Factor | Parameter | Explanatory Power (%) |
Ohio P Index Sub-value Inputs | ||
Soil erosion | 1 | 13.4 |
Connectivity to water | 2 | 29.7 |
Runoff class | 3 | 9.5 |
Soil test phosphorus | 4 | 31.9 |
Fertilizer application amount | 5 | 11.3 |
Fertilizer application method | 6 | 2.2 |
Filter strip | 9 | 2.0 |
Raw Component Inputs | ||
Slope length | 1 | 0.1 |
Slope steepness | 1, 2, 3 | 19.1 |
Soil erodibility | 1 | 0.0 |
Rainfall erosivity | 1 | 0.2 |
Crop management | 1, 5, 6 | 0.4 |
Soil texture | 1 | 0.0 |
Concentrated flow leaving field | 2 | 24.4 |
Stream adjacent | 2 | 4.6 |
Hydrologic soil group | 3 | 3.6 |
Soil test phosphorus | 4, 5 | 36.5 |
Fertilizer application amount | 5 | 6.0 |
Field cover | 6, 1 | 0.1 |
Fertilizer incorporation/timing | 6 | 2.4 |
Filter strip | 9 | 2.7 |