Table 4 Global annual results for crop for the year 2000 and comparison against Siebert and Döll7.
From: The green and blue crop water requirement WATNEEDS model and its global gridded outputs
Crop list | Data | WATNEEDS results | Data from Siebert and Doll (2010) | ||||
|---|---|---|---|---|---|---|---|
Area [Mha] | Percentage irrigated | Total Green Water [km3] | Total Blue Water [km3] | Percentage green water in irrigated area | Green Water [km3] | Blue Water [km3] | |
Wheat | 214.4 | 31% | 692.6 | 197.1 | 19% | 650 | 208 |
Maize | 151.3 | 20% | 627.2 | 76.3 | 15% | 585 | 72 |
Rice | 164.9 | 62% | 636.3 | 272.8 | 53% | 634 | 307 |
Barley | 55.1 | 8% | 155.1 | 10.2 | 6% | 150 | 11 |
Rye | 10.4 | 4% | 39.2 | 1.0 | 3% | 12 | 1 |
Millet | 33.6 | 5% | 118.3 | 4.0 | 4% | 132 | 4 |
Sorghum | 40.1 | 9% | 164.2 | 10.7 | 6% | 173 | 11 |
Soybeans | 74.8 | 8% | 380.9 | 14.0 | 6% | 382 | 17 |
Sunflower | 20.8 | 6% | 77.0 | 3.9 | 5% | 68 | 4 |
Potatoes | 19.7 | 19% | 61.5 | 12.7 | 14% | 61 | 14 |
Cassava | 23.1 | 0% | 131.1 | 0.0 | 0% | <0,05 | <0,05 |
Sugar cane | 20.7 | 49% | 162.2 | 65.1 | 42% | 173 | 69 |
Sugar beets | 6.2 | 25% | 21.1 | 8.4 | 16% | 20 | 9 |
Oil palm | 9.6 | 0% | 99.7 | 0.0 | 0% | 117 | 0 |
Rapeseed | 24.6 | 14% | 56.8 | 6.7 | 8% | 51 | 8 |
Groundnuts | 22.7 | 16% | 84.7 | 7.3 | 15% | 90 | 8 |
Pulses | 67.0 | 8% | 170.6 | 21.9 | 4% | 173 | 22 |
Citrus | 7.4 | 47% | 42.6 | 21.5 | 37% | 46 | 23 |
Date palm | 0.9 | 79% | 2.0 | 10.6 | 70% | 2 | 11 |
Grapes | 7.1 | 24% | 26.8 | 7.1 | 19% | 25 | 7 |
Cotton | 33.1 | 49% | 127.0 | 85.4 | 35% | 131 | 84 |
Cocoa | 6.7 | 0% | 60.4 | 0.0 | 0% | 66 | <0,05 |
Coffee | 10.1 | 2% | 95.8 | 1.0 | 1% | 102 | 1 |
Others perennial | 72.9 | 18% | 475.5 | 81.3 | 11% | 515 | 84 |
Fodder grasses | 104.5 | 11% | 567.0 | 91.8 | 8% | 576 | 90 |
Others annual | 108.3 | 18% | 338.0 | 57.5 | 11% | 344 | 62 |
Total | 1310 | 20% | 5414 | 1068 | 16% | 5278 | 1126 |
