randy... this is copied out of the reg book.. also it says that agriculture land that is fence does not need to have signs posted.
to be legally posted, land must have signs:
—
posted once each year that state “no trespassing” or similar terms
either:
1) along the boundaries every 1,000 feet or less, or in wooded
areas where boundaries are less clear, at intervals of 500 feet or less; or
2) at the primary corners of each parcel of land and at access roads
and trails at points of entrance to each parcel, except corners only
accessible through agricultural land need not be posted.
—with lettering at least 2 inches high and the signature or the legible
name and telephone number of the owner,occupant,lessee, or authorized
manager. An unauthorized person may not post land with signs
prohibiting outdoor recreation or trespass.
• Notification to stay off private land, authorization to remove a sign
posted to prevent trespass, or legal permission to enter private
land or to take wild animals near occupied buildings or corrals, may only be
given by the owner,occupant,or lessee.