Upon recommendation of the advisory board which is concerned, the director may, without prior notice to, and public hearing for, the producers or handlers of the commodity which is directly affected, issue and make effective seasonal marketing regulations or modifications of such regulations if all of the following requirements are complied with:
(a) The marketing order, or agreement concerned provides for the issuance or modification of such seasonal marketing regulations without requiring such prior notice and public hearing and sets forth the limits within which such seasonal marketing regulations may be made effective or subsequently modified by the director.
(b) The director finds that such seasonal marketing regulations or modifications of them are reasonable and proper and a practical means of carrying out the marketing provisions which are authorized in such marketing order or agreement and will tend to effectuate the declared purposes and policies of the chapter with respect to such commodity.