ABSTRACT
Nematodes are cylindrical roundworms that are unsegmented and lack appendages. They can be free-living, predaceous, or parasitic. Many of the parasitic species cause disease to plants, animals and humans. However, other species are beneficial in attacking insect
pests. Among them, entomopathogenic nematodes of the genera Steinernema and Heterorhabditis emerged as excellent candidates for biological control of insect pests.
