To the extent that the sources of revenue described above are insufficient to provide for the payment of the debts of the corporation, the principal of, premium, if any, and interest on the corporation's securities may be secured by a pledge of so much as is necessary of the fees, permit fees, license fees, fines and penalties imposed, charged and collected by the Department of Agriculture and Industries and paid into the Agricultural Fund. There is hereby appropriated and set aside in each fiscal year, solely out of the fees, permit fees, license fees, fines and penalties accruing to the Agricultural Fund such amount as, when added to the revenues from operation of the market facility and the coliseum, net of costs of operation, shall be sufficient to pay the principal of, premium, if any, and interest on the corporation's securities coming due in said fiscal year. Moneys in the Agricultural Fund which consist of contributions by the federal government or any private agency, appropriations by the Legislature from the General Fund, assessments collected for the promotion of agricultural industries and products as provided in Chapter 8 of Title 2, or any other funds other than funds realized from fees, permits, licenses, fines and penalties, shall not be used or pledged for payment of debt service on the corporation's securities.
Ala. Code § 2-6-76 (1975)