Özet:

Potato isone of the most grown agricultural products in Bolu province and one of the most important main pests is the potato beetle Leptinotarsa decemlineata Say (Coleoptera: Chrysomelidae). In this study, the natural enemies and overwintering characteristics of the Colorado potato beetle were determined in Bolu province. Chrysoperla carnea Stephens (Neuroptera: Chrysopidae) and Semiadalia undecimnotata Schneider (Coleoptera: Coccinellidae) species were determined as natural enemies of L. decemlineata. No parasitoid species was found in the adult, larva and egg stages of the Colorado potato beetle were cultured in the laboratory. In the overwintering study carried out in the first year of the study, it was determined that the pest entered winter diapause on 11 October 2020, and emerged from winter diapause on 15 May 2021. The potato beetle entered winter diapause, the average pentate air temperature was determined to be 15 °C, and the average pentate relative humidity was 59.32%. In the second year, this pest e entered the winter diapause on 05 October 2021, and emerged from winter diapause on 09 May 2022. In the period, , the average pentate air temperature was determined as 10.26 °C, and the average pentate relative humidity was 75.08%.

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