771.5—Loan purposes.
        
        (a) 
         Loan funds may be used for any purpose directly related to boll weevil eradication activities, including, but not limited to:
    
    
    
    
    
        
        (b) 
         Loan funds may not be used to pay expenses incurred for lobbying, public relations, or related activities, or to pay interest on loans from the Agency.