| 0 |
Dry seed sown |
| 1, 2 |
Seed swelling; seed coat slips |
| 3 |
Radicle emergence |
| 4, 5, 6 |
Radicle growing; primary roots forming; hypocotyl growing |
| 7, 8 |
Cotyledons starting to poke upward; radicle continues to grow; forming primary roots |
| 9, 10 |
Cotyledon emergence begins; seed coat sloughing off |
| 10, 11, 12 |
Unifoliate leaves opening |
| 12, 13, 14 |
Tiny trifoliate leaf visible on stem apex; unifoliate leaves expanding |
| 14 |
Start 100 ppm nitrogen fertilizer - every watering |
| 15, 16 |
First trifoliate leaf present; unifoliate leaves expanding |
| 16, 17 |
First trifoliate leaf opening; axillary buds obvious; second trifoliate present |
| 18 |
First trifoliate leaf open; second trifoliate opening |
| 19, 20, 21 |
First trifoliate and second trifoliate leaves continue to expand |
| 21 |
Up fertilizer to 150 ppm N - every watering |
| 22, 23, 24 |
First and second trifoliate leaves continue to expand; third trifoliate leaf obvious |
| 25, 26 |
Third trifoliate leaf expands; fourth trifoliate leaf present |
| 25, 26, 27 |
Check axils of the unifoliate and all trifoliate leaves for bud growth |