1.    A public warehouseman may not discriminate:

     a.    In the buying, selling, receiving, and handling of grain or in the charges made or the service rendered to owners of stored grain; b.    In the receiving of grain offered for sale or storage; c.    In regard to the persons offering grain for sale or storage; or

d.    Between points or stations except as the marketing factors or transportation costs or grain quality premiums may warrant.

2.    A public warehouseman is not required to receive for storage any grain that is heating or otherwise out of condition. Storing grain free of charge is prohibited except as prescribed by law. A warehouseman shall post grain prices paid in a conspicuous place in the office or driveway of the warehouseman’s place of business.