The trial resulted in a significant difference in yield response to the varied nitrogen rates. A rate of 54 gallons of 28% UAN per acre led to an increase of an average of 5.1 bushels per acre compared to a rate of 37 gallons of 28% UAN per acre. However, the higher rate of nitrogen incurred a relative loss of $28.05 per acre.

"This year is a great opportunity to learn how to become much better managers of our phosphorous dollars," Jon Stevens says. "If we're broadcasting phosphorous, the industry tells us we're getting a 15% return. Can you do better than 15% bang for your buck? Absolutely."

On this episode of the Strip-Till Farmer podcast, brought to you by Yetter, University of Illinois soil scientist Andrew Margenot shares key takeaways from his long-term phosphorous (P) studies.