Table 3.
Effects of winter cover crops on rice crop dry matter weight.
| Year | Rice season | Treatment | Tillering stage (103 kg hm−2) | Booting stage (103 kg hm−2) | Heading stage (103 kg hm−2) | Harvest stage (103 kg hm−2) |
|---|---|---|---|---|---|---|
| 2015 | Early rice | T0 | 1.3 ± 0.10a | 3.05 ± 0.16b | 5.30 ± 0.07c | 11.72 ± 0.38b |
| T1 | 1.65 ± 0.07a | 3.58 ± 0.18ab | 5.90 ± 0.13ab | 12.43 ± 0.24ab | ||
| T2 | 1.62 ± 0.14a | 3.29 ± 0.10ab | 5.78 ± 0.06b | 12.98 ± 0.23ab | ||
| T3 | 1.76 ± 0.28a | 3.80 ± 0.19a | 6.20 ± 0.15a | 13.15 ± 0.40a | ||
| T4 | 1.56 ± 0.08a | 3.37 ± 0.21ab | 5.71 ± 0.06b | 11.96 ± 0.57ab | ||
| Late rice | T0 | 3.33 ± 0.05b | 6.02 ± 0.68a | 8.73 ± 0.12a | 13.91 ± 0.03a | |
| T1 | 3.52 ± 0.20 ab | 5.87 ± 0.67a | 9.08 ± 0.31a | 15.66 ± 0.78a | ||
| T2 | 3.47 ± 0.02 ab | 6.82 ± 0.10a | 8.94 ± 0.19a | 14.33 ± 0.39a | ||
| T3 | 3.86 ± 0.19a | 6.97 ± 0.26a | 9.07 ± 0.22a | 15.24 ± 0.92a | ||
| T4 | 3.40 ± 0.03b | 6.70 ± 0.06a | 8.98 ± 0.08a | 14.73 ± 0.62a | ||
| 2018 | Early rice | T0 | 1.26 ± 0.12a | 1.69 ± 0.14a | 4.49 ± 0.23b | 7.35 ± 0.32a |
| T1 | 1.33 ± 0.16a | 1.82 ± 0.24a | 5.01 ± 0.20ab | 8.25 ± 0.81a | ||
| T2 | 1.37 ± 0.11a | 1.82 ± 0.12a | 4.52 ± 0.29b | 7.57 ± 0.52a | ||
| T3 | 1.40 ± 0.09a | 2.11 ± 0.09a | 5.23 ± 0.08a | 8.25 ± 0.14a | ||
| T4 | 1.59 ± 0.10a | 2.08 ± 0.16a | 5.39 ± 0.16a | 8.73 ± 0.21a | ||
| Late rice | T0 | 4.20 ± 0.18a | 6.51 ± 0.35a | 9.18 ± 0.31a | 12.19 ± 0.22a | |
| T1 | 4.35 ± 0.21a | 6.69 ± 0.36a | 9.39 ± 0.21a | 12.48 ± 0.57a | ||
| T2 | 4.31 ± 0.58a | 6.78 ± 0.34a | 9.40 ± 0.22a | 12.50 ± 0.16a | ||
| T3 | 4.55 ± 0.29a | 7.19 ± 0.63a | 9.42 ± 0.28a | 12.45 ± 0.34a | ||
| T4 | 4.54 ± 0.37a | 6.89 ± 0.49a | 9.58 ± 0.43a | 13.20 ± 0.84a |
Note: Means of three replicates and standard deviations. Letters indicate significant differences between the crops at P < 0.05.