Table 6.
Effect of furrow irrigation systems and irrigation levels on water use efficiency.
| Water use efficiency indicators |
|||||||
|---|---|---|---|---|---|---|---|
| ETc |
Yield |
Gross |
Xp |
CWUE |
FWUE |
FWEE |
|
| Treatments | (mm) | (kg ha−1) | irrigation (mm) | (mm) | (kg m−3) | (kg m−3) | (kg m−3) |
| CFI 100%ETc | 401.91 | 7989.36 | 492.52 | 552.12 | 1.99d | 1.62e | 1.45b |
| CFI 75%ETc | 301.43 | 5556.35 | 330.87 | 405.51 | 1.84e | 1.68d | 1.36d |
| CFI 50%ETc | 200.96 | 5012.21 | 178.85 | 291.48 | 2.49a | 2.80a | 1.72a |
| AFI 100%ETc | 401.91 | 7118.04 | 492.52 | 566.36 | 1.77f | 1.45g | 1.26e |
| AFI 75%ETc | 301.43 | 5474.41 | 330.87 | 431.33 | 1.82e | 1.65de | 1.27e |
| AFI 50%ETc | 200.96 | 4414.05 | 178.85 | 305.80 | 2.20b | 2.47b | 1.44b |
| FFI 100%ETc | 401.91 | 5908.12 | 492.52 | 561.67 | 1.47h | 1.20h | 1.05g |
| FFI 75%ETc | 301.43 | 4953.84 | 330.87 | 425.15 | 1.64g | 1.50f | 1.17f |
| FFI 50%ETc | 200.96 | 4234.84 | 178.85 | 300.73 | 2.11c | 2.37c | 1.41c |
| LSD (0.05) | 0.04 | 0.05 | 0.03 | ||||
| CV (%) | 1.29 | 1.46 | 1.18 | ||||
*Means which had the same letters in the column are no significant differences at P < 0.05. XP is water expense, CWUE is crop water use efficiency, FWUE is field water use efficiency, FWEE is field water expense efficiency, LSD is the least significant difference and CV is coefficient of variation.