Treatment combinations and levels of fertilizer applied.
| Treatment | Amount added (g/pot) of NPK (20-10-5) |
|---|---|
| F0W0 | No fertilizer and well-watered at field capacity ≥ –0.3 MPa |
| F0W1 | No fertilizer and water-stressed at soil water potential ≥ –1.5 MPa |
| F1W0 | 10 g of fertilizer and well-watered at field capacity ≥ –0.3 MPa |
| F1W1 | 10 g of fertilizer and water-stressed at soil water potential ≥ –1.5 MPa |
| F2W0 | 20 g of fertilizer and well-watered at field capacity ≥ –0.3 MPa |
| F2W1 | 20 g of fertilizer and water-stressed at soil water potential ≥ –1.5 MPa |
| F3W0 | 30 g of fertilizer and well-watered at field capacity ≥ –0.3 MPa |
| F3W1 | 30 g of fertilizer and water-stressed at soil water potential ≥ –1.5MPa |
| F4W0 | 40 g of fertilizer and well-watered at field capacity ≥ –0.3 MPa |
| F4W1 | 40 g of fertilizer and water-stressed at soil water potential ≥ –1.5 MPa |
| F5W0 | 50 g of fertilizer and well-watered at field capacity ≥ –0.3 MPa |
| F5W1 | 50 g of fertilizer and water-stressed at soil water potential ≥ –1.5 MPa |