Relating to agriculture; expanding eligibility for farm manure digester loans; authorizing the rural finance authority to establish, adopt rules for and implement a program to finance on farm manure digester systems; specifying borrower direct loans eligibility and loan security requirements and a loan limit; authorizing the RFA to impose application and origination fees, requiring crediting to an account in the special revenue fund, appropriating money in the account to the commissioner of agriculture for loan program administrative expenses; specifying certain loan interest rate requirements (mk)