Water Cherenkov Detectors in Precision Agriculture: A Novel Approach for High-Resolution Soil Moisture Monitoring

Christian Sarmiento-Cano; Jaime Betancour; Alejandro Núñez Selin; Luigui Miranda-Leuro; Iván Sidelnik; Hernán Asorey; Luis A. Núñez

arXiv · 2601.17595

Water Cherenkov Detectors in Precision Agriculture: A Novel Approach for High-Resolution Soil Moisture Monitoring

Christian Sarmiento-Cano·Jaime Betancour·Alejandro Núñez Selin·Luigui Miranda-Leuro·Iván Sidelnik·Hernán Asorey·Luis A. Núñez

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Abstract

Water Cherenkov Detectors (WCDs), traditionally employed in cosmic-ray detection, are repurposed here for precision soil moisture monitoring using cosmic-ray neutron sensing. This approach offers advantages over conventional neutron probes, including enhanced sensitivity to low moisture levels and the ability to cover larger soil volumes without subsurface intrusion. This study evaluates the feasibility of WCDs for agricultural neutron hydrometry, addressing challenges such as background suppression and data interpretation in heterogeneous soils. We present experimental results from controlled wet and dry soil-condition emulations, alongside Monte Carlo simulations using Geant4 with an atmospheric neutron spectrum to correlate signal variation with soil-moisture differences. By bridging particle physics and agronomy, WCDs could advance soil moisture monitoring, offering a non-invasive, scalable, and accurate alternative for optimizing agricultural water use. Preliminary findings suggest a transformative potential for sustainable farming, though further research is needed to enhance cost-efficiency and adaptability to diverse soil types.

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Christian Sarmiento-Cano, Jaime Betancour, Alejandro Núñez Selin, Luigui Miranda-Leuro, Iván Sidelnik, Hernán Asorey, Luis A. Núñez. 2026-01-24. Water Cherenkov Detectors in Precision Agriculture: A Novel Approach for High-Resolution Soil Moisture Monitoring. https://arxiv.org/abs/2601.17595

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