(a) The Secretary may at any time terminate the provisions of this part by giving at least one day's notice by means of a press release or in any other manner which the Secretary may determine.

(b) The Secretary shall terminate or suspend the operations of any or all of the provisions of this part whenever it is found that such provisions do not tend to effectuate the declared policy of the Act.

(c) The Secretary shall terminate the provisions of this part at the end of any fiscal period whenever it is found that such termination is favored by a majority of producers who, during a representative period, have been engaged in the production of Vidalia onions:

Provided, That such majority has, during such representative period, produced for market more than fifty percent of the volume of such Vidalia onions produced for market, but such termination shall be effective only if announced on or before June 15 of the then current fiscal period.

(d) Within six years of the effective date of this part, the Secretary shall conduct a continuance referendum to ascertain whether continuance of this part is favored by producers. Subsequent referenda to ascertain continuance shall be conducted every six years thereafter.

(e) The provisions of this part shall, in any event, terminate whenever the provisions of the Act authorizing them cease to be in effect.