(a) The Commissioner may make such rules and regulations governing the conditions under which plants or other products may be produced as will permit such plants or other products to be certified as free or relatively free from plant pests.

(b) Any rules and regulations made by the Commissioner relative to the certification of tomato, cabbage, onion, and all other cruciferous plants shall be published on or before December 15 of the year preceding that in which such plants are to be grown; provided, however, that in case of emergency supplemental rules and regulations may be promulgated and published; and provided, further, that certification of tomato, cabbage, onion, and other cruciferous plants shall not be compulsory on the grower.

(c) All rules and regulations made by the Commissioner within the limits of the authority conferred by this article shall have the full force and effect of law. Printed copies of all acts, rules and regulations, quarantines, and notices of the department which are published under the authority of the Commissioner shall be admitted as sufficient evidence of such acts, rules and regulations, quarantines, or notices in all courts and on all occasions whatsoever, when the correctness of such copies is certified by the Commissioner.