M.Sc. Tezi Görüntüleme

      Cydia pomonella L. ( Lepidoptera, Tortricidae) and Yponomeuta malinellus Zell. (Lepidoptera, Yponomeutidae) and are common plant pests in Turkey and all over the world. Up to now, chemical substances have been utilized to control these pests. However, recent concern on the hazardous effects of chemical pesticides in the environment made scientists consider finding more effective and safe control agents.

      As a result, 8 bacteria and one virus from C. pomonella and 6 bacteria from Y. malinellus were isolated. The morphological, physiological and biochemical characteristics of these bacterial isolates were identified. According to determined features, the isolates are placed into the genera of Enterobacter, Micrococcus, Proteus, Streptococcus, Pseudomonas and Bacillus. The identified virus is placed into the family Baculoviridae.

      In addition, the insecticidal effects of bacterial isolates against C. pomonella were found as, 22% for Cp1, 19% for Cp2 , 25% for Cp3, 60% for Cp4, 65% for Cp5, 20% for Cp6, 57% for Cp7 and 17% for Cp8 and against Y. malinellus 70% for Ym1, 67% for Ym2, 56% for Ym3, 28% for Ym4, 32% for Ym5 and 81% for Ym6. The insecticidal effects of various biological agents tested against C. pomonella and Y. malinellus respectively; Bacillus thuringiensis Berliner 50, 65%, B. thuringiensis var. Kurstaki 49, 67%, with toxin isolated from Harry Dumage (HD-1) strain of B. thuringiensis 65, 95%, with toxin isolated from tenebrionis (BTS-1) strain of B. thuringiensis BTS-1 55%, 80 and with Serratia marcescens 92% for only Y. malinellus.

      Keywords: Cydia pomonella, Yponomeuta malinellus, Biological Control, Bacterial Flora, Baculovirus