From the Indianapolis Business Journal:
The worst drought in decades doesn't appear to be affecting Indiana's farmland values.
Purdue University says its June survey shows a statewide increase in farmland value ranging from 14 percent to 18 percent, depending on land quality, since last year's survey
Purdue says cash rents have increased about 13 percent to 15 percent.
It says the average value of bare cropland ranges from $5,000 per acre for poor-quality land to $7,700 per acre for top-quality land.
Purdue Extension agricultural economist Craig Dobbins cites "robust" net farm incomes, favorable interest rates, strong demand and a limited supply of farmland for sale for the increases.
http://www.ibj.com/purdue-says-farmland-values-are-up-despite-drought/PARAMS/article/36630
But See Department of Local Government Finance:
http://www.in.gov/dlgf/files/111230_-_Certification_Letter_-_2012_Agricultural_Land_Base_Rate.pdf