There are numerous concepts associated with creating an effective lease for a farming operation. A good lease can be a useful tool, but a lease that is inadequate can cause uncertainty and create problems. Also, income tax, social security tax, estate and business planning as well as other economic issues are associated with farm leases.
More leasing information, including forms, can be found on Ag Decision Maker (Iowa State Extension): http://www.extension.iastate.edu/agdm/wdleasing.html