During each marketing season, and not later than April first, the commissioner shall estimate a budget necessary for the administration and enforcement of this program and for carrying on duly authorized programs and activities, including research, advertising, promotion and publicity, marketing and informational services as herein provided, with the following limitations: The amount of budgeted costs for advertising, promotion and publicity shall not exceed 10 percent of the total budget. The amount of budgeted costs to provide informational services shall not exceed 10 percent. The amount of budgeted administrative costs shall not exceed five percent. The rate of assessment shall not exceed $4 per acre of planted onions in production.