Payment of the charges provided in sections 275.464 to 275.468 shall be made by each commercial producer in this state. Each commercial producer, on or before the thirty-first day of January, shall file with the director of the department of agriculture, on forms prescribed and furnished by the director, a signed written report in duplicate, in such form as is required by the director to enable the director to compute, and assure the accuracy of, the charges due on all grapes and grape juice processed during the preceding year. Payment of the charges in the amount disclosed by the report shall accompany the report.