3(1)In the occupancy condition " commercial unit of agricultural land" means a unit of agricultural land which is capable, when farmed under competent management, of producing a net annual income of an amount not less than the aggregate of the average annual earnings of two full-time, male agricultural workers aged twenty or over.
(2)In so far as any units of production for the time being prescribed by an order under paragraph 4 below are relevant to the assessment of the productive capacity of a unit of agricultural land when farmed as aforesaid, the net annual income which that unit is capable of producing for the purposes of this paragraph shall be ascertained by reference to the provisions of that order.