Table 3 Comparison of our crop water use (CWU) estimates with Chiarelli et al.24 for a set of selected crops.
Crop (with * if perennial) | Rainfed production | Irrigated production | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Average CWU (mm) | Matching cells | Spatial correlation | Median of differences | Average CWU (mm) | Matching cells | Spatial correlation | Median of differences | |||
Our study | Chiarelli et al. | Our study | Chiarelli et al. | |||||||
Wheat | 331 | 589 | 75.1% | 0.38 | −41.5% | 406 | 778 | 86.5% | 0.36 | −46.2% |
Maize | 367 | 434 | 82.3% | 0.36 | −18.7% | 461 | 627 | 89.1% | 0.64 | −27.1% |
Rice | 370 | 885 | 63.9% | 0.11 | −54.9% | 562 | 935 | 90.3% | 0.16 | −35.5% |
Barley | 214 | 493 | 75.6% | 0.09 | −52.8% | 325 | 455 | 85.0% | 0.59 | −28.1% |
Sorghum | 396 | 406 | 78.8% | 0.55 | −6.6% | 549 | 638 | 80.4% | 0.66 | −12.2% |
Soya bean | 394 | 450 | 81.7% | 0.50 | −12.6% | 471 | 634 | 88.8% | 0.68 | −23.9% |
Potato | 350 | 329 | 71.3% | 0.63 | +5.9% | 453 | 568 | 85.1% | 0.63 | −20.9% |
Sugar cane* | 755 | 872 | 68.3% | 0.66 | −11.9% | 1192 | 1291 | 89.7% | 0.73 | −6.7% |
Oil palm* | 908 | 1020 | 80.9% | 0.60 | −8.8% | 1153 | 1532 | 44.2% | −0.32 | −26.4% |
Ground nut | 412 | 397 | 75.2% | 0.65 | +6.0% | 495 | 573 | 71.4% | 0.60 | −9.7% |
Grapes* | 353 | 498 | 42.6% | 0.59 | −31.5% | 541 | 708 | 29.1% | 0.73 | −27.6% |
Cotton | 502 | 497 | 64.2% | 0.47 | −1.0% | 696 | 842 | 89.9% | 0.59 | −15.5% |
Coffee* | 647 | 960 | 79.9% | 0.43 | −30.9% | 824 | 1237 | 67.1% | 0.37 | −29.0% |
Average | 72.3% | 0.46 | −19.9% | 76.7% | 0.49 | −23.8% | ||||
