Table 1. Yield and yield component factors under different types of nitrogen fertilizer.
| Treatments | 2014 | 2015 | ||||
|---|---|---|---|---|---|---|
| Number of storage root (No.) |
Average fresh weight per storage root (g) |
Fresh yield (t ha) |
Number of storage root (No.) |
Average fresh weight per storage root (g) |
Fresh yield (t ha) |
|
| C | 2.71c | 205.26c | 27.81d | 2.50c | 202.17b | 25.27c |
| HA | 2.84b | 195.77c | 27.80d | 2.73b | 206.69b | 28.21b |
| N | 2.69c | 220.24b | 29.62c | 2.38c | 227.87a | 27.11b |
| HA+N | 2.96ab | 221.35b | 32.76b | 2.75b | 230.64a | 31.71a |
| HA-N | 3.08a | 230.39a | 35.48a | 2.86a | 232.85a | 33.29a |
Means values marked with different small letters indicate significant difference at P = 0.05 levels