Table 3.
Effect of RPN on rice yield and its components.
| Year | Treatment | Panicle length (cm) | Panicle number | Grain number per panicle (×104 ·ha−1) | 1000 grain weight (g) | Average yield (kg/hm2) | Increased yield (kg/hm2) | Ratio (%) |
|---|---|---|---|---|---|---|---|---|
| 2010 | CK | 16.2 b | 112 c | 76.7 c | 25.7 a | 3990 b | — | — |
| N300 | 16.5 b | 169 a | 109.3 a | 21.9 b | 9634 a | 5644 | 141.5 | |
| N240 | 19.0 a | 141 b | 98.6 b | 22.0 b | 9631 a | 5641 | 141.4 | |
| RPN I | 19.5 a | 152 ab | 105.7 a | 22.8 ab | 10326 a | 6336 | 158.8 | |
| RPN II | 19.0 a | 148 b | 92.5 b | 23.4 a | 10727 a | 6737 | 168.8 | |
|
| ||||||||
| 2011 | CK | 12.1 b | 105 b | 71.8 c | 26.1 a | 3366 b | — | — |
| N300 | 15.4 a | 147 a | 111.8 a | 23.7 b | 8676 a | 5310 | 157.8 | |
| N240 | 15.0 a | 138 a | 106.4 a | 23.9 b | 8498 a | 5132 | 152.5 | |
| RPN I | 15.1 a | 145 a | 109.7 a | 24.8 a | 8778 a | 5412 | 160.8 | |
| RPN II | 14.8 a | 138 a | 99.4 b | 24.1 ab | 8612 a | 5246 | 155.9 | |
Figures followed by the same letters within a column for different treatments are not significantly different at the significance level P < 0.05 based on one-way analysis of variance (ANOVA).