Effect of agricultural land management practices on the selected soil quality indictors: empirical evidences from the south Ethiopian highlands

Environmental Systems Research

Table 3 Mean value of selected soil chemical quality indictors in relation to the type of intervention and age of ALM practices

Parameters	NT		ToP5Y		ToP10Y		TIN5Y		TIN10Y		F	p
Parameters	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	F	p
pH-H20 (1:2.5)	5.31	0.45	5.86	0.92	6.44	0.45	6.32	0.46	6.6	0.33	16.9	0.000
SOC (%)	2.05	0.52	2.87	1.18	2.91	1.74	3.2	0.71	3.32	0.73	7.78	0.000
SOM (%)	3.52	0.89	4.93	1.29	5.01	1.22	5.5	1.27	5.71	1.26	10.3	0.000
TN (%)	0.18	0.07	0.24	0.07	0.22	0.06	0.26	0.07	0.29	0.05	5.13	0.001
Av. P (ppm)	11.12	3.95	16.11	18.5	19.06	6.13	22.68	15.5	24.92	5.94	4.45	0.003
S (ppm)	15.7	0.35	21.6	0.18	19.6	0.26	26	0.34	29.9	0.27	3.33	0.015
B (ppm)	0.42	0.04	0.59	0.08	0.65	0.02	0.76	0.06	0.79	0.02	3.44	0.013
CEC(meq/100gm)	24.85	12.2	33.29	8.56	34.97	10.2	36.79	12.2	37.29	16	3.34	0.012
K (ppm)	232.2	87.34	253.1	29.9	261.9	38.5	267.9	44.3	274.9	46.14	1.34	0.265

NT non-treated land, TolP5Y treated with only physical practices for 5 years, TolP10Y treated with only physical practices for 10 years, TIN10Y treated with integrate measures for 5 years, TIN10Y treated with integrate measures for 10 years, ppm parts per million