Mt/ha | Africa | Asia | Western Europe | Central America | Vietnam |
Maize | 2 | 5 | 9.4 | 2.9 | 4.2 |
Rice (paddy) | 2.5 | 4.4 | 5.9 | 3.6 | 3.6 |
Wheat | 2.4 | 3 | 7.4 | 5.6 | 5.6 |