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

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

(c) The Secretary shall terminate the provisions of this subpart at the end of any crop year whenever the Secretary finds that such termination is favored by a majority of producers who, during a representative period determined by the Secretary, have been engaged in the area in the production of olives for market as packaged olives: Provided, That such majority have during such representative period produced for market more than 50 percent of the volume of such olives produced for market, but such termination shall be effective only if announced on or before July 15 of the then current crop year.