Evaluation of Soil Quality in Arid Western Fringes of the Nile Delta for Sustainable Agriculture

Table 2

Descriptive statistics of soil and terrain indicators.

Indicator	Mean	SE	Min	Q1	Median	Q3	Max
Sand	81.09	0.39	65.00	76.00	80.00	85.00	99.87
Silt	6.16	0.17	0.09	5.00	7.54	10.00	17.79
Clay	8.51	0.28	0.04	8.00	12.00	15.00	26.00
pH	7.38	0.02	7.00	7.16	7.24	7.50	8.20
EC	2.63	0.10	0.05	2.02	2.96	3.86	13.14
OM	0.22	0.01	0.01	0.14	0.21	0.37	1.50
ESP	6.43	0.16	1.00	4.51	6.92	9.98	13.46
CEC	2.13	0.10	0.02	1.46	2.32	3.16	11.71
CaCO3	1.95	0.13	0.04	1.44	2.63	4.20	17.22
FC	10.95	0.23	2.89	9.54	12.39	15.02	24.63
AWHC	5.40	0.06	2.86	4.89	5.60	6.35	8.61
BD	1.59	0.00	1.41	1.59	1.61	1.62	1.63
PD	1.69	0.00	1.42	1.67	1.72	1.75	1.84
Slp	5.90	0.22	0.54	4.09	6.32	9.89	24.11
Rlf	14.94	0.28	3.00	12.00	15.00	19.00	44.00
TWI	7.79	0.09	5.52	6.82	7.24	8.33	11.70
Kaiser–Meyer–Olkin measure of sampling adequacy				MSA	0.74
Bartlett’s test of sphericity		Approx. chi-square			16428.05
				Df	120
				Sig.	0.00

Mean is represented by geometric mean, SE is the standard error, Min is the minimum value, Max is the maximum value, Q₁ and Q₃ are the lower and upper quartiles, respectively.