Handbook of Plant Virus Diseases presents basic information about viral-caused and viral-like diseases in many cultivated crops. It provides authoritative descriptive symptomatic signatures of virus diseases to aid in the diagnosis and possible control of viruses. It organizes cultivated plants into groups according to their final destinations and uses after harvest – a useful grouping system that indicates that some diseases, their resultant epidemiology, and control measures are characteristic within different groups. It summarizes current knowledge about various virus-induced diseases in many economically important cultivated crops and addresses the need for an improved acronym system by presenting a new system that provides