Synopsis The book comprises of chapters contributed by eminent experts in their respective fields and deal intensively and extensively with pests and diseases caused by insects, nematodes, fungi, viruses, bacteria, mollicutes and viroids. These chapters present a comprehensive picture of diseases and pests with particular focus on symptoms, transmission, host range, production of diagnostic reagents, detection technology, taxonomy, ecology, epidemiology and effective management practices of the concerned pests or diseases. At the end of each chapter there is an exhaustive bibliography that includes the latest references on important aspects and salient features of biotic stresses of citrus-which enhances the utility of the book. This immensely useful book is designed to update the knowledge of undergraduate and postgraduate students of economic entomology, mycology, nematology and plant protection. It will also provide ample guidance to all persons engaged in National Agriculture Research System (NARS), professors and teachers of agriculture universities as well as progressive farmers, orchardists and plant protection workers.