A Hybrid Modeling Framework for Crop Prediction Tasks via Dynamic Parameter Calibration and Multi-Task Learning

• URL: http://arxiv.org/abs/2603.15411v1
• Date: Mon, 16 Mar 2026 15:21:16 GMT
• Title: A Hybrid Modeling Framework for Crop Prediction Tasks via Dynamic Parameter Calibration and Multi-Task Learning
• Abstract summary: prediction of crop states (e.g., phenology stages and cold hardiness) is essential for timely farm management decisions.<n>Traditional biophysical models can be used for season-long predictions, but they lack the precision required for site-specific management.<n>Deep learning methods are a compelling alternative, but can produce biologically unrealistic predictions and require large-scale data.<n>We propose a emphhybrid modeling approach that uses a neural network to parameterize a differentiable biophysical model.
• Score: 12.931265480300715
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Accurate prediction of crop states (e.g., phenology stages and cold hardiness) is essential for timely farm management decisions such as irrigation, fertilization, and canopy management to optimize crop yield and quality. While traditional biophysical models can be used for season-long predictions, they lack the precision required for site-specific management. Deep learning methods are a compelling alternative, but can produce biologically unrealistic predictions and require large-scale data. We propose a \emph{hybrid modeling} approach that uses a neural network to parameterize a differentiable biophysical model and leverages multi-task learning for efficient data sharing across crop cultivars in data limited settings. By predicting the \emph{parameters} of the biophysical model, our approach improves the prediction accuracy while preserving biological realism. Empirical evaluation using real-world and synthetic datasets demonstrates that our method improves prediction accuracy by 60\% for phenology and 40\% for cold hardiness compared to deployed biophysical models.

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