(a) The Secretary may at any time terminate this part.

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

(c) The Secretary shall terminate the provisions of this part applicable to pecans for market or pecans for handling at the end of any fiscal year whenever the Secretary finds, by referendum or otherwise, that such termination is favored by a majority of growers; Provided, That such majority of growers has produced more than 50 percent of the volume of pecans in the production area during such fiscal year. Such termination shall be effective only if announced on or before the last day of the then current fiscal year.

(d) The Secretary shall conduct a referendum within every five-year period beginning from the implementation of this part, to ascertain whether continuance of the provisions of this part applicable to pecans are favored by two-thirds by number or volume of growers voting in the referendum. The Secretary may terminate the provisions of this part at the end of any fiscal year in which the Secretary has found that continuance of this part is not favored by growers who, during an appropriate period of time determined by the Secretary, have been engaged in the production of pecans in the production area: Provided, That termination of this part shall be effective only if announced on or before the last day of the then current fiscal year.

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