Soil-Specific Calibration and Integration of Low-Cost Capacitive Soil Moisture Sensors into a Solar-Powered Sensor Node.

Yakubu S Zakaria, Sheng Chen, Thomas A Adongo, Gordana Kranjac-Berisavljevic, Hadi Larijani

Abstract read

In one paragraph

Article in Sensors (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

5 authors.

Yakubu S ZakariaDepartment of Agricultural Engineering, School of Engineering, University for Development Studies, Tamale TL1350, Ghana.

Sheng ChenDepartment of Engineering, Glasgow Caledonian University, Glasgow G4 0BA, UK.ORCID 0000-0002-9377-2426

Thomas A AdongoDepartment of Agricultural Mechanization and Irrigation Technology, Faculty of Agriculture, Food and Consumer Sciences, University for Dvelopment Studies, Tamale TL1350, Ghana.

Gordana Kranjac-BerisavljevicDepartment of Agricultural Mechanization and Irrigation Technology, Faculty of Agriculture, Food and Consumer Sciences, University for Dvelopment Studies, Tamale TL1350, Ghana.

Hadi LarijaniDepartment of Computer Science, Glasgow Caledonian University, Glasgow G4 0BA, UK.ORCID 0000-0002-6826-207X

Funding

Innovate UK 10098109

6 · The paper itself

Abstract

Accurate real-time soil moisture monitoring is critical for optimizing water use and ensuring crop health and food security. This study aims to calibrate and integrate low-cost capacitive soil moisture sensors into a solar-powered sensor node for real-time soil moisture monitoring in a loamy sand soil. Three capacitive soil moisture sensors were calibrated in the laboratory under controlled volumetric water content conditions (0-40%) using a constrained linear regression approach. The system was tested in a limited pilot-scale in a drip-irrigated onion field at the IWAD farm, Yagaba (North-East Region, Ghana). The results showed good agreement of the sensor readings with the soil moisture obtained using the gravimetric method (R

Indexed as

capacitive soil moisture sensorconstrained linear calibrationESP32InfluxDBinternet of thingsMQTTsoil-specific calibrationsolar-powered wireless sensor node

Identifiers

PMID42451223

DOI10.3390/s26133979

PMCPMC13364378

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.