[Interaction between Pyrenochaeta Lycopersici (Schneider et Gerlach) cucumber mosaic virus (CMV) on tomato plants. 2. Contribution [Italy]]

cucumber mosaic cucumovirus cucumovirus del mosaico del pepino cultivation damage danno disease surveys encuestas sanitarias field experimentation indagini sulle malattie infestation infestazione italia italie italy lycopersicon esculentum plant response pyrenochaeta racine radici respuesta de la planta risposta della pianta roots sinergismo synergie synergism variedades varieties virus del mosaico del cetriolo