Accurate Estimation of Leaf Nitrogen Content in Broomcorn Millet Using Deep Learning, RGB Imagery, and Multi-Source Data Fusion
Nitrogen is a major determinant of crop growth, yield formation, and grain quality, making precise nitrogen (N) management essential for sustainable production. This study integrated field canopy spectra acquired with an ASD FieldSpec 4 spectrometer and unmanned aerial vehicle (UAV)-based RGB imagery to estimate leaf n...