Bulletin from U of ILL on 3/21/19 suggests verifying your "MRTN" (maximum return to nitrogen) rates. As most know, over-applying results in 0 $ return. Also, using UAN dictates using less lbs N due to N being higher price per lb from UAN.

Here's link to the article. NO Advertising involved.

https://farmdocdaily.illinois.edu/2019/03/the-economic-advisability-of-lowering-2019-nitrogen-application-rates-on-corn.html?utm_source=farmdoc+daily+and+Farm+Policy+News+Updates&utm_campaign=a176257398-FDD_RSS_EMAIL_CAMPAIGN&utm_medium=email&utm_term=0_2caf2f9764-a176257398-173642409