The Director may refuse to register a fertilizer or cancel or suspend a fertilizer registration, custom blend, or fertilizer license if:
         (1) the composition of the fertilizer does not
    
warrant the claims made by the registrant;
        (2) the fertilizer does not comply with the
    
provisions of this Act or its rules;
        (3) the labeling or other materials required for
    
registration do not comply with the provisions of this Act or its rules;
        (4) the registrant used fraudulent or deceptive
    
practices to secure registration;
        (5) it is determined that a fertilizer poses a risk
    
of unreasonable adverse effects to man or the environment under the provisions of this Act or its rules; or
        (6) the registrant does not comply with the
    
provisions of this Act or its rules.