[An outbreak of sharka on peach tree in Verona province [Prunus persica Stokes- viroses - Veneto]]

aetiology agricultural warning services avertissement agricole control cultural control de enfermedades controllo colturale controllo delle malattie cultural control diagnosi di laboratorio diagnostic de laboratoire disease control disease surveys elisa encuestas sanitarias enfermedades de las plantas epidemiologia epidemiologie epidemiology etiologia etiologie extension extension activities eziologia indagini sulle malattie infection infezione laboratory diagnosis legislation legislazione losses lutte culturale maladie des plantes malattie delle piante monitoraggio monitoring pepiniere perdite perte plant diseases plant nurseries plum pox potyvirus poda potatura potyvirus sharka del ciruelo potyvirus sharka du prunier pruning prunus persica servizi di allarme agricoli sintomi symptome symptoms taille test elisa veneto vigilancia virose viroses virosi virosis virus sharka del susino viveros vulgarisation