Table 4.
Effect of silicon on the yield and its components and water use efficiency of the maize cultivars under irrigation water salinity during 2019-20 and 2020-21 seasons.
| Treatments | Total biomass (t ha-1) | Stover yield (t ha-1) | Cob dry weight (t ha-1) | Grain yield (t ha-1) | ||||
|---|---|---|---|---|---|---|---|---|
| 2019-20 | 2020-21 | 2019-20 | 2020-21 | 2019-20 | 2020-21 | 2019-20 | 2020-21 | |
| Salinity (mg L-1) | ||||||||
| 1000 | 26.40 a | 25.11 a | 15.37 a | 14.76 a | 11.03 a | 10.35 a | 8.36 a | 8.47 a |
| 2000 | 22.35 b | 21.27 b | 13.60 b | 13.06 b | 8.74 b | 8.21 b | 7.23 b | 7.43 b |
| 3000 | 18.01 c | 17.17 c | 11.71 c | 11.24 c | 6.29 c | 5.92 c | 5.64 c | 5.82 c |
| LSD | 1.70 | 1.60 | 1.14 | 1.09 | 1.657 | 1.538 | 0.405 | 0.415 |
| Maize cultivars | ||||||||
| ES 81 | 22.45 a | 21.37 a | 13.77 a | 13.22 a | 8.67 a | 8.14 a | 7.16 a | 7.33 a |
| ES 83 | 22.12 a | 21.05 a | 13.33 a | 12.80 a | 8.79 a | 8.25 a | 6.97 a | 7.14 a |
| ES90 | 22.20 a | 21.13 a | 13.59 a | 13.04 a | 8.60 a | 8.08 a | 7.09 a | 7.26 a |
| Silicon application (kg ha-1) | ||||||||
| 0 | 20.07 c | 19.12 c | 12.44 c | 11.94 c | 7.63 c | 7.17 c | 5.83 c | 5.97 c |
| 1 | 22.39 b | 21.31 b | 13.66 b | 13.11 b | 8.73 b | 8.20 b | 7.46 b | 7.64 b |
| 2 | 24.30 a | 23.12 a | 14.59 a | 14.01 a | 9.70 a | 9.11 a | 7.94 a | 8.12 a |
| LSD | 0.948 | 0.903 | 0.675 | 0.648 | 0.478 | 0.445 | 0.145 | 0.149 |
Values in the column with identical letter(s) do not substantially differ at the 5% level of probability.