Rental rates for Iowa farmland have risen over the last five years, according to a study from Iowa State University. District 9, which includes Washington, Louisa, Keokuk, Jefferson, Henry, Des Moines, Lee, Van Buren, Wapello and Mahasksa counties, has increased from $173 per acre for corn and soybeans to $229 this year. This year the state average is $270 per acre to rent.
The links below were provided by Iowa State University.
The Cash Rental Rates for Iowa 2013 Survey  is available online as a downloadable document from the Ag Decision Maker website www.extension.iastate.edu/agdm/  and the Extension Online Store athttps://store.extension.iastate.edu/ .
Other resources available for estimating a fair cash rental rate include the Ag Decision Maker information filesComputing a Cropland Cash Rental Rate (C2-20) , Computing a Pasture Rental Rate (C2-23)  and Flexible Farm Lease Agreements (C2-21) . All documents include electronic decision tools to help analyze leasing questions.