Research on the efficacy of three application techniques of entomopathogenic nematodes against Colorado potato beetle [Leptinotarsa decemlineata (Say), (Coleoptera: Chrysomelidae)] under greenhouse conditions

One of the pest organisms reducing potato production is Colorado Potato Beetle [Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomalidae)] (CPB). CPB a polyphagous that damages every-stage potato. Although entomopathogenic nematodes (EPNs) in world have been demonstrated by many laboratories and field/garden studies activity against harmful groups, very few conducted on our country (Türkiye). In scope work intended to be used EPNs [Steinernema feltiae (isolate 09-31) Heterorhabditis bacteriophora 09-43)] with an important plant. The main objective study revealed greenhouse soil applications EPN, which are present stocks expected lasting effect laboratory (to different stages end larval period recent practices soil). There also lot about use aqueous concentrations effects. years, efforts made cadaver instead concentrates. According results study, highest mortality rate was obtained S. (65,23±4,45 ve 77,33±2,59). Other (green limbs applications) seen low level efficacy. trial results, did not exceed 40% lowest H.bacteriophora 37,40±8,88%. case green devices, 30% 29,14±6,09 H.bacteriophora. EPN greenhouse-pot experiments isolate should included within field trials.