Soil & Water Res., 2019, 14(4):195-199 | DOI: 10.17221/74/2018-SWR

Performance analysis of dielectric soil moisture sensorShort Communication

Iftikhar Ahmed Saeed1, Minjuan Wang1, Yanzhao Ren1, Qinglan Shi1, Muhammad Hammad Malik1, Sha Tao1, Qiang Cai2, Wanlin Gao*,1
1 College of Information and Electrical Engineering, China Agricultural University, Beijing, P.R. China
2 Beijing Key Laboratory of Big Data Technology for Food Safety, Beijing Technology and Business University, Beijing, P.R. China

Soil moisture (SM) varies greatly in the soil profile. We developed a low-cost sensor for SM monitoring at three vertical depths. The sensor function was based on dielectric theory to monitor SM. Three linear calibration models were established using different soils. The sensor for each depth showed acceptable statistics of validations. The linear fit coefficient of determination (R2) ranged from 0.95 to 0.99. Root mean square error (RMSE) ranged from 1.35 to 4.30. The sensor performed consistently for at least 4 months, and is suitable for continuous monitoring of in situ SM and irrigation scheduling.

Keywords: dielectric sensor; soil moisture; vertical depths

Published: December 31, 2019  Show citation

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Saeed IA, Wang M, Ren Y, Shi Q, Malik MH, Tao S, et al.. Performance analysis of dielectric soil moisture sensor. Soil & Water Res. 2019;14(4):195-199. doi: 10.17221/74/2018-SWR.
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