Heliothis zea and dust sap beetle, Carpophilus lugubris in sweet corn. J. econ. Ent. 55, 671–674.CrossRefGoogle Scholar
Metcalf, M. A. and Flint, W. P. (1951) Destructive and Useful Insects. Their Habit and Control. McGraw-Hill, New York.Google Scholar
Obajimi, O. A. (1975) The need for a new maize for small peasant holdings. Proceedings of the 3rd Annual Conference of the Genetics Society of Nigeria, pp. 54–58.Google Scholar
Semel, M. (1959) Control of the earworm attacking sweet corn. J. econ. Ent. 52, 1111–1114.CrossRefGoogle Scholar
Usua, E. J. (1966) Stem borers of maize in Western Nigeria with particular reference to Busseola fusca (Fuller) and Sesamia species (Lepidoptera: Noctuidae). M.Sc. thesis, University of Ibadan, Nigeria.Google Scholar
Walker, P. T. (1960) Insecticide studies on the maize stalk borer, Busseola fusca (Fuller), in East Africa. Bull. ent. Res. 51, 321–351.CrossRefGoogle Scholar