There is no treatment for affected trees.They must be destroyed to avoid transmission to healthy trees.Select budwood and rootstock seed only from viroid-tested trees. Plant trees propagated from viroid-tested mateerial at least 15 m from untested trees to avoid transmission from natural root grafting.Reserve a special set of pruning,injecting and harvesting implements for these viroid-free trees to avoid transmission through sap.Alternatively,disinfect cutting tools thoroughly with a solution of 1.5%sodium hypochlorite before using on viroid-free trees