UTILIZATION OF ENTOMOGENOUS NEMATODES FOR CONTROL OF FOREST INSECT PESTS STUDY ON APPLICATION OF ENTOMOPATHOGENIC NEMATODES OF, i>STEINERNEMA BIBIONIS AND S. FELTIAE TO CONTROL ANOPLOPHORA GLABRIPENNIS AND HOLCOCERUS INSULARIS Laboratory Test on Control of Japanese Pine Sawyer by Two Entomopathogenic Nematode Species Virulence and control effect of entomopathogenic nematodes against Agrotis ypsilon (Rottemberg) Occurrence of Entomopathogenic Nematodes in Gansu Province Pathogenicity of Entomopathogenic Nematodes to Grass Grubs (Coleoptera: Scarabaeidae) Molecular cloning and expression analysis of vasa gene in Ovomermis sinensis cDNA cloning and quantitative analysis by real-time RT-PCR of tra-1 gene in Ovomermis sinensis Oral insecticidal activity of culture broths from Xenorhabdus and Photorhabdus to Helicoverpa armigera, Pieris papae