Table 5 Comparison of crop water use (CWU) estimates between local studies and corresponding values in our study for eight crops.
Crop (with * if irrigated) | Country | Location | Period(s) | CWU difference | Reference | |
|---|---|---|---|---|---|---|
1 | Rice* | Philippines | 14°14′ N, 121°26′ E | 2008–2009 | −5.3% | |
2 | Rice* | India | 29°43′ N, 76°58′ E | 1994 | −1.9% | |
3 | Rice* | India | 20°26′ N, 85°56′ E | 2015–2016 | +30.8% | |
4 | Rice* | USA | 39°21′ N, 122°05′ W | 2007–2009 | +9.3% | |
5 | Rice* | China | 32°21′ N, 118°68′ E | 2015–2018 | −12.5% | |
6 | Wheat | +16.3% | ||||
7 | Wheat* | China | 39°36′ N, 116°48′ E | 2005–2008 | −2.1% | |
8 | Wheat* | India | 30°56′ N, 75°52′ E | 2006–2008 | +9.1% | |
9 | Maize (corn)* | USA | 36°69′ N, 108°31′ W | 2011–2014, 2017 | +6.1% | |
10 | Maize (corn)* | USA | 41°09′ N, 96°28′ W | 2001–2005 | +9.1% | |
11 | Maize (corn) | +1.3% | ||||
12 | Soya bean* | +3.5% | ||||
13 | Soya bean | −8.9% | ||||
14 | Soya bean* | USA | 33°42′ N, 90°55′ W | 2016 | +13.3% | |
15 | Seed cotton* | Syria | 36°01′ N, 36°56′ E | 2004–2006 | +6.8% | |
16 | Seed cotton* | China | 85°49′ E, 44°17′ N | 2010 | −0.9% | |
17 | Sorghum* | Spain | 39°03′ N, 2°05′ W | 2007, 2010 | −3.1% | |
18 | Sorghum | USA | 36°13′ N, 97°10′ W | 2011–2013 | −0.6% | |
19 | Sorghum* | USA | 29°13′ N, 99°45′ W | 2006–2008 | +28.8% | |
20 | Sugar cane* | Brazil | 20°43′ S, 51°16 W | 2016–2018 | +21.0% | |
21 | Sugar cane* | India | 19°52′ N, 74°58′ E | 2015–2016 | +3.1% | |
22 | Oil palm | Indonesia | 4°16′ S, 105°36′ E | 2017–2019 | −0.4% | |
23 | Oil palm | Malaysia | 01°44′ N, 103°32′ E | 2006 | +0.1% |
