The rent of a 'Mundari khunt-kattidari tenancy may be enhanced only,-
(a) by an order of the Deputy Commissioner, and
(b) if it be shown before the Deputy Commissioner that the tenancy was created within a period of twenty years immediately preceding the presentation of the petition for enhancement.
(2) An order of the Deputy Commissioner under sub-section (1) shall not enhance the rent of any such tenancy to an amount which would exceed one-half of the rent which would by payable for the land if it were held by a Raiyat having a right of occupancy therein.
(3) The provisions of Sections 28 to 30 shall be applicable to proceedings or the enhancement of the rent of a 'Mundari-khunt-katfidari tenancy.