Abstract
This chapter covers the economic importance, geographical distribution, symptoms, causal agents, diagnosis, epidemiology and management (such as through the production of virus-free planting materials and quarantine) of the following diseases/pathogens of peach: Sharka or plum pox (caused by Plum pox virus), Ilarviruses, Tomato ringspot virus, Strawberry latent ringspot virus, Peach rosette mosaic virus, peach latent mosaic (induced by Peach latent mosaic viroid), peach dapple (caused by Hop stunt viroid), peach mosaic (caused by Peach mosaic virus or Peach latent mosaic viroid), and diseases of unknown aetiology and experimental infections in peach (Apricot latent virus, Peach sooty ringspot virus, Peach asteroid spot virus and Apple chlorotic leaf spot virus).