In order to promote efficient and economical methods of marketing farm products, the Department of Agriculture, under the direction of the Secretary of Agriculture, may, after investigation and public hearing, from time to time, as far as practicable, establish and promulgate standards for the grade and other classification of farm products, and, in co-operation with the Department of Internal Affairs, may establish and promulgate standards for receptacles for farm products, by which their quality, value, or quantity, may be determined; and may make regulations governing the marks, brands, and labels, which may be required upon receptacles for farm products, for the purpose of showing the name and address of the producer or packer or distributor, the quantity, nature, and quality of the product, or any of them, and for the purpose of preventing deception with reference thereto. The provisions of this paragraph shall not apply to canned farm products.

Any standard for any farm product, or any standard for any receptacle for farm products, or any requirement for marking receptacles for farm products, now or hereafter made mandatory under authority of the Congress of the United States, shall forthwith, as far as applicable, be established or prescribed and promulgated by the Department as the official standard or requirement in this Commonwealth.

No standard established, or requirement for marking prescribed, under this section, shall become effective until the expiration of not less than three months after it shall have been promulgated.