| Value | Category | Cases | |
|---|---|---|---|
| 1 | Erosion | 12 |
8.6%
|
| 2 | Continuous cultivation | 7 |
5%
|
| 3 | Overgazing | 34 |
24.5%
|
| 4 | Absence of crop rotation | 66 |
47.5%
|
| 5 | No idea | 5 |
3.6%
|
| 6 | Others | 9 |
6.5%
|
| 7 | Continous application of fertilizer | 1 |
0.7%
|
| 8 | Never use manure | 3 |
2.2%
|
| 9 | Planted eucalyptus tree around the land | 1 |
0.7%
|
| 10 | Change of climate/shortage of rain | 1 |
0.7%
|
| 11 | Never use fertilizer | 0 |
0%
|
| 99 | Don't know | 0 |
0%
|
| Sysmiss | 4843 |