Table 5 Comparison of unit WF for 15 main crops to other global studies7,35 in cubic meters per tonne (m3/ton).
From: A global dataset of the national green and blue water footprint of livestock feeds
Crops | This study | Mialyk et al. | Mekonnen and Hoekstra | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
GWF | BWF | GWF | BWF | ∆ GWF | ∆ BWF | GWF | BWF | ∆ GWF | ∆ BWF | |
Barley | 925 | 50 | 569 | 20 | −38% | −59% | 1213 | 79 | −24% | −37% |
Cassava | 393 | 0.6 | 399 | 0 | 2% | −72% | 550 | 0.0 | −28% | 0% |
Groundnuts | 2413 | 179 | 2553 | 36 | 6% | −80% | 2469 | 150 | −2% | 19% |
Maize | 880 | 72 | 647 | 27 | −26% | −63% | 947 | 81 | −7% | −12% |
Millet | 4572 | 63 | 3204 | 7 | −30% | −89% | 4307 | 57 | 6% | 11% |
Potatoes | 162 | 37 | 140 | 16 | −14% | −57% | 191 | 33 | −15% | 12% |
Rapeseed | 1528 | 101 | 1244 | 34 | −19% | −67% | 1703 | 231 | −10% | −56% |
Rice | 1230 | 299 | 892 | 253 | −28% | −15% | 1146 | 341 | 7% | −12% |
Seed cotton | 2374 | 936 | 1770 | 695 | −25% | −26% | 2282 | 1306 | 4% | −28% |
Sorghum | 3238 | 26 | 2977 | 11 | −8% | −57% | 2857 | 103 | 13% | −74% |
Soybean | 2118 | 35 | 1486 | 3 | −30% | −92% | 2037 | 70 | 4% | −50% |
Sugarbeet | 65 | 27 | 50 | 15 | −24% | −43% | 82 | 26 | −21% | 3% |
Sugarcane | 118 | 35 | 107 | 29 | −9% | −17% | 139 | 57 | −15% | −39% |
Sunflower seed | 2582 | 63 | 1998 | 29 | −23% | −54% | 3017 | 148 | −14% | −57% |
Wheat | 1080 | 245 | 841 | 122 | −22% | −50% | 1277 | 342 | −15% | −28% |
