How to use it on grains:
The use of the N-pilot is based on a comparison between an over-fertilized zone and the rest of the field. The creation of a reference zone is therefore essential for the use of the N-Pilot because this is a calibration step.
The calibration zone of the N-Pilot is in the same field as the one to be checked: this makes it possible to calibrate the tool to "all other parameters" (varieties, previous crop, type of soil, sowing condition, plant health protection, etc.). The only difference lies in the nitrogen status: in the reference zone the nitrogen is not a limiting factor.
Each measurement is expressed as a percentage of the index obtained on the reference zone (zone representative of the field where the nitrogen is not limiting). The decision to readjust the nitrogen dose is made without delay.
Link to dedicated fertilization recommendations