| Value | Category | Cases | |
|---|---|---|---|
| 1 | Erosion | 341 |
37.1%
|
| 2 | Continuous cultivation | 422 |
45.9%
|
| 3 | Overgazing | 17 |
1.8%
|
| 4 | Absence of crop rotation | 51 |
5.5%
|
| 5 | No idea | 47 |
5.1%
|
| 6 | Others | 16 |
1.7%
|
| 7 | Continous application of fertilizer | 1 |
0.1%
|
| 8 | Never use manure | 3 |
0.3%
|
| 9 | Planted eucalyptus tree around the land | 1 |
0.1%
|
| 10 | Change of climate/shortage of rain | 19 |
2.1%
|
| 11 | Never use fertilizer | 0 |
0%
|
| 99 | Don't know | 1 |
0.1%
|
| Sysmiss | 4063 |