Dr Emerson Nafziger, Professor Emeritus University of Illinois, recently updated the Illinois nitrogen response date by adding data from the 2018 field trials. This data has been incorporated into the MRTN website http://cnrc.agron.iastate.edu/ and also into the downloadable cell phone apps.

Android: https://web.extension.illinois.edu/registration/?RegistrationID=7104

Apple: In the App Store