Age of Soil and Water Conservation Practices on Selected Soil Properties along the Toposequence of Gerado Watershed, Habru District, Eastern Amhara, Ethiopia

Table 2

Effects of SWC age, slope position, and soil depth on pH, total N (%), available P (mg kg⁻¹), SOC (%), and SOCS (t ha⁻¹).

Age of SWC	Slope position	Depth (cm)	pH	Total N	Available P	SOC (%)	SOCS
SWC 9 years	Upper	40	6.57^c–f	0.61^c–e	31.2^c	1.27^def	62.78^c
		20	6.73^bc	0.81^a	31.2^c	1.84^c	35.59^g
	Middle	40	6.77^bc	0.59^c–f	31.2^c	1.21^e–g	69.86^b
		20	6.84^b	0.73^a–c	32.2^b	2.44^b	35.62^g
	Lower	40	6.71^b–d	0.60^b–d	31.2^c	1.13^fgh	66.08^b–c
		20	7.77^a	0.78^ab	33.5^a	2.85^a	31.38^g–h
SWC 3 years	Upper	40	6.59^c–f	0.44^f	19.3^f	1.04^fgh	73.63^a
		20	6.33^e–h	0.47^ef	19.3^f	1.57^c–e	34.47^g
	Middle	40	6.49^c–g	0.44^f	19.3^f	0.86^g–i	57.30^c–d
		20	6.48^c–g	0.49^d–f	22.3^e	1.61^cd	43.24^f
	Lower	40	6.59^c–f	0.46^ef	19.3^f	0.85^g–i	57.70^c–d
		20	6.58^c–f	0.59^c–f	26.2^d	1.85^c	53.76^d
Nonconserved	Upper	40	6.63^c–e	0.26^g	13.2^g	0.47^j–l	34.78^g
		20	6.15^h	0.23^g	13.1^g	0.78^i–l	19.03^h
	Middle	40	6.39^e–h	0.15^g	13.1^g	0.46^j–l	32.51^g–h
		20	6.20^gh	0.16^g	13.1^g	0.41^l	12.03^h–i
	Lower	40	6.17^gh	0.15^g	13.1^g	0.60^i–l	41.93^f–g
		20	6.30^fgh	0.18^g	13.1^g	0.28^l	9.26^i
LSD			2.979	0.159	0.139	0.390	0.240

SOC: soil organic carbon; SOCS: soil organic carbon stock. Means within a column followed by the same letter are not significantly different at P < 0.05.