Characterization and Classification of Soils of Abobo Area, Western Ethiopia

Table 8

Exchangeable bases (Ca, Mg, K, and Na), cation exchange capacity (CEC), calcium to magnesium ratio (Ca : Mg), and percent base saturation (BS) of the soils.

Pedon	Depth (cm)	Exchangeable bases  kg^−1					CEC  kg^−1		ESP; (%)	Ca : Mg	PBS; (%)
		Ca	Mg	K	Na	TEB	Soil	Caly
A-1	0–18	12.50	5.70	0.75	0.11	13.07	25.54	72.97	0.4	2.19	75
	18–25	13.57	8.61	0.78	0.14	16.21	23.92	66.44	0.6	1.59	96
	25–35	11.02	4.34	0.71	0.16	20.37	24.13	65.22	0.7	2.54	68
	35–110	13.35	6.11	0.75	0.16	20.37	26.40	75.43	0.6	2.18	77
A-2	0–18	14.63	6.52	1.99	0.09	23.23	25.71	50.41	0.3	2.24	90
	18–27	15.01	6.07	1.76	0.10	22.87	25.02	47.21	0.4	2.47	91
	27–37	15.62	5.96	1.42	0.08	23.08	26.01	45.63	0.3	2.62	89
	37–50	13.20	7.01	1.57	0.10	21.88	25.96	39.94	0.4	1.88	84
	50–80	13.74	6.68	0.98	0.13	21.53	25.44	48.00	0.5	2.06	85
A-3	0–22	18.48	5.61	1.79	0.13	25.93	26.47	46.44	0.5	3.29	98
	22–33	16.36	5.61	1.63	0.26	23.86	27.32	49.67	0.9	2.92	87
	33–45	17.24	4.31	1.41	0.19	23.15	28.65	46.97	0.7	4.00	81
	45–63	18.61	5.01	0.98	0.18	24.77	29.34	47.32	0.6	3.71	84
	63–85	19.25	5.50	1.02	0.21	25.98	28.17	56.34	0.7	3.5	92
A-4	0–10	18.41	8.64	2.95	0.13	29.96	36.64	77.96	0.4	2.13	82
	10–19	16.27	8.03	1.87	0.15	26.32	34.12	65.61	0.4	2.03	77
	19–37	13.01	7.66	2.05	0.12	22.84	35.47	50.67	0.3	1.70	64
	37–75	10.24	7.36	0.46	0.11	18.18	27.53	36.70	0.4	1.39	66
	75–90	11.12	8.00	0.51	0.15	19.78	28.84	45.77	0.5	1.39	68
A-5	0–17	15.80	6.89	0.40	0.13	23.22	31.14	56.62	0.4	2.29	75
	17–55	14.98	6.54	0.37	0.24	22.13	30.79	52.19	0.8	2.29	72
	55–116	18.61	6.27	0.29	0.30	25.48	33.24	56.34	0.9	2.97	77
	116–150	20.23	5.97	0.31	0.35	26.86	34.11	55.92	1.3	3.39	79
A-6	0–20	12.81	3.76	1.93	0.11	18.61	20.66	62.61	0.5	3.41	90
A-7	0–19	20.33	3.90	0.54	0.22	28.99	35.08	74.73	0.6	5.21	83
	19–48	25.97	8.44	0.41	1.13	35.95	37.38	69.22	3.0	3.08	96
	48–105	28.38	8.77	0.33	1.35	38.83	44.70	67.69	3.0	3.24	87
	105–150+	29.12	8.98	0.33	1.41	39.84	43.56	64.06	3.2	3.24	91

= total exchangeable bases.