(a) In exercising the authority given him by subdivision 4 of section 294 of the Agriculture and Markets Law, temporarily to suspend an effective marketing order, the commissioner on his own motion may conduct an investigation, and if he has reason to believe that during any one growing or marketing season regulation by a marketing order is not within the declared legislative purposes and policy, he may call a hearing on notice to consider suspension of the operation of the order.

(b) A petition to suspend an order under subdivision 4 of section 294 may be filed with the commissioner by any person showing a proper interest therein. If the commissioner has reason to believe, after an investigation of his own, that such petition presents a sufficient cause for further consideration, he shall call a hearing on notice to consider suspension of the operation of the order identified in the petition.