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. 2017 Jan 12;57:789–801. doi: 10.2135/cropsci2016.06.0553

Table 1.

Percentage of sites in geographical regions providing data for 27th to 34th Elite Spring Wheat Yield Trials.

Geographical region Percentage
Eastern and Southeastern Africa 12.9
North Africa 7.1
West Asia 19.0
South Asia 21.8
East Asia 3.4
North America 9.9
South and Central America 12.9
Eastern Europe 7.5
Western Europe 5.4