NITROGEN USE EFFICIENCY IN WISCONSIN

2018

  • Matt Ruark
  • Abby Augarten
  • Todd Prill
  • Aaron Pape
  • Eric Cooley
  • Kevan Klingberg
  • Amber Radatz
  • University of Wisconsin-Madison and University of Wisconsin-Extension
Project Media

Calculating nitrogen use efficiency (NUE) on a field-by-field basis can be a valuable
tool for assessing N management on a farm. There are four key ways to evaluate
nitrogen: Partial Factor Productivity (PFP), Agronomic Efficiency (AE), Partial
Nutrient Balance (PNB), and Recovery (or Uptake) Efficiency (RE). Table 1 provides
calculations and interpretations.