Oregon Revised Statutes Agriculture § 569.410

When the statement of expenses is filed, the county clerk shall cause it to be entered upon a lien docket prepared for that purpose. The amount of the charges and expenses when so docketed shall constitute a first lien upon such lands or premises, except as to taxes. If the charges and expenses are not paid and the lien discharged by the owner or occupant of such lands within 90 days from the date the lien is docketed, the county may recover the expenses in an action at law.