| Article | Year | Crop | Part | Diseases | Severity Grade/Level | Dataset | Models used | Results |
| [32] | 2016 | Cassava | Leaf | Cassava mosaic, Cassava brown streak, Cassava bacterial blight, Cassava green mite | 5 severity levels ranged from 1 to 5 | Self-collected (7.386 images) | SVC, KNN and Extra Trees | Accuracy scores close to 99%. |
| [33] | 2022 | Watermelon | Leaf | Downy mildew | Low, medium 1, medium 2, high and very high | Self-collected | MLP and DT | Best performance: 87% - 90% of accuracy |
| [34] | 2023 | Wheat | Leaf | Stripe rust | 1%, 5%, 10%, 20%, 40%, 60%, 80%, and 100% | Self-collected (400 images) | K-Means, Spectral clustering, SVM, RF and KNN | KNN: 100% of overall accuracy |