Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-18T07:54:13.975Z Has data issue: false hasContentIssue false
  • English
  • Français

Persistence of Insecticides Against Larvae of Plutella Xylostella (L.)

Published online by Cambridge University Press:  19 September 2011

Rosli B. Mohamad  and
Mohd. Yunus Ismail
Rosli B. Mohamad
Affiliation:
Department of Agronomy and Horticulture, University Pertanian Malaysia, 43400 UPM Serdang, Selangor, Malaysia
Mohd. Yunus Ismail
Affiliation:
Department of Agronomy and Horticulture, University Pertanian Malaysia, 43400 UPM Serdang, Selangor, Malaysia
Get access

Abstract

Persistence of four insecticides (prothiofos, Bacillus thuringiensis Berliner, fenveralate and methamidophos) were evaluated against the larvae of Plutella xylostella (L.), under field conditions. The effective biological action of the chemicals against the larvae varied with different instars. The insecticides were biologically effective for 6 to 8 days after treatment against first and second instars, and their index of persistent toxicity was higher than that for third and fourth instars. They were effective against third and fourth instars only for one day after spraying. Prothiofos and B. thuringiensis were more toxic to all the instars than methamidophos or fenveralate.

Résumé

La persistence de quatre insecticides (prothiophos, Bacillus thuringiensis Berliner, fenveralate et methimidophos) a ete evaluee contre les chenilles de Plutella xylostella (L.) sous les conditions des champs. L'action biologique effective contre l'espece etait variable selon les stades larvaires. Les produits chimiques etaient active biologiquement pour une duree plus longue (six a huit jours apres le traitement) contre le premier et le deuzieme stade larvaire. Les indices de toxicite persistente de ces produits chimiques etaient plus hauts pour ces stades larvaires que pour le troizieme et le quatrieme stade larvaire. La periode de persistence etait reduite jusqu'un jour apres le traitement pour le triozieme et quatrieme stade larvaire. Prothiophos et B. thuringiensis montraient une toxicite plus grande pour tous les stades larvaires.

Keywords

PersistencePlutella xylostella (L.)methamidophosfenveralateprothiofosBacillus thuringiensis BerlinerPersistencePlutella xylostella (L.)methamidophosfenveralateprothiofosBacillus thuringiensis Berliner
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 9 , Issue 1 , February 1988 , pp. 109 - 112
Copyright
Copyright © ICIPE 1988

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

Burt, P. E. and Ward, J. (1956) The persistence and fate of DDT on foliage. Bull. Ent. Res. 46, 39–56.CrossRefGoogle Scholar
Lim, G. S. (1984) Diamond-back moth problem and management in Malaysia. In 17th Int. Congr. Ent. Hamburg, West Germany, Abstracts.Google Scholar
Jusoh, M., Heong, K. L. and Lim, G. S. (1982) Assessment of cabbage losses inflicted by the diamond-back moth in Peninsular Malaysia. MARDI Res. Bull. 10, 186–194.Google Scholar
Mohamad, R., Ibrahim, Y. and Chong, C. W. (1980) The residual effect of some insecticides on Plutella xylostella (L.) larvae in the glasshouse. Pertanika 3, 10–12.Google Scholar
Nangia, N. and Thontadarya, T. S. (1986) Persistent toxicity of some pesticides against two larval parasitoids oiOpsina arenosella Walker. In 2nd International Conference on Plant Protection in the Tropics (Extended Abstract). pp. 203–204. Genting Highlands, Malaysia.Google Scholar
Pradhan, S. (1967) Strategy of integrated pest control. Indian J. Ent. 29, 105–122.Google Scholar
Sivapragasam, A. (1983) Problems and control of the diamond-back moth, Plutella xylostella (L.) (Lepidop-tera: Yponomentidae) in the Cameron Highlands, West Malaysia. In Proc. of the Symposium on Pest Ecology and Pest Management. (Edited by Haines, C. P.), pp. 235–239. BIOTROP, Bogor, Indonesia.Google Scholar
Wan, M. T. K. (1970) The bionomics and control of the diamond-back moth, Plutella xylostella L. (P. maculipenis Curt.) (Lep.1. Plutellidae) in Sarawak (Malaysian Borneo). Sarawak Museum J. 18, 377–398.Google Scholar