Until recently, winter wheat nitrogen recommendations were based on research conducted 30 years ago. Production practices have changed significantly, with increased yield potential through better genetics (varieties), fungicides, and growth regulators. In the pursuit of higher wheat yields using improved management techniques, N recommendations were found not be sufficient. N recommendations were increased
(2012) based on research which is the precursor to this study (Hooker et al, 2014, Johnson and McClure previous Crop Advances).
This study continues the evaluation of nitrogen recommendations, with a shift in focus to the difference in response between with fungicides applied and without fungicides. A wheat nitrogen calculator is hoped to be developed from this and previous research efforts.