The maximum amount which may be authorized in any referendum held pursuant to the provisions of this Article during 1989 or thereafter, and the maximum amount which may be assessed, collected or levied for any year after 1988 by the Board of Directors of Tobacco Associates pursuant to the provisions of this Article, is four dollars ($4.00) per acre per year on all flue-cured tobacco acreage in the State, or, under the alternate method for levy of assessment set out in N.C. Gen. Stat. § 106-568.34, one-fifth cent (1/5¢) per pound of the flue-cured tobacco marketed by each farmer. (1979, c. 474, s. 2; 1987, c. 294, s. 13; 1989, c. 349, s. 6.)