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Effect of Post-Treatment Temperature on the Insecticidal Activity of Neem, Azadirachta Indica A. Juss. Seed extract on Schistocerca Gregaria (Forskal): A preliminary Report

  • J. M. Kabaru (a1) and R. W. Mwangi (a2)

Abstract

The influence of post-treatment temperature on the insecticidal activity of Azadirachta indica (A. Juss) seed extract against the desert locust, Schistocerca gregaria (Forskål) is reported. In tests on adults, the toxicity of crude A. indica seed extract increased by about 10-fold when the post-treatment temperature was raised from 22°C to 40°C. This temperature-dependent toxicity was observed in insects treated either topically or via injection. This phenomenon could partly explain the wide variability in efficacy of neem extracts reported by different investigators.

L'article expose l'influence des températures après traitement, sur l'activité insecticide des extraits de graines du nime, Azadirachta indica (A. Juss), utilisés dans la lutte contre le criquet du désert, Schistocerca gregaria Forskål. Au cours des essais sur les adultes, les extraits bruts obtenus des graines de A. indica ont accru leur activité par 10 fois, quand la température après traitement passait de 20°C à 40°C. Cette interdépendence de la toxicité et la température fut observée chez les insectes traités par application externe ou par injection. Ce phénomène pourrait expliquer en partie, la grande variabilité d'efficacité des extraits de nime rapportée par plusieurs chercheurs.

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Harris, C. R. and Kinoshita, G. B. (1977) Influence of post-treatment temperature on the toxicity of pyrethroid insecticides. J. Econ. Entomol. 70, 215218.
Hunter-Jones, P. (1966) Rearing and Breeding Locusts in the Laboratory. Publ. Antilocust Research Centre, London. 12 pp.
Isman, M. B. (1997) Neem insecticides. Pesticide Outlook 8, 3238.
Kabaru, J. M. (1996) A toxicological study of Melia volkensii (Gurke) fruit extracts on Locusta migratoria migratoriodes (R&F). Ph D Thesis, University of Nairobi, Kenya.
Mwangi, R. W., Kabaru, J. M. and Rembold, H. (1997) Potential for Melia volkensii fruit extracts in the control of locusts, pp. 193200. In New Strategies in Locust Control (Edited by Krall, S. et al.). Publ. Birkhauser, Basel/Switzerland.
Narahashi, T. and Chambers, J. E. (1989) Insecticide Action: From Molecule to Organism. Plenum Press, New York. 275 pp.
O'Brien, R. D. (1967) Insecticide Action and Metabolism. Academic Press, New York, London.
Parmar, B. S. (1995) Results with commercial neem formulations in India, pp. 453–470. In The Neem Tree, Azadirachta indica A. Juss. and other Meliaceous plants: Source of Unique Natural Products for Integrated Pest Management, Medicine, Industry and Other Purposes. VCH Publishers, Weinheim, Germany.
Puhlmann, I. H. (1994) Zur Struktur-Wirkungs-Beziehung der Azadirachtine. PhD Thesis, Ludwig-Maximilians University, Munich, Germany.
Schmutterer, H. (Ed.) (1995) The Neem Tree, Azadirachta indica A. Juss. and other Meliaceous Plants: Source of Unique Natural Products for Integrated Pest Management, Medicine, Industry and Other Purposes. VCH Publishers Weinheim, Germany. 696 pp.
Zar, J. H. (1984) Biostatistical Analysis. 2nd Edition. Publ. Prentice-Hall International, London. 718 pp.

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Effect of Post-Treatment Temperature on the Insecticidal Activity of Neem, Azadirachta Indica A. Juss. Seed extract on Schistocerca Gregaria (Forskal): A preliminary Report

  • J. M. Kabaru (a1) and R. W. Mwangi (a2)

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