| Value | Category | Cases | |
|---|---|---|---|
| 1 | Erosion | 40 |
7.9%
|
| 2 | Continuous cultivation | 243 |
48.2%
|
| 3 | Overgazing | 58 |
11.5%
|
| 4 | Absence of crop rotation | 132 |
26.2%
|
| 5 | No idea | 6 |
1.2%
|
| 6 | Others | 16 |
3.2%
|
| 7 | Continous application of fertilizer | 2 |
0.4%
|
| 8 | Never use manure | 5 |
1%
|
| 9 | Planted eucalyptus tree around the land | 1 |
0.2%
|
| 10 | Change of climate/shortage of rain | 1 |
0.2%
|
| 11 | Never use fertilizer | 0 |
0%
|
| 99 | Don't know | 0 |
0%
|
| Sysmiss | 4478 |