| Soil Texture | n | Mean %OM Change/Year | lbs. OM/ac/yr |
| Sandy Clay Loam | 1 | 0.35 | 7000 |
| Sand | 15 | 0.09 | 1800 |
| Loamy Fine Sand | 129 | 0.06 | 1200 |
| Loamy Sand | 108 | 0.06 | 1276 |
| Sandy Loam | 68 | 0.03 | 648 |
| Fine Sandy Loam | 136 | 0.03 | 600 |
| Loam | 29 | 0.07 | 1328 |