Effects of Soil and Water Conservation Measures on Soil Quality Indicators: The Case of Geshy Subcatchment, Gojeb River Catchment, Ethiopia

Table 6

Results of the analysis of variance of soil quality indicators across the treatments, slope positions, and positions within the terraces in the Geshy subcatchment.

SQI	Treatment		Slope classes		Terrace position		Interaction
							T  S		T  TePo		S  TePo		T  S  TePo
	MS		MS		MS		MS		MS		MS		MS
	0.00	0.81	0.06	0.42	0.03	0.21	0.03	0.21	0.02	0.37	0.01	0.60	0.00	0.97
Sand	2.67	0.47	3.17	0.54	6.17	0.31	6.17	0.31	1.39	0.76	1.67	0.86	2.06	0.80
Silt	262	0.00	3.13	0.83	0.13	0.99	0.13	0.99	43.6	0.09	16.1	0.44	2.10	0.97
Clay	237	0.01	10.7	0.71	4.57	0.86	4.57	0.86	53.5	0.19	20.3	0.62	4.91	0.96
SWC	926	0.00	42.1	0.27	867	0.00	1.54	0.95	26.9	0.43	75.5	0.07	35.7	0.35
TP	1.50	0.81	21.1	0.44	39.4	0.22	39.4	0.22	25.3	0.37	16.5	0.62	3.32	0.97
pH	0.33	0.00	0.03	0.25	0.01	0.57	0.11	0.89	0.03	0.27	0.01	0.72	0.01	0.58
SOC	0.43	0.04	0.26	0.08	1.12	0.00	0.47	0.01	0.16	0.20	0.02	0.93	0.01	0.99
TN	0.00	0.33	0.00	0.01	0.00	0.07	0.00	0.03	0.00	0.70	0.00	0.24	0.00	0.05
C : N	2.77	0.03	1.05	0.14	4.84	0.00	0.25	0.62	1.28	0.10	3.86	0.00	4.26	0.00
AP	7.95	0.08	8.94	0.03	7.76	0.05	3.08	0.29	1.81	0.48	0.31	0.97	4.66	0.13

SQI, soil quality indicators; , bulk density (gcm⁻³); SWC, volumetric soil water content (%); TP, total porosity (%); SOC, soil organic carbon (%); TN, total nitrogen (%); C : N, carbon-to-nitrogen ratio; AP, available phosphorus (ppm); MS, mean square error; P, value, T, treatments (i.e., with or without soil and water conservation measures); S, slope position; TePo, terrace positions. significantly different at .