No person shall designate, display any sign designating, or advertise any business as a "farmers' market," "farmers' auction market," or use words in connection therewith the general import of which would indicate or tend to indicate to the public at large that farm products as defined in R.S. 4:10-1 are dealt with therein, unless such farm products are the principal commodities displayed and offered for sale or sold in the operation of such business.
N.J.S. § 4:10-13.1