Table 2.
Irrigation water use and water productivity (WPI), and partial factor productivity on nitrogen (PFPN) under different scenarios during the year 2016–17 and 2017–18.
| Scenariosa | Irrigation (mm ha−1) | WPI (kg grain m−3) | PFPN (kg grain kg−1 N applied) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Rice/Maize | Wheat | Mungbean | System | Rice/Maize | Wheat | Mungbean | System | Rice/Maize | Wheat | System | |
| 2016–17 | |||||||||||
| ScI | 1893Ab | 409A | -NAc- | 2302A | 0.40C | 1.38C | -NA- | 0.59D | 42.91C | 36.47C | 41.23C |
| ScII | 1562B | 349AB | 167B | 2078AB | 0.48C | 1.64BC | 0.30A | 0.73D | 49.27B | 38.13BC | 50.27B |
| ScIII | 1420B | 357AB | 183A | 1961B | 0.42C | 1.81BC | 0.08D | 0.67D | 36.75D | 42.33B | 42.55C |
| ScIV | 110D | 337B | 177AB | 624C | 7.18B | 2.05B | 0.09D | 2.37B | 40.69C | 43.53B | 44.98C |
| ScV | 620C | 188C | 80C | 888C | 1.00C | 3.64A | 0.25BC | 1.59C | 47.77B | 56.58A | 56.48A |
| ScVI | 86D | 172C | 80C | 338D | 9.54A | 3.75A | 0.27B | 4.50A | 54.36A | 53.17A | 58.23A |
| 2017–18 | |||||||||||
| ScI | 1878A | 462A | -NA- | 2340A | 0.35C | 1.28B | -NA- | 0.57E | 37.54C | 39.20B | 41.02C |
| ScII | 1677B | 452A | 161A | 2290A | 0.41C | 1.57B | 0.46B | 0.71D | 45.67AB | 40.40B | 53.97B |
| ScIII | 1474C | 412A | 160A | 2046B | 0.40C | 1.63B | 0.28C | 0.73D | 36.56C | 43.87B | 47.94BC |
| ScIV | 110E | 407A | 161A | 678D | 7.19B | 1.60B | 0.28C | 2.37B | 40.80B | 43.27B | 49.35B |
| ScV | 950D | 226B | 72B | 1248C | 0.67C | 2.93A | 0.70A | 1.25C | 49.08A | 55.08A | 62.44A |
| ScVI | 84E | 225B | 72B | 381E | 9.68A | 3.02A | 0.73A | 4.42A | 52.50A | 56.58A | 64.81A |
aRefer Table 5 for scenario description.
bMeans followed by a similar uppercase letter(s) within a column are not significantly different at 0.05 level of probability using Tukey’s HSD test.
cNot applicable.
Note: Rainfall (mm) Rice: 433 (2016), 567 (2017); Maize: 433 (2016), 547 (2017); Wheat: 188 (2016–17), 170 (2017–18); Mungbean: 121 (2017), 76 (2018).