412                             LAWS OF MARYLAND                      [CH. 231

(m) Per Cent. The term "per cent" or "percentage" means per-
centage by weight.

(n) Registrant. The term "registrant" means the person who
registers commercial fertilizer under the provisions of this subtitle.

(o)    Guaranteed Analysis. The term "guaranteed analysis" means
the minimum percentage of plant nutrient claimed as follows:

(1)  Total nitrogen (N); available phosphoric acid (P2O5); soluble
potash (K2O).

(2)    For unacidulated mineral phosphatic materials and basic slag,
both total and available phosphoric acid and the degree of fineness.
For bone, tankage, and other organic phosphatic materials, total phos-
phoric acid.

(3)    Additional plant nutrients, when claimed, must be expressed
in elemental form.

(4)    Potential basicity or acidity may be expressed in terms of
calcium carbonate equivalent in multiples of one hundred pounds per
ton.

(p) Label. The term "label" means a display of written, printed
or graphic matter upon or affixed to the container in which a com-
mercial fertilizer is distributed, or on the invoice or delivery slip
with which a commercial fertilizer or custom-mix fertilizer is dis-
tributed.

474.

Registration.

(a)   Commercial Fertilizer to be Registered; Application for Reg-
istration; Copy to be Furnished. Each brand and grade of commercial
fertilizer shall be registered before being distributed in this State.
The application for registration shall be submitted on forms fur-
nished by the State Chemist, and if the State Chemist so requests,
shall also be accompanied by a label or other printed matter describ-
ing the product. Upon approval by the State Chemist a copy of the
registration shall be furnished to the applicant.

(b)    A distributor shall not be required to register any brand and
grade of commercial fertilizer which is already registered under this
subtitle by another person.

(c)   A distributor shall not be required to register a commercial
fertilizer mixed or blended according to a formula furnished by a
consumer; but shall be required to label such fertilizer in the order
and form provided in Section 475 (c) of this subtitle. Any fertilizer
mixed in advance of receipt of the customer's specific order shall be
registered.

(d)   The plant nutrient content of each and every commercial fer-
tilizer must remain uniform for the period of registration; and, in
no case, even at a subsequent registration, shall the percentage of
any guaranteed plant nutrient element be changed in such a manner
that the crop-producing quality of the commercial fertilizer is
lowered.