Table 6: Relative change of soil salinity after application of compost and Gypsum.
Treatments |
Dependent variables |
||||||||
Initial EC (mmho ms\cm) |
Residual EC (mmho ms\cm) |
Change in EC (%) |
Initial ESP (%) |
Residual ESP (%) |
Change in ESP (%) |
Initial Ex.ca+2 (meq\100g) |
Residual Ex.ca+2 (meq\100g) |
Change in ESP (%) Ex.ca+2 (meq\100g) |
|
0 (control) |
3.8 |
3.78 |
0.53 |
16.01 |
15.97 |
0.25 |
8.02 |
7.93 |
1.12 |
2.5t/ha compost |
3.72 |
3.28 |
11.83 |
15.23 |
13.6 |
10.7 |
11 |
8.75 |
20.6 |
5t/ha compost |
3.92 |
2.52 |
35.71 |
14.95 |
12.7 |
15.05 |
8.43 |
10.2 |
20.88 |
2t/ha Gypsum |
4.11 |
1.9 |
53.77 |
20.35 |
6.87 |
66.24 |
10.3 |
17.6 |
70.57 |
4t/ha Gypsum |
3.28 |
0.68 |
79.27 |
19.35 |
3.61 |
81.34 |
12.5 |
21 |
68.16 |
2.5t/ha compost+2t/ha Gypsum |
4.3 |
1.7 |
60.47 |
18.35 |
4.55 |
75.2 |
10.2 |
17.8 |
74.51 |
2.5t/ha compost+4t/ha Gypsum |
3.25 |
0.92 |
72.54 |
15.68 |
1.63 |
89.6 |
11.6 |
23 |
98.79 |
5t/ha compost+2t/ha Gypsum |
3.37 |
1.65 |
53.78 |
19.36 |
4.52 |
76.65 |
11.6 |
17.9 |
54.58 |
5t/ha compost+4t/ha Gypsum |
4.01 |
0.36 |
91.02 |
20.5 |
1.46 |
92.88 |
11.9 |
24.6 |
107.5 |
Source: Kasahun, et al. [6]