Informed Learning for Estimating Drought Stress at Fine-Scale Resolution Enables Accurate Yield Prediction

• URL: http://arxiv.org/abs/2510.18648v1
• Date: Tue, 21 Oct 2025 13:58:04 GMT
• Title: Informed Learning for Estimating Drought Stress at Fine-Scale Resolution Enables Accurate Yield Prediction
• Authors: Miro Miranda, Marcela Charfuelan, Matias Valdenegro Toro, Andreas Dengel,
• Abstract summary: Water is essential for agricultural productivity. Assessing water shortages and reduced yield potential is a critical factor in decision-making.<n>Crop simulation models, which align with physical processes, offer intrinsic explainability but often perform poorly.<n>Machine learning models for crop yield modeling are powerful and scalable, yet they commonly operate as black boxes and lack adherence to the physical principles of crop growth.
• Score: 10.780371055923304
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Water is essential for agricultural productivity. Assessing water shortages and reduced yield potential is a critical factor in decision-making for ensuring agricultural productivity and food security. Crop simulation models, which align with physical processes, offer intrinsic explainability but often perform poorly. Conversely, machine learning models for crop yield modeling are powerful and scalable, yet they commonly operate as black boxes and lack adherence to the physical principles of crop growth. This study bridges this gap by coupling the advantages of both worlds. We postulate that the crop yield is inherently defined by the water availability. Therefore, we formulate crop yield as a function of temporal water scarcity and predict both the crop drought stress and the sensitivity to water scarcity at fine-scale resolution. Sequentially modeling the crop yield response to water enables accurate yield prediction. To enforce physical consistency, a novel physics-informed loss function is proposed. We leverage multispectral satellite imagery, meteorological data, and fine-scale yield data. Further, to account for the uncertainty within the model, we build upon a deep ensemble approach. Our method surpasses state-of-the-art models like LSTM and Transformers in crop yield prediction with a coefficient of determination ($R^2$-score) of up to 0.82 while offering high explainability. This method offers decision support for industry, policymakers, and farmers in building a more resilient agriculture in times of changing climate conditions.

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