Response variable | Fig. | Rainfall | Si-application | Clipping | Rainfall × Si–application | Rainfall × Clipping | Si–application × Clipping | Rainfall × Si–application × Clipping | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
F 2,60 | P | F 1,60 | P | F 1,60 | P | F 2,60 | P | F 2,60 | Â | F 1,60 | Â | F 2,60 | Â | ||
Soil characteristics | |||||||||||||||
 Soil moisture | 1B | 364.80 | < 0.001 | 22.47 | < 0.001 | 0.04 | 0.850 | 6.87 | 0.002 | 0.03 | 0.970 | 0.04 | 0.833 | 0.44 | 0.646 |
 Soil Sib | 2A | 3.08 | 0.053 | 59.63 | < 0.001 | 1.41 | 0.240 | 1.96 | 0.150 | 0.41 | 0.667 | 0.02 | 0.903 | 0.04 | 0.959 |
 Soil C | – | 2.66 | 0.078 | 2.41 | 0.125 | 0.55 | 0.461 | 0.10 | 0.908 | 0.28 | 0.760 | 0.01 | 0.984 | 0.97 | 0.386 |
 Soil Na | – | 2.37 | 0.102 | 0.01 | 0.952 | 0.05 | 0.819 | 0.16 | 0.856 | 0.77 | 0.468 | 0.01 | 0.927 | 1.06 | 0.352 |
Plant growth | |||||||||||||||
 Heighta | – | 5.89 | 0.005 | 4.29 | 0.043 | 0.96 | 0.332 | 0.34 | 0.715 | 0.16 | 0.852 | 1.26 | 0.266 | 0.05 | 0.956 |
 Tiller number | 1C | 43.95 | < 0.001 | 1.27 | 0.265 | 5.57 | 0.022 | 2.15 | 0.125 | 0.46 | 0.632 | 0.01 | 0.953 | 0.09 | 0.913 |
 Root massa | 1D | 9.33 | < 0.001 | 2.99 | 0.089 | 0.64 | 0.426 | 0.78 | 0.465 | 0.32 | 0.726 | 0.44 | 0.512 | 0.21 | 0.814 |
Plant chemistry | |||||||||||||||
 Root Si | 2B | 4.02 | 0.023 | 0.01 | 0.972 | 7.28 | 0.009 | 0.24 | 0.789 | 0.01 | 0.998 | 0.07 | 0.796 | 0.04 | 0.960 |
 Shoot Si | 2B | 40.78 | < 0.001 | 0.88 | 0.353 | 42.04 | < 0.001 | 2.83 | 0.066 | 2.30 | 0.109 | 0.01 | 0.963 | 0.41 | 0.664 |
 Root/shoot Sib | 2B | 18.75 | < 0.001 | 1.44 | 0.235 | 12.42 | < 0.001 | 1.85 | 0.166 | 0.02 | 0.979 | 0.01 | 0.992 | 0.02 | 0.984 |
 Root C | 2C | 7.60 | < 0.001 | 0.13 | 0.720 | 5.86 | 0.019 | 0.34 | 0.714 | 0.32 | 0.725 | 0.01 | 0.953 | 0.25 | 0.780 |
 Shoot C | 2C | 32.31 | < 0.001 | 0.03 | 0.862 | 52.14 | < 0.001 | 2.76 | 0.072 | 2.14 | 0.127 | 0.07 | 0.788 | 0.08 | 0.920 |
 Root N | – | 31.58 | < 0.001 | 0.01 | 0.934 | 3.77 | 0.057 | 0.08 | 0.923 | 1.29 | 0.282 | 0.37 | 0.545 | 0.35 | 0.706 |
 Shoot Nc | – | 1.72 | 0.187 | 0.07 | 0.796 | 0.99 | 0.323 | 2.89 | 0.063 | 2.74 | 0.072 | 0.21 | 0.651 | 0.09 | 0.918 |