(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 in which he may determine.

(b) The Secretary shall terminate or suspend the operation of any and all of the provisions of this part whenever he finds that such provisions do not tend to effectuate the declared policy of the act.

(c) The Secretary shall terminate the provisions of this part whenever it is found that such termination is favored by a majority of growers who, during a representative period, have been engaged in the production of cherries: Provided, that such majority has, during such representative period, produced for market more than 50 percent of the volume of such cherries produced for market.

(d) The Secretary shall conduct a referendum six years after the effective date of this section and every sixth year thereafter, to ascertain whether continuance of this subpart is favored by growers. The Secretary may terminate the provisions of this subpart at the end of any fiscal period in which the Secretary has found that continuance of this subpart is not favored by growers who, during a representative period determined by the Secretary, have been engaged in the production of cherries in the production area.

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