Efficacy of some native entomopathogenic nematodes against the alfalfa weevil, Hypera postica (Gyllenhal) (Coleoptera: Curculionidae), and the lucerne beetle, Gonioctena fornicata (Brüggemann) (Coleoptera: Chrysomelidae), adults under laboratory conditions

Abstract Background Entomopathogenic nematodes (EPNs) have more important role in biological control of economic insect pests. The effect native EPNs on adults the lucerne beetle, Gonioctena fornicata (Brüggemann, 1873) (Coleoptera: Chrysomelidae), and alfalfa weevil, Hypera postica (Gyllenhal, 1813) Curculionidae), which are pests Turkey around world, was investigated. Results Dose-mortality assays were carried out with 5 isolates [ Steinernema carpocapsae (Weiser, 1955) (Nematoda: Steinernematidae) (Black sea isolate), S . feltiae Filipjev, 1934 (isolate 09-31), Heterorhabditis bacteriophora Poinar, 1976 Heterorhabditidae) 09-43), H Tokat-Songut, Tokat-Ulas] using doses 500, 1000, 2000 IJs ml −1 under laboratory conditions. Studies showed that all had an 90% at end 112 h [except, 09-43) Tokat-Songut against ]. In addition, LT 30 , 50 90 values 1000 determined. Conclusions According to results, G susceptible tested study Tokat-Ulas. This is first conducted for virulence