As an alternate method for the collection of assessments provided for in N.C. Gen. Stat. § 106-564, the duly certified agency representing the producers of peaches, apples or other tree fruits, is hereby authorized to establish the names, addresses and number of trees or acres of trees and certify same to the Commissioner of Agriculture. The Commissioner of Agriculture shall then notify by registered letter such certified producers that on or before the date specified by the duly certified agency, the assessments shall be paid to the Commissioner of Agriculture by the producers. The date of collections of such assessments may be established by the duly certified agency representing the producers of any agricultural product referred to in N.C. Gen. Stat. § 106-550 (1955, c. 374.)