My knowledge of the situation/lethal yeallowing: (which fyi, is a problem by no means confined to Belize... FL among other place has just as big of a problem with lethal yellowing) is that where as they are varieties of palm that are very resistant to the disease, there are none completely immune to it. Treatment is problematic in that even if you say treat trees on your property, if your neighbor does NOT, your trees are still rather at risk... Also, treating ALREADY infected trees does not "cure" them, rather it can at best put the disease into remission, and prolong the inevitable. Treatment is NOT expensive, contrary to popular belief... best source if info and materials is no doubt found at
http://www.palmtreesaver.com/ ...trees can be treated for what works out to be a couple dollars US$ a year...