Nitrogen deficiency in maize: annotated image classification dataset

1200 images were collected in the field in July 2023, in a 5-day window around flowering time of different genotypes. There were three N fertilization levels: N0, N69 and NFull, with no added N, 69 kg of added N and full fertilization with 136 kg added N, respectively. 238 genotypes were sown in augmented design, where some genotypes are replicated and the others are not. Images at different field rows were taken randomly between 7:30 and 11:00 AM. "TensorFlow_preprocessing.ipynb" notebook can be used for data preprocessing and generation of additional 1200- 3600 images in processes of augmentation and segmentation.