Modeling of Permanent Wilting from Particle Size Fractions of Coastal Plain Sands Soils in Southeastern Nigeria

Table 1

Descriptive Statistics of some physical properties of soils of the study sites.

Variable	SD	SE	Skewness	Kurtosis	Mean	Median	Min.	Max.
PWP (%)	4.33	0.43	0.02	−0.39	15.04	14.80	4.44	27.40
Sand (g kg^−1)	19.49	1.93	−0.73	−0.14	889.85	895.65	843.20	926.20
Coarse sand (g kg^−1)	47.81	4.73	−0.30	−1.47	760.78	782.45	668.00	825.40
Fine sand (g kg^−1)	36.57	3.62	0.62	−0.56	128.83	119.50	79.40	239.20
Silt (g kg^−1)	13.62	1.35	1.03	1.31	42.64	40.55	20.80	89.60
Clay (g kg^−1)	12.92	1.28	0.32	−0.36	67.52	64.80	40.20	99.40
SCR	0.28	0.03	2.70	10.45	0.66	0.62	0.26	2.08
Clay ratio	3.04	0.30	0.75	1.03	14.37	14.44	9.05	23.88

PWP: permanent wilting point, SCR: silt clay ratio, SD: standard deviation, and SE: standard error of mean.