The dataset RGB-Wheat-LTFT-Bonn contains 7361 RGB images of 22 time points 6. Feb. - 12. June 2020 of winter wheat variety 'Boss' from long-term field fertilizer trial at University of Bonn. The images are annotated with crop, variety and fertilizer management, including single-nutrient omission of N, P and K, a treatment without liming, an unfertilized treatment, ctrl and ctrl plus manure, and have been taken for a Deep Learning approach for nutrient deficiency recognition.