559.016.  Terms of probation — extension. — 1.  Unless terminated as provided in section 559.036 or modified under section 217.703, the terms during which each probation shall remain conditional and be subject to revocation are:

  (1)  A term of years not less than one year and not to exceed five years for a felony;

  (2)  A term not less than six months and not to exceed two years for a misdemeanor;

  (3)  A term not less than six months and not to exceed one year for an infraction.

  2.  The court shall designate a specific term of probation at the time of sentencing or at the time of suspension of imposition of sentence.  Such term may be modified by the division of probation and parole under section 217.703.

  3.  The court may extend a period of probation, however, no more than one extension of any probation may be ordered except that the court may extend the total time on probation by one additional year by order of the court if the defendant admits he or she has violated the conditions of his or her probation or is found by the court to have violated the conditions of his or her probation.  Total time on any probation term, including any extension, shall not exceed the maximum term as established in subsection 1 of this section plus one additional year if the defendant admits or the court finds that the defendant has violated the conditions of his or her probation.