At the close of the referendum period established, the director shall tabulate the ballots filed during said period. If at least 40 percent of the total number of producers, as established by the director as marketing 40 percent of the total volume marketed by all producers on the list established pursuant to Sections 65559 to 65562, inclusive, during the last completed marketing season, participate in the referendum and the director finds either:
(a)
Sixty-five percent or more of the producers who voted in the referendum voted in favor of such suspension, and the producers so voting marketed 51 percent or more of the total quantity of table grapes marketed in the preceding marketing season by all of the producers who voted in the referendum; or
(b)
That 51 percent or more of the producers who voted in the referendum voted in favor of such suspension, and that the producers so voting marketed 65 percent or more of the total quantity of table grapes marketed in the preceding season by all of the producers who voted in the referendum;
the director shall declare the operation of the provisions of this chapter and of the commission suspended, effective upon expiration of the marketing season then current.