Control measures for viruses and viroids on tomato

Tomato plants (Solanum lycopersicum L.) are affected by numerous diseases caused by viruses or viorids. Quarantine or urgency measures have been taken or proposed for the control of the Chrysanthemum stem necrosis virus, Chrysanthemum stunt viroid, Pepino mosaic virus, Potato spindle tuber viroid, Tomato apical stunt viroid, Tomato chlorosis virus, Tomato infectious chlorosis virus, Tomato ringspot virus, Tomato spotted wilt virus and Tomato yellow leaf curl virus, both at the State level and at the European Community of European Plant Protection Organization (EPPO) level. The scientific basis of the qurantine & emergency measures of chosen examples, considering the four stages of plant pest risk assessment (e.g. entry, establishment, spread and economic, environmental and societal impacts), will be questioned and discusssed based on the biological properties of the viral agents considered.