Table 5 Comparative analysis of field calibration and empirical models against SM150 sensor.

From: Designing and field calibration of low-cost microcontroller-based soil moisture sensor for subsurface drip-irrigation system

Treatment

Correlation coefficient

MAE

REA

RMSE

MAPE

FCM vs. SMT150

0.987*

0.78

0.39

0.23

5.21

EM 2 vs. SMT150

0. 987*

1.59

1.07

0.32

10.51

  1. FCM – Field calibrated model, EM –empirical model, MAE- mean absolute error, REA- relative absolute error, RMSE- root mean square error, MAPE- mean absolute percentage error.
  2. * Significant at 5% level of significance.
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