Table 1 K, C and P factors Hurni (1985)
Erodibility | |
|---|---|
Soil colour | K value |
Black (e.g. Andosol, Vertisol) | 0.15 |
Red (e.g. Nitisol) | 0.20 |
Brown (e.g. Cambisol, Phaeozem) | 0.25 |
Yellow (e.g. Fluvisol, Xerosol) | 0.30 |
Management practices (Management) | P value |
Protected/reforested | 0.50 |
Terraces | 0.60 |
Strip cropping | 0.80 |
Grazing areas | 0.90 |
Ploughing on contour | 0.90 |
Ploughing up and down | 1.00 |
Cover factor | |
|---|---|
Land cover | C value |
Dense forest | 0.001 |
Dense grass | 0.01 |
Badlands hard | 0.05 |
Degraded grass | 0.05 |
Fallow hard | 0.05 |
Other forest | 0.05 |
Sorghum, maize | 0.10 |
Cereals, pulses | 0.15 |
Ethiopian tef | 0.25 |
Badlands soft | 0.40 |
Fallow ploughed | 0.60 |
Continuous fallow | 1.00 |