, Volume 25, Issue 4, pp 283–289 | Cite as

Systemic effects of a neem insecticide onLiriomyza huidobrensis larvae



In an effort to expand the spectrum of larvicides effective against the pea leafminer,Liriomyza huidobrensis (Blanchard), we studied the effects of a neem-based insecticide (Neemix-45) on the development of the leafminer under laboratory conditions. Bean plants were treated with a soil drench of 1, 5, 10 or 25 ppm azadirachtin or by dipping leaves in 1 or 15 ppm azadirachtin at various times before or during the development of the leafminer. Treating the plants with the neem insecticide before exposure to egg-laying adults had a greater effect on inhibiting the development of pupae and adult eclosion than treatment at the 1st-instar larval stage. The systemic effects from a soil drench had a greater adverse effect on pupation and adult eclosion than leaf dipping. Drenching plants with 1 ppm azadirachtin 24 h before exposure to adults had a greater effect (0% adult eclosion) than leaf dipping at the same time period and concentration (15. 6% adult eclosion). Similar results were obtained when drenching plants infested with lst-instar larvae with 1 ppm azadirachtin (11. 7% eclosion)vs dipping leaves at the same time period and concentration (44. 7% eclosion).

Key words

Liriomyza huidobrensis neem-based insecticide Neemix-45 systemic effects by soil drenching leaf dipping 


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  1. 1.
    Ascher, K. R. S. (1993) Nonconventional insecticidal effects of pesticides available from the neem tree,Azadirachta indica.Arch. Insect Biochem. Physiol. 22:433–449.CrossRefGoogle Scholar
  2. 2.
    Dimetry, N. Z., Barakat, A. A., Abdalla, E. F., El-Metwally, H. E. and El-Salam, A. M. E. A. (1995) Evaluation of two neem seed kernel extracts againstLiriomyza trifolii (Burg) (Dip. Agromyzidae).Anz. Schädlingskd.Pflanzenschutz Umweltschutz 68:39–41.CrossRefGoogle Scholar
  3. 3.
    Isman, M. B., Koul, O., Luczynski, A. and Kaminski, J. (1990) Insecticidal and antifeedant bioactivities of neem oils and their relationship to azadirachtin content.J. Agric. Food Chem. 38:1406–1411.CrossRefGoogle Scholar
  4. 4.
    Larew, H. G., Knodel-Montz, J. J., Webb, R. E. and Warthen, J. D. (1985)Liriomyza trifolii (Burgess) (Diptera: Agromyzidae) control on chrysanthemum by neem seed extract applied to soil.J. Econ. Entomol. 78:80–84.Google Scholar
  5. 5.
    Lowery, D. T. and Isman, M. B. (1995) Toxicity of neem to natural enemies of aphids.Phytoparasitica 23:297–306.Google Scholar
  6. 6.
    Meisner, J., Yathom, S., Tal, S. and Ascher, K. R. S. (1985) The effect of various extracts of neem seed kernel onLiriomyza trifolii (Burgess) (Diptera: Agromyzidae).J. Plant Dis. Prot. 93:146–152.Google Scholar
  7. 7.
    Mordue (Luntz), A. J. and Blackwell, A. (1993) Azadirachtin: an update.J. Insect Physiol. 39:903–924.CrossRefGoogle Scholar
  8. 8.
    Naumann, K. and Isman, M. B. (1996) Toxicity of a neem (Azadirachta indica A. Juss.) insecticide to larval honey bees.Am. Bee J. 36:518–520.Google Scholar
  9. 9.
    Parkman, P. and Pienkowski, R. L. (1990) Sublethal effects of neem seed extract on adults ofLiriomyza trifolii (Diptera: Agromyzidae).J. Econ. Entomol. 83:1246–1249.Google Scholar
  10. 10.
    Parrella, M. P. and Bethke, J. A. (1984) Biological studies ofLiriomyza huidobrensis (Diptera: Agromyzidae) on chrysanthemum, aster, and pea.J. Econ. Entomol. 77:342–345.Google Scholar
  11. 11.
    Schmutterer, H. (1988) Potential of azadirachtin-containing pesticides for integrated pest control in developing and industrialized countries.J. Insect Physiol. 34:713–719.CrossRefGoogle Scholar
  12. 12.
    van der Staay, M. (1992) Chemical control of the larvae of the leafminerLiriomyza huidobrensis (Blanchard) in lettuce.Meded. Fac. Landbouwwet. Rijksuniv. Gent 57:473–478.Google Scholar
  13. 13.
    Webb, R. E., Hinebaugh, M. A., Lindquist, R. K. and Jacobson, M. (1983) Evaluation of aqueous solution of neem seed extract againstLiriomyza sativae andL. trifolii (Diptera: Agromyzidae).J. Econ. Entomol. 76:357–362.Google Scholar
  14. 14.
    Weintraub, P. G. and Horowitz, A. R. (1995) The newest leafminer pest in Israel,Liriomyza huidobrensis.Phytoparasitica 23:177–184.Google Scholar

Copyright information

© Springer Science + Business Media B.V. 1997

Authors and Affiliations

  1. 1.Dept. of EntomologyAROM. P. NegevIsrael

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