Mont. Code Ann. § 77-6-107

If there are applications or bids for renting certain land for grazing purposes and also applications or bids for renting the same land for agricultural purposes, an inspection of the land shall be made by the department at the earliest practical opportunity and a determination made, based on its findings, of the highest and best use which can be made of the land or portions thereof. Any lease of the land subsequent to the applications or bids shall be such as to return to the state revenue commensurate with the highest and best use.