International Journal of Research and Development in Engineering Sciences https://www.ijrdes.com N Divya 7 1 (January - February) 2025 01 January-February enMachine LearningPrecision AgricultureImage RecognitionCrop ManagementEnvironmental Data. The Mango leaf diseases significantly restrain mango output as they affect yield and tree health Mango leaf sooty mould disease is one of the diseases which affects the trees photosynthesis and general vigor quite severely This research study looks into the use of deep learning models like the Residual Network with 50 stacks and ResNext50 for assessing that severity classification of mango leaf sooty mould disease The model evaluates severity based on the dataset of 25000 images obtained from different mango fields as per the study The overall accuracy achieved is 9461 for the ResNext50 architecture through layerwise parameter analysis performance metrics and confusion matrices Model comparisons in the field reveal advantages across and between models This research not only proves the use of DL in disease management but also paves the way for more applications in farming use Automated mango leaf disease assessment is always bright white Copyright (c) 2026 International Journal of Research and Development in Engineering Sciences. All rights reserved. 2025 All Rights Reserved