Variability of Soil Physical Properties in a Clay-Loam Soil and Its Implication on Soil Management Practices

Table 1

Descriptive statistics for soil physical properties at four depths in a clay-loam soil.

	AFPS	BDY	Diff.	GWC	TPS	Tort	VAC	VWC	WFPS
D1 (0–10 cm)
Mean	45.76	1.24	0.06	0.22	0.51	4.60	0.24	0.28	54.24
SD	10.61	0.11	0.03	0.03	0.04	1.50	0.07	0.04	10.61
C.V	23.18	8.99	56.29	15.25	8.36	32.60	29.64	15.26	19.56
Median	45.71	1.24	0.06	0.22	0.52	4.10	0.24	0.28	54.29
D2 (10–20 cm)
Mean	26.54	1.47	0.02	0.21	0.42	12.46	0.12	0.31	73.46
SD	11.19	0.18	0.02	0.048	0.07	10.70	0.06	0.05	11.19
C.V	42.15	12.09	91.61	22.48	16.40	85.91	49.83	17.11	15.23
Median	27.32	1.46	0.01	0.22	0.43	9.04	0.11	0.31	72.68
D3 (20–40 cm)
Mean	42.35	1.20	0.06	0.26	0.53	4.72	0.23	0.30	57.65
SD	8.19	0.12	0.03	0.04	0.05	1.29	0.06	0.03	8.19
C.V	19.33	9.75	53.22	13.92	8.68	27.30	26.27	11.48	14.20
Median	42.11	1.20	0.05	0.25	0.53	4.52	0.22	0.31	57.90
D4 (40–60 cm)
Mean	39.34	1.18	0.05	0.28	0.54	4.94	0.21	0.32	60.66
SD	7.62	0.07	0.02	0.03	0.03	1.12	0.05	0.03	7.62
C.V	19.36	5.57	46.36	10.43	4.83	22.69	22.72	10.58	12.56
Median	39.74	1.18	0.05	0.27	0.54	4.67	0.22	0.33	60.27

AFPS: Air filled pore space (%); BDY: Soil bulk density (gcm⁻³); DIFF.: Relative gas diffusion coefficient (m² s⁻¹ m⁻² s); GWC: Gravimetric water content of soil (g·g⁻¹); TPS: Total pore spaces (cm³ cm⁻³); TORT: Pore tortuosity factor (m·m⁻¹); VAC: Volumetric air content (cm³ cm⁻³); VWC: Volumetric water content (cm³ cm⁻³); WFPS: Water filled pore space (%).