Leaf tissue concentration of N, P, and K at panicle initiation in the reduced and conventional N rate demonstration fields in 1999.
| Field # | Treatment | N- total | P- total | K- total |
| 3-1a | Reduced N | 4.0 | 0.28 | 1.9 |
| 3-1b | Normal N | 4.3 | 0.29 | 1.7 |
| 5-1a | Reduced N | 4.1 | 0.38 | 2.5 |
| 5-1b | Normal N | 4.3 | 0.38 | 2.5 |
| 5-2a | Reduced N | 4.3 | 0.33 | 1.7 |
| 5-2b | Normal N | 3.5 | 0.36 | 2.1 |
| 4-1a | Reduced N | 3.7 | 0.33 | 2.4 |
| 4-1b | Normal N | 4.4 | 0.38 | 2.7 |