@article{article_1055708, title={Investigating the efficacies of the entomopathogenic nematodes on the last instar larvae of the codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae) under laboratory conditions}, journal={Plant Protection Bulletin}, volume={62}, pages={5–10}, year={2022}, DOI={10.16955/bitkorb.1055708}, author={Erdoğuş, Fatma Dolunay and Özdem, Ayşe and Yağcı, Mürşide and Kepenekçi, İlker}, keywords={biyolojik mücadele, Cydia pomonella, entomopatojen nematodlar, Heterorhabditis, Steinernema}, abstract={Codling moth Cydia pomonella (L.) (Lepidoptera: Tortricidae) is the main pest of apple all over the world. Besides the usage of the broad spectrum insecticides being the main control for the C. pomonella, also there is a potential of the usage of the entomapathogen nematodes(EPN) for the same control. In this study, the efficacies of four entomopathogenic nematode species [Steinernema carpocapsae (Tokat Bakisli05), S. feltiae (Tokat-Emir), Heterorhabditis bacteriophora (TOK20), and H. bacteriophora (11KG)] have been investigated against the last instar of C. pomonella under laboratory conditions (in vitro). Three different EPNs concentrations [250, 500 and 1000 infective juvenile (IJ)/ml-1] of the nematodes and distilled water as a control were used. Dead larvae were counted 48, 72 and 120 h after treatment, and mortality rates were calculated. H. bacteriophora (KG11) isolate was the most effective isolate causing 77.8% larval mortality at the highest concentration (1000 IJs/ml-1) after 120 h. This was followed by S. feltiae (76.4%), S. carpocapsae (69.5%) and H. bacteriophora (Tok 20) (65.3%). The lowest mortality rates (respectively %5.3, 13.5, 2.7 and 10.8) were seen in all nematode species at a concentration of 250 IJs/ml-1. The isolates are found effective on the last instar larvae of C. pomonella but should be supported with detailed field studies.}, number={2}, publisher={TARIM VE ORMAN BAKANLIĞI EĞİTİM VE YAYIN DAİRESİ BAŞKANLIĞI}, organization={Tarımsal Araştırmalar ve Politikalar Genel Müdürlüğü, Vefa Tarım A.Ş.}