Written notice of any such hearing called to consider a marketing order, the amendment, suspension or termination of a marketing order shall be given. It shall be mailed to every person who, with respect to a particular order, files in the office of the commissioner a written request for such notice. It shall be posted on a public bulletin board maintained by the commissioner in the Department of Agriculture and Markets at Albany, New York, and a copy of such notice shall be published in the New York State Register of the Department of State and in at least two newspapers having general circulation in the area affected by the proposed marketing order as the commissioner may decide. It shall specify which method or methods of approval set forth in subdivision 2 of section 294 of the Agriculture and Markets Law the commissioner is considering using in the event a referendum vote is appropriate, as set forth more fully in section 200.6 of this Part.