Tractor based spectral reflectance measurements using an oligo view optic to detect biomass, nitrogen content and nitrogen uptake of wheat and maize and the nitrogen nutrition index of wheat

Fields with spatial differences in soil conditions require a variable, locally adjusted nitrogen fertiliser application during the growing season. Spectral measurements can be used to detect canopy N status. The present study investigated the potential of a tractor-based field spectrometer with an oligo-view optical setup to detect biomass, N content, N uptake and the nitrogen nutrition index in winter wheat and maize in a three-years´ field...