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LABORATORY AND FIELD EVALUATION OF A NEEM INSECTICIDE AGAINST ARCHIPS ROSANUS L. (LEPIDOPTERA: TORTRICIDAE)

Published online by Cambridge University Press:  31 May 2012

M.T. AliNiazee
Affiliation:
Department of Entomology, Oregon State University, Corvallis, Oregon, USA 97331-2907
Amin Alhumeyri
Affiliation:
Department of Entomology, Oregon State University, Corvallis, Oregon, USA 97331-2907
M. Saeed
Affiliation:
Department of Entomology, Oregon State University, Corvallis, Oregon, USA 97331-2907

Abstract

A commercial formulation of neem seed extract, Margosan-O, containing 0.3% AI azadirachtin, was tested under laboratory and field conditions against the European leafroller, Archips rosanus L. In laboratory tests, a 1% aqueous solution of neem insecticide produced 100% larval mortality within 48 h of treatment. At lower concentrations of 0.1 and 0.01%, 48-h mortality rates were reduced. Prolonged deleterious effects of sublethal treatments of neem were observed even at the lowest concentration (0.001%) tested. Mortality in the 0.1 and 0.01% treatments group reached 100% within 32–39 days after treatment. Field data showed that 3 weeks after application, 1% Margosan-O was as effective as the organophosphate insecticide diazinon and significantly more effective than the microbial insecticide Dipel (Bacillus thuringiensis). Larvae exposed to higher concentrations of neem died within 48 h after feeding on treated foliage. At lower rates, feeding deterrence (including cessation of feeding) and growth regulatory effects (e.g. difficulty in molting, abnormal larval growth, and formation of malformed pupae and adults) were recorded.

Résumé

L’efficacité d’une préparation commerciale d’un extrait de la graine du margousier, le Margosan-O, qui contient 0,3% AI d’azadirachtine, a été éprouvée en laboratoire et sur le terrain dans la lutte contre la Tordeuse européenne Archips rosanus L. En laboratoire, une solution aqueuse 1% de l’insecticide causait la mort de 100% des larves en moins de 48 h. À des concentrations plus faibles, 0,1 et 0,01%, les taux de mortalité après 48 h étaient moins élevés. Des effets toxiques prolongés de traitements sublétaux ont été observés même aux concentrations les plus faibles utilisées (0,001%). Chez les groupes traités aux concentrations de 0,1 et 0,01%, la mortalité atteignait 100% en 32–39 jours. Les données sur le terrain ont révélé que, 3 semaines après l’application, le Margosan-O 1% était aussi efficace que l’insecticide organophosphaté diazinon et significativement plus efficace que l’insecticide microbien Dipel (Bacillus thuringiensis). Les larves exposées à des concentrations plus fortes de l’insecticide sont mortes moins de 48 h après consommation de feuillage traité. Aux concentrations plus faibles, l’insecticide avait des effets négatifs sur l’alimentation (jusqu’à l’arrêt complet) et la croissance (e.g. difficulté de muer, croissance larvaire anormale, production de crysalides et d’adultes anormaux).

[Traduit par la Rédaction]

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1997

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References

Abbott, W.A. 1925. A method of computing the effectiveness of an insecticide. Journal of Economic Entomology 18: 265267.CrossRefGoogle Scholar
AliNiazee, M.T. 1974. Evaluation of Bacillus thuringiensis against Archips rosanus (Lepidoptera: Tortricidae). The Canadian Entomologist 106: 393398.CrossRefGoogle Scholar
AliNiazee, M.T. 1977. Bionomics and life history of a filbert leafroller, Archips rosanus (Lepidoptera: Tortricidae). Annals of the Entomological Society of America 70: 391401.CrossRefGoogle Scholar
AliNiazee, M.T. 1980. Insect and Mite Pests of Filberts. Oregon Agriculture Experiment Station Bulletin 643: 13 pp.Google Scholar
AliNiazee, M.T. 1983. Pest status of filbert insects in Oregon orchards. A ten year study. The Canadian Entomologist 115: 11551162.CrossRefGoogle Scholar
Baggiolini, M. 1956. Contribution à l'etude d'une lutte rationnelle contre la tordeuse Cacoecia rosana L. Review Romande, Agriculture, Viticulture, Arboriculture 12: 2124.Google Scholar
Blommers, L.H. 1994. Integrated pest management in European apple orchards. Annual Reviews of Entomology 39: 213241.CrossRefGoogle Scholar
Jilani, G., Saxena, R.C., and Rueda, B.P.. 1988. Repellent and growth-inhibiting effects of turmeric oil, sweetflag oil, neem oil and Margosan-O on red flour beetle (Coleoptera: Tenebrionidae). Journal of Economic Entomology 81: 12261230.CrossRefGoogle Scholar
Ladd, T.L. Jr., Jacobson, M., and Buriff, C.R.. 1978. Japanese beetles: Extracts from neem tree seeds as feeding deterrents. Journal of Economic Entomology 71: 810813.CrossRefGoogle Scholar
Larew, H.G. 1988. Limited occurrence of foliar, root and seed applied neem seed extract toxin in untreated plant parts. Journal of Economic Entomology 81: 593598.CrossRefGoogle Scholar
Larew, H.G., Knodel-Montz, J.J., Webb, R.E., and Warthen, J.D. Jr., 1985. Liriomyza trifolii (Diptera: Agromyzidae) control on Chrysanthemum by neem seed extract applied to soil. Journal of Economic Entomology 78: 8084.CrossRefGoogle Scholar
Lowery, D.I., Isman, M.B., and Brard, N.L.. 1993. Laboratory and field evaluation of neem for the control of aphids (Homoptera: Aphididae). Journal of Economic Entomology 86: 867870.CrossRefGoogle Scholar
Mayer, D.F., and Beirne, B.P.. 1974. Aspects of the ecology of apple leafrollers (Lepidoptera: Tortricidae) in the Okanagan Valley, British Columbia. The Canadian Entomologist 106: 349352.CrossRefGoogle Scholar
Naumann, K., Currie, R.W., and Isman, M.B.. 1994. Evaluation of the repellent effects of a neem insecticide on foraging honey bees and other pollinators. The Canadian Entomologist 126: 225230.CrossRefGoogle Scholar
Prabhaker, N., Coudriet, D.L., Kishaba, A.N., and Meyerdirk, D.E.. 1986. Laboratory evaluation of neem-seed extract against larvae of the cabbage looper and beet armyworm (Lepidoptera: Noctuidae). Journal of Economic Entomology 79: 3941.CrossRefGoogle Scholar
Saxena, R.C., and Khan, Z.R.. 1985. Effect of neem oil on survival of Nilaparuvata lugens (Homoptera: Delphacidae) and on grassy stunt and ragged stunt virus transmission. Journal of Economic Entomology 78: 647651.CrossRefGoogle Scholar
Schmutterer, H. 1990. Properties and potential of natural pesticides from the neem tree, Azadirachta indica. Annual Reviews of Entomology 35: 271279.CrossRefGoogle ScholarPubMed
Stark, J.D., Vargas, R.I., and Thalman, R.K.. 1990. Azadirachtin: Effect on metamorphosis, longevity, and reproduction of three tephritid fruit fly species (Diptera: Tephritidae). Journal of Economic Entomology 83: 21682174.CrossRefGoogle Scholar
Zehnder, G., and Warthen, J.D. Jr., 1988. Feeding inhibition and mortality effects of neem-seed extract on the Colorado potato beetle (Coleoptera: Chrysomelidae). Journal of Economic Entomology 81: 10401044.CrossRefGoogle Scholar