Fertilizer prices have been increasing in recent months; however, per acre fertilizer costs should be lower in 2014 than in recent years. These are monthly prices for anhydrous ammonia, diammonium phosphate (DAP), and potash are shown for 2009 through 2014. In most cases, monthly fertilizer prices in 2014 have been below prices for the 2011, 2012, and 2013 crop years. Prices suggest fertilizer costs for corn of $150 per acre in 2014, compared to costs near $200 per acre in 2012 and 2013.

The Agricultural Marketing Service (AMS), an agency of the USDA, reports average fertilizer prices for Illinois every other week. These bi-weekly prices were averaged to determine monthly fertilizer prices.