Crop | Depth | Jan 2005 | Jul 2005 | Nov 2005 | Jan 2006 | Mar 2006 | Jan 2007 | Mar 2007 | Control Field3 |
Wheat | Subsurface1 | 40 | 36 | 10 | 8 | 6 | 5 | 2.5 | 0 |
| Surface2 | 32 | 88 | 21 | 6 | 13 | 4 | 6 | 0 |
Barley | Subsurface | 37 | 17 | 12 | 3 | 7 | 6 | 2.5 | 0 |
| Surface | 41 | 21 | 15 | 8 | 16 | 5 | 4 | 0 |
Field Average | Subsurface | 39 | 27 | 11 | 5 | 6 | 5.5 | 2.5 | 0 |
| Surface | 36 | 57 | 18 | 7 | 15 | 4.5 | 5 | 0 |