A Multimodal RGB and N-Sensor Dataset for Nitrogen Assessment in Winter Wheat

Multimodal dataset from a winter wheat field experiment with ten nitrogen fertilization variants (40 plots total). The dataset includes plot-level NDVI and NDRE measurements from a Yara N-Sensor, UAV-based RGB orthophotos with derived vegetation indices, 1197 raw smartphone RGB images from three devices, and harvest data (yield and grain quality). All data are spatially linked at plot level and support research on RGB-based nitrogen assessment and precision agriculture.