Table 3. Effect of nitrogen levels and ratios on plant height and length of basal internodes.
| N level (kg ha-1) | N ratio | 2012–2013 | 2013–2014 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Length of basal internodes (cm) | Plant height (cm) | Length of basal internodes/Plant height (%) | Length of basal internodes (cm) | Plant height (cm) | Length of basal internodes/Plant height (%) | ||||
| I | II | I | II | ||||||
| 180 | 7:1:2:0 | 6.71abc α | 10.63ab | 90.54a | 18.06ab | 5.72abc | 9.53b | 92.34a | 18.11ab |
| 5:1:2:2 | 6.44bc | 10.48ab | 90.93a | 17.56ab | 5.49bc | 9.48b | 92.79a | 17.66ab | |
| 3:1:3:3 | 5.99c | 10.46b | 91.27a | 17.11b | 5.16c | 9.45b | 93.47a | 17.18b | |
| 225 | 7:1:2:0 | 7.02ab | 10.84ab | 91.54a | 18.32a | 5.92ab | 10.13ab | 93.63a | 18.86ab |
| 5:1:2:2 | 6.57bc | 10.61ab | 91.68a | 17.69ab | 5.61abc | 9.78b | 94.64a | 17.77ab | |
| 3:1:3:3 | 6.08c | 10.48b | 92.02a | 17.36ab | 5.49bc | 9.71b | 94.25a | 17.20b | |
| 270 | 7:1:2:0 | 7.50a | 10.93a | 92.09a | 18.45a | 6.06a | 10.71a | 95.25a | 19.69a |
| 5:1:2:2 | 7.33ab | 10.65ab | 92.06a | 17.96ab | 5.88ab | 9.79b | 95.70a | 18.45ab | |
| 3:1:3:3 | 6.70abc | 10.48b | 93.04a | 17.18b | 5.51abc | 9.92ab | 96.30a | 17.76ab | |
| F | |||||||||
| Nitrogen levels(NL) | 14.44** | 2.87 | 5.30** | 1.28 | 6.94** | 8.15** | 4.85** | 4.40* | |
| Nitrogen ratio(NR) | 14.26** | 11.11** | 1.35 | 16.39** | 14.08** | 5.31* | 0.55 | 10.01** | |
| NL×NR | 0.19 | 0.70 | 0.16 | 0.30 | 0.31 | 2.26 | 0.03 | 0.44 | |
α Values in a column followed by the same letter are not significantly different at P < 0.05 as determined by the LSD test. The test was conducted separately between the two years.
* F-test significant at 5% level.
** F-test significant at 1% level.