Effects of soil and water conservation practices on soil physicochemical properties in Gumara watershed, Upper Blue Nile Basin, Ethiopia

Ecological Processes

Table 5 The effect of SWC practices on soil chemical properties in different land uses (cultivated and grazing land)

		pH (H₂O)	SOC (%)	SOM (%)	TN (%)	Av. P (ppm)	CEC and Exch. cations [cmol(+) kg⁻¹]
		pH (H₂O)	SOC (%)	SOM (%)	TN (%)	Av. P (ppm)	CEC	Na⁺	K⁺	Ca²⁺	Mg²⁺
Cultivated land	CL	5.712	2.027	3.494	.219	7.778	31.97	.305	.562	17.13	8.817
	NCL	5.6	1.248	2.152	.105	9.755	29.56	.178	.463	19.1	5.25
	F ratio	.316	11.577	11.577	12.607	.474	.301	5.346	.545	.223	14.101
	p	.586^ns	.007**	.007**	.005**	.507^ns	.595^ns	.043*	.477 ^ns	.647 ^ns	.004**
Grazing land	CL	5.82	2.96	5.1	.320	6.13	35.3	.32	.47	21.4	8.55
	NCL	5.72	2.07	3.56	.172	6.05	34.3	.18	.47	23.7	6.48
	F ratio	.461	1.647	1.647	3.408	.006	.021	5.93	.003	.205	1.638
	p	.512^ns	.228^ns	.228^ns	.095^ns	.941^ns	.886^ns	.035*	.958^ns	.66^ns	.229^ns

Av. P available phosphorous, CEC cation exchange capacity, CL conserved land, NCL non-conserved land, ns not significant at p < 0.05, P p value, SOC soil organic carbon, SOM soil organic matter; **,* significantly different at p < 0.01 and p < 0.05 respectively (two-tailed); TN total nitrogen