(6)Where the right, title and interest of the landowner or the intermediaries in respect of a holding or part of a holding vested in the Government form part of the security' for any encumbrance or charge for maintenance or alimony, the Land Tribunal shall, for the purpose of determining the value of the encumbrance or the claim for the maintenance alimony relating to that holding or part, as the case may be, apportion the entire encumbrance or the charge for the maintenance or alimony between such holding Or part and the remaining lands which form the security for the encumbrance or the charge for the maintenance or alimony, in proportion to the values of the two portions.