There is established in the rural finance administration fund a Rural Finance Authority revolving loan account that is eligible to receive appropriations and the transfer of loan funds from other programs. All repayments of financial assistance granted from this account, including principal and interest, must be deposited into this account. Interest earned on money in the account accrues to the account, and the money in the account is appropriated to the commissioner of agriculture for purposes of the Rural Finance Authority livestock equipment, methane digester, disaster recovery, value-added agricultural product, agroforestry, agricultural microloan, and farm opportunity loan programs, including costs incurred by the authority to establish and administer the programs.