Liens prior in dignity to all others accruing thereafter shall exist in favor of the following persons, boards, firms, or corporations upon the following described real estate, under the circumstances hereinafter mentioned:

(1) The Florida Forest Service, the United States Government, or other governmental authority, upon all lands covered in any cooperative or other agreement entered into between the landowner and the Florida Forest Service (which term shall embrace and include agreements with the Florida Forest Service);
(2) The United States Government or other governmental authority, for the prevention and control of woods fires and other forestry work to the extent of the amounts expended by the Florida Forest Service or other governmental authority for and on behalf of the landowner and not paid by the landowner under the terms of said agreement.