6. Notwithstanding section 5, in a territory under a designated agricultural region decree passed under the Act to preserve agricultural land, this act applies only to farm land situated in a reserved area or in an agricultural zone.
However, subject to sections 21 to 24, this act does not apply to the acquisition of an area of farm land which, by virtue of sections 101 to 105 of the Act to preserve agricultural land, may be used for a purpose other than agriculture without the authorization of the commission.