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, Volume 72, Issue 5, pp 129–132 | Cite as

Application of some bacterial varieties ofBacillus thuringiensis and its bioproduct Delfin onSynanthedon myopaeformis Borkh. (Lep. Aegeriidae) in apple orchards

  • W. A. Shehata
  • Feeby N. Nasr
  • A. W. Tadros


Field experiments were conducted using the biological agentBacillus thuringiensis to control the clearwing moth,Synanthedon myopaeformis (Lep. Aegeriidae) in apple orchards at Alexandria governorate during 1995, 1996 and 1997. Three bacterial varieties ofB. thuringiensis showed significant influence on the reduction of borer infestation. Four applications with the sporic concentration 12×107 spores/ml of each ofB. th. var.kurstaki, B. th. var.alesti andB. th. var.thuringiensis induced 82.5, 51.1 and 42.1% reduction of infestation, respectively. Methods of application showed highly significant effect on infestation level. Sparying after scraping was the best method (80.0%, reduction) followed by painting after scraping (71.5%, reduction) then spraying alone (59.7%, reduction) or painting alone (43.0%, reduction). A control programme was carried out using three applications of the biomaterial, Delfin at the rate of 200 g/100 I.w. during mid-March, early June and mid-August resulted in 88.5–91.4% reduction of infestation.


Bacterial Variety Bacillus Thuringiensis Apple Tree Apple Orchard Infestation Level 
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  1. Campbell, R. W.;Rodgwaite, J. D., 1971: The disease of the gypsy moth. I. Major components. J. Invert. Pathol.18, 1–7.CrossRefGoogle Scholar
  2. Deseoe-Kovacs, K. V., 1987: Situation and possibilities of biological control in Italy. Schr.Reihe Bundesmin. Ernaehr., Landw. Forsten. Reihe, A (Germany, F. R.), 1987, V. 344 p., 211–225.Google Scholar
  3. Kahounova, L.;Mracek, Z., 1991: Larval mortality ofSynanthedon myopaeformis (Lepidoptera, Sesiidae) in apple trees sprayed withSteinernema strainHylobius (Nematoda, Steinernematidae). Acta Ent. Bohemosl. (CSFR).88, 3–4, 205–210.Google Scholar
  4. Kiraly, Z.;Klement, Z.;Solymosy, F.;Voros, J., 1970: Methods in plant pathology with special reference to breeding for disease resistance. Akademiai Kiado, Budapest.Google Scholar
  5. Mortignoni, M. E.; Steinhaus, E. A., 1961: Laboratory exercises in insect microbiology and insect pathology. Burgees Publ. Comp.Google Scholar
  6. Nachtigall, G.;Dickler, E., 1992: Experiences with field applications of entomoparasitic nematodes for biological control of cryptic living insects in orchards. Actaphytopath. et Entom. Hungarica.27, 1–4, 485–490.Google Scholar
  7. Ozkan, A.;Ciftci, K.;Alp, I., 1984: Investigations on the population dynamics and establishment of natural enemies of apple clearwing (Synanthedon myopaeformis Borkh. Lep.: Aegeriidae) damaging apple trees in the province of Anatolia. Bitki, Koruma, Bulteni24 (4), 213–220.Google Scholar
  8. Shehata, W. A.;Hanna, M. T.;Nasr, F. N.;Tadros, A. W., 1995: Microbiological control ofZeuzera pyrina L., (Lep.: Cossidae) in pear orchards. Mansoura Univ. J. of Agric. Sc.20 (5), 2545–2555.Google Scholar
  9. Shehata, W. A., 1995: Studies on some ecological aspects ofSynanthedon myopaeformis, Borkh., in apple orchards. Commun. Sci. & Develop. Res.,51 (767), 1–15.Google Scholar
  10. Snedecor, G. W.; Cochran, W. G., 1961: Statistical methods. Fifth edition, Ames. Iowa, U. S. A.Google Scholar
  11. Sontgen, J. M.;Sengonca, C., 1988: Observations on the incidence of parasitoids of the apple clearwing moth,Synanthedon myopaeformis (Borkh.), in Nordrhein. Mitt. Dtsch. Ges. Allg. Ang. Entom.6, 1–3, 262–266.Google Scholar
  12. Tadros, A. W., 1977: Biological and ecological studies on the clearwing moth,Synanthedon myopaeformis, Borkh., and its control. Mr. Sci. of Thesis, 1977, Fac. of Agric., Cairo Univ.Google Scholar

Copyright information

© Blackwell Wissenschafts-Verlag 1999

Authors and Affiliations

  • W. A. Shehata
    • 1
  • Feeby N. Nasr
    • 1
  • A. W. Tadros
    • 1
  1. 1.Plant Protection Research InstituteARC, MOAGizaEgypt

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