A scheme under the Agriculture (Fertilisers) Act 1952 (which provides for the payment of contributions in respect of fertilisers) may be so made as to extend—
(a)to fertilisers used by growers of mushrooms otherwise than on agricultural land ; or
(b)to fertilisers applied to the crop instead of to the soil;
and the references in that Act to occupiers of agricultural land and to the use of fertilisers for adding to such land to improve the fertility of the soil shall be construed accordingly.