Cal. Food & Agric. Code § 58890

A marketing order may contain provisions which relate to the prohibition of unfair trade practices. In addition to the unfair trade practices now prohibited by law, applicable to the processing, distribution, or handling of any commodity within this state, the director may include in any marketing order which is issued provisions that are designed to correct any trade practice which affects the processing, distributing, or handling of any commodity within this state which the director finds, after a hearing upon the marketing order in which all interested persons are given an opportunity to be heard, is unfair and detrimental to the effectuation of the declared purposes of this chapter.