The book Plant Protection, Diversity and Conservation is a critical and comprehensive compilation of 52 chapters on various aspects of Plant Protection especially on insect pest, disease, nematode and weed, diversity, prevalence and conservation of beneficial insects, bioagents, parasites, parasitoids and predators and entopathogenic nematodes that control harmful insects. Some important topics which have been included in the book are : Allelopathy of Parthenium, Natural enemies of Aproaerema modicella, Application of Nanotechnology in plant protection, Pulse nematode management, EPN as bioinsecticides, PGR in Nematodes, Chemical hazards and nematodes, Bacterial antagonists, Nematode Fusarium complex. Novel nematicides, Eco-friendly management of rodent, Bacterial and fungal diseases of tomato, Rice rootknot nematode, Microbial metabolites, Impact of environmental pollution on crop production, Control of exotic weeds of Canada, Environmental pollution.