Table 6.
Nitrogen balance sheet in wheat as influenced by changes in N scheduling in 2017–18 and 2018–19.
| Treatment | Initial soil N (kg N ha–1) (a) |
Fertilizer N (kg N ha–1) (b) | Total N (kg N ha–1) (c = a + b) |
Total grain + straw N uptake (kg N ha–1) (d) | Expected balance (kg N ha–1) (e = c – d) | Final balance (kg N ha–1) (f) | Net gain or loss (kg N ha–1) (g = f – e) |
|---|---|---|---|---|---|---|---|
| 2017–18 | |||||||
| T1 | 188.16 | 0 | 188.16 | 31.4 | 156.76 | 170.53 | +13.27 |
| T2 | 188.16 | 150 | 338.16 | 93.9 | 244.26 | 185.38 | –58.88 |
| T3 | 188.16 | 120 | 308.16 | 84.6 | 223.56 | 177.53 | –46.03 |
| T4 | 188.16 | 150 | 338.16 | 89.4 | 248.76 | 182.28 | –66.48 |
| T5 | 188.16 | 120 | 308.16 | 80.0 | 228.16 | 172.94 | –55.22 |
| T6 | 188.16 | 119 | 307.16 | 80.6 | 226.56 | 175.32 | –51.24 |
| T7 | 188.16 | 140 | 328.16 | 91.0 | 237.16 | 178.90 | –58.26 |
| T8 | 188.16 | 155 | 343.16 | 97.6 | 245.56 | 184.00 | –61.56 |
| T9 | 188.16 | 142 | 330.16 | 89.6 | 240.56 | 175.63 | –64.93 |
| T10 | 188.16 | 225 | 413.16 | 103.6 | 309.56 | 192.72 | –116.84 |
| Treatments | 2018–19 | ||||||
| T1 | 171.23 | 0 | 171.23 | 23.9 | 147.33 | 154.95 | +17.62 |
| T2 | 171.23 | 150 | 321.23 | 94.8 | 226.43 | 181.73 | –44.70 |
| T3 | 171.23 | 120 | 291.23 | 79.6 | 211.63 | 162.51 | –49.12 |
| T4 | 171.23 | 150 | 321.23 | 93.6 | 227.23 | 178.38 | –48.95 |
| T5 | 171.23 | 120 | 299.23 | 80.9 | 210.33 | 165.48 | –44.85 |
| T6 | 171.23 | 119 | 289.23 | 76.9 | 212.33 | 157.31 | –55.02 |
| T7 | 171.23 | 140 | 303.23 | 84.9 | 218.33 | 162.48 | –55.85 |
| T8 | 171.23 | 155 | 328.23 | 99.9 | 223.33 | 172.30 | –51.03 |
| T9 | 171.23 | 142 | 301.23 | 84.8 | 2.6.43 | 160.48 | –55.95 |
| T10 | 171.23 | 225 | 396.23 | 108.8 | 287.43 | 196.29 | –91.14 |