Optimizing Nitrogen Management with Deep Reinforcement Learning and Crop Simulations

• URL: http://arxiv.org/abs/2204.10394v1
• Date: Thu, 21 Apr 2022 20:26:41 GMT
• Title: Optimizing Nitrogen Management with Deep Reinforcement Learning and Crop Simulations
• Authors: Jing Wu, Ran Tao, Pan Zhao, Nicolas F. Martin, Naira Hovakimyan
• Abstract summary: Nitrogen (N) management is critical to sustain soil fertility and crop production while minimizing the negative environmental impact, but is challenging to optimize. This paper proposes an intelligent N management system using deep reinforcement learning (RL) and crop simulations with Decision Support System for Agrotechnology Transfer (DSSAT) We then train management policies with deep Q-network and soft actor-critic algorithms, and the Gym-DSSAT interface that allows for daily interactions between the simulated crop environment and RL agents.
• Score: 11.576438685465797
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Nitrogen (N) management is critical to sustain soil fertility and crop production while minimizing the negative environmental impact, but is challenging to optimize. This paper proposes an intelligent N management system using deep reinforcement learning (RL) and crop simulations with Decision Support System for Agrotechnology Transfer (DSSAT). We first formulate the N management problem as an RL problem. We then train management policies with deep Q-network and soft actor-critic algorithms, and the Gym-DSSAT interface that allows for daily interactions between the simulated crop environment and RL agents. According to the experiments on the maize crop in both Iowa and Florida in the US, our RL-trained policies outperform previous empirical methods by achieving higher or similar yield while using less fertilizers

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