This book aims to document and illustrate the major developments in the use of nematodes for biological control of insects and slugs. It has three major sections covering entomapathogenic nematodes, entomophilic nematodes, and slug-parasitic nematodes. Each of these sections discusses biology, commercial production, formulation and quality control, application technology, strategy and safety. Separate chapters are devoted to the appliction of nematodes in different cropping systems, and the efficiency of nematodes against specific pests. Potential of predatory nemotodes to control plant-parasitic nematodes and mycophagous nematodes to control fungal pathogens is also reviewed. This book was first published as a hardback in 2005.