735 ILCS 5/9-206
Subject to the provisions of Section 16 of the Landlord and Tenant Act, in order to terminate tenancies from year to year of farm lands, occupied on a crop share, livestock share, cash rent or other rental basis, the notice to quit shall be given in writing not less than 4 months prior to the end of the year of letting. Such notice may not be waived in a verbal lease. The notice to quit may be substantially in the following form:
To A.B.: You are hereby notified that I have elected to terminate your lease of the farm premises now occupied by you, being (here describe the premises) and you are hereby further notified to quit and deliver up possession of the same to me at the end of the lease year, the last day of such year being (here insert the last day of the lease year).
735 ILCS 5/9-206