Analysis of the Accuracy of an FDR Sensor in Soil Moisture Measurement under Laboratory and Field Conditions

Table 2

Goodness-of-fit test between soil water content (SWC, % vol) calculated based on Insentek sensor and oven-drying method across different soil textures and soil bulk densities.

Treatments		Microweighing lysimetric values (% vol)			Goodness-of-fit
		WP	FC	Average SWC	RMSE	RPD
Soil texture	Sand	3.46 c	28.6 b	18.09 c	1.044	6.78	0.997	0.0001
	Loam	7.26 b	35.1 a	22.71 b	0.927	7.99	0.995	0.0001
	Clay	17.7 a	33.7 a	25.35 a	0.897	5.61	0.997	0.0001
Soil bulk density (g cm^–3)	1.1	7.47 b	25.1 c	15.6 c	0.921	5.93	0.997	0.0001
	1.2	17.7 a	35.1 a	26.4 a	1.164	4.68	0.998	0.0001
	1.3	7.14 b	33.7 a	23.8 b	0.863	7.88	0.999	0.0001
	1.4	3.46 c	28.8 b	17.9 c	0.320	22.8	1.000	0.0001
	1.5	9.22 b	28.2 b	21.1 b	1.482	3.71	0.996	0.0001

Note: WP is wilt point; FC is field holding capacity; is coefficient of determination; RMSE is root mean square error; RPD is relative prediction deviation, and values measured by Insentek sensor are reliable with ; and is probability. Different letters in each column indicate significant differences at .