Characterization and Classification of Soils of Abobo Area, Western Ethiopia

Table 7

Organic carbon, total nitrogen, carbon to nitrogen ratio, available P, and available K contents of soils of Abobo area.

Pedon	Horizon	Depth (cm)	OC (%)	TN; (%)	C : N	Available P (mg kg^−1)	Available K (mg kg^−1)
A-1	Ap	0–18	2.64	0.20	13	25.34	295
	Bw1	18–25	1.72	0.13	13	17.28	285
	Bw2	25–35	0.84	0.05	16	6.09	301
	CB	35–110	0.56	0.04	13	7.15	274
A-2	A	0–18	1.98	0.18	11	47.84	780
	Ad	18–27	1.19	0.08	15	22.50	750
	Bt1	27–37	0.61	0.05	12	10.26	581
	Bt2	37–50	0.52	0.04	13	16.37	473
	BC	50–80	0.31	0.02	15	9.20	330
A-3	Ap	0–22	1.32	0.11	12	50.00	700
	A	22–33	0.75	0.07	11	31.35	615
	Bt1	33–45	0.63	0.05	13	14.20	439
	Bt2	45–63	0.42	0.03	14	10.86	201
	BC	63–90	0.27	0.03	9	8.11	134
A-4	Ap	0–10	2.98	0.24	12	88.40	1155
	A	10–19	2.79	0.21	13	60.35	1079
	Bt1	19–37	1.52	0.11	13	33.12	754
	Bt2	37–75	0.80	0.07	11	8.38	180
	BC	75–85	0.60	0.05	12	6.79	236
A-5	Ap	0–17	1.94	0.14	14	16.28	115
	A	17–55	1.28	0.16	8	11.35	150
	Bss1	55–116	0.76	0.05	15	6.08	115
	BCss2	116–150	0.44	0.03	14	7.43	123
A-6	Ap	0–20	2.59	0.23	11	108.32	755
A-7	A	0–29	2.10	0.20	10	4.92	210
	Bss1	29–48	1.40	0.11	13	2.37	186
	Bss2	48–105	0.48	0.04	12	0.22	130
	BCss	105–150+	0.28	0.02	14	1.44	145