There are 18 well-written chapters on botanical information about peaches, nectarines, and apricots, various insects and pests, and diseases like bacterial, nematodes, viral and viroid causing great damage to apple crop. Besides these, detailed accounts on phytoplasmal and spiroplasmal diseases have been discussed. Miscellaneous diseases and disorders of peaches, nectarines, and apricots were accounted for in this volume. We hope this book will be of value and interest to many teachers, students, agricultural scientists, and researchers as a comprehensive, accurate, and easily readable reference book on plant diseases. We shall deem it an honor and reward if readers find this book useful to them.