Table 3.
The effect of the nitrogen level on the boll dry weight (g) of the two Bt cotton cultivars in 2015 and 2016.
| Cultivar | N rate (kg/ha) | 2015 | 2016 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 10 DAF | 20 DAF | 30 DAF | 40 DAF | 10 DAF | 20 DAF | 30 DAF | 40 DAF | ||
| SK-1 | 0(CK) | 1.35e | 2.82e | 4.24f | 4.63g | 1.53f | 2.41e | 3.34h | 4.05f |
| 75 | 1.50d | 3.78d | 4.73e | 4.91f | 1.72e | 3.13d | 3.83g | 4.35e | |
| 150 | 1.62c | 4.24c | 5.21d | 5.28e | 1.88d | 3.58c | 4.20ef | 4.93d | |
| 225 | 1.72b | 4.63b | 5.90c | 6.32c | 1.99c | 3.85bc | 4.45de | 5.16c | |
| 300 | 1.90a | 5.31a | 6.46ab | 6.70b | 2.22b | 4.45a | 4.95ab | 5.29bc | |
| SK-3 | 0(CK) | 1.33e | 2.94e | 4.71e | 5.18e | 1.59f | 2.53e | 3.96fg | 4.43e |
| 75 | 1.46d | 3.45d | 5.38d | 5.72d | 1.76e | 3.20d | 4.33e | 4.88d | |
| 150 | 1.59c | 4.34bc | 5.90c | 6.37c | 1.96cd | 3.73c | 4.64cd | 5.19c | |
| 225 | 1.71b | 5.04a | 6.25b | 6.80b | 2.14b | 4.05b | 4.85bc | 5.41b | |
| 300 | 1.94a | 5.13a | 6.73a | 7.22a | 2.40a | 4.65a | 5.14a | 5.63a | |
Symbol SK-1 and SK-3 are cultivar Sikang1 and Sikang3 respectively, CK is Control. DAF is acronym of “days after flowering.” Same letter among treatments within each sampling date represent non-significant difference (LSD test at 0.05 significance level).