(a) The directors may not adopt an ordinance prescribing land-use regulations unless adoption of the ordinance is approved by at least 90 percent of the eligible voters voting in an election under this section. If the voters approve the ordinance by that percentage, the directors shall adopt the ordinance.
(b) The directors shall give notice of the election that either recites the contents of the proposed ordinance or states where copies of the proposed ordinance may be examined. The directors shall make copies of the proposed ordinance available for public inspection during the period between publication of notice and the election.

(c) The ballot for the election shall be printed to provide for voting for or against the proposition: “Approval of the proposed Ordinance No. _________, prescribing land-use regulations for conservation of soil and prevention of erosion.”
(d) The directors shall adopt rules governing the conduct of the election, supervise the election, and announce the result.