(1)  Subject to subregulation (2) , constituents are to be listed on the label, invoice or delivery docket in alphabetical order.

(2)  Where a fertilizer contains one or more of the following constituents, those constituents are to be listed before any other constituents, in the following order:

(a) nitrogen;

(b) phosphorus;

(c) potassium;

(d) sulphur;

(e) calcium;

(f) magnesium.