Table 2. Crop-related summary of estimations and irrigated areas.
| CROP | I [km3] | PS [km3] | AEI [106 ha] | CI |
|---|---|---|---|---|
| Rice | 271.4 | 360.1 | 64.0 | 1.6 |
| Wheat | 153.1 | 44.3 | 59.3 | 1.1 |
| Maize | 66.0 | 48.7 | 29.9 | 1.0 |
| Others annual | 51.8 | 19.8 | 16.7 | 1.2 |
| Cotton | 73.3 | 21.2 | 16.3 | 1.0 |
| Others perennial | 80.0 | 48.5 | 12.9 | 1.0 |
| Fodder grasses | 71.8 | 14.5 | 11.7 | 1.0 |
| Sugar cane | 71.7 | 50.9 | 10.2 | 1.0 |
| Soybean | 16.6 | 15.3 | 6.0 | 1.0 |
| Pulses | 18.0 | 2.8 | 5.5 | 1.0 |
| Barley | 7.3 | 4.1 | 4.6 | 1.0 |
| Potato | 12.4 | 5.8 | 3.7 | 1.0 |
| Groundnuts | 7.5 | 9.6 | 3.7 | 1.0 |
| Citrus | 15.1 | 12.2 | 3.6 | 1.0 |
| Rape seed | 6.7 | 0.5 | 3.4 | 1.0 |
| Sorghum | 8.0 | 3.4 | 3.4 | 1.0 |
| Millet | 3.5 | 1.9 | 1.7 | 1.0 |
| Grapes | 7.4 | 4.0 | 1.7 | 1.0 |
| Sugar beets | 6.1 | 0.89 | 1.6 | 1.0 |
| Sunflower | 3.6 | 1.8 | 1.3 | 1.0 |
| Date palm | 8.4 | 0.14 | 0.7 | 1.0 |
| Rye | 0.74 | 0.68 | 0.4 | 1.0 |
| Coffee | 0.67 | 0.83 | 0.2 | 1.0 |
| Cocoa | 0.01 | 0.06 | 0.01 | 1.0 |
| Cassava | 0.02 | 0.03 | 0.01 | 1.0 |
| Oil palm | 0.04 | 0.11 | 0.01 | 1.0 |
I: Irrigation requirement; PS: Precipitation surplus; AEI: Areas equipped for irrigation; CI: Cropping intensity, i.e. the number of yearly growing seasons per field (CI>1 for crops harvested more than once per year on the same fields, like rice in northern India). Rice’s requirement does not include additional amounts of water to saturate the fields before sowing (globally 206.2 km3).