Value | Category |
---|---|
1 | Erosion |
2 | Continuous cultivation |
3 | Overgazing |
4 | Absence of crop rotation |
5 | No idea |
6 | Others |
7 | Continous application of fertilizer |
8 | Never use manure |
9 | Planted eucalyptus tree around the land |
10 | Change of climate/shortage of rain |
11 | Never use fertilizer |
99 | Don't know |