Fifty years ago, the world wheat market used to be rather simple to follow. The U.S. accounted for more that 50 percent of world wheat exports, and the rest was split between Canada, Australia and Argentina. Moreover, governments controlled a great majority of wheat exports. Government agencies such as the Canadian Wheat Board (CWB), the Australian Wheat Board (AWB) and the Argentine Junta sold to world buyers directly or through agents. U.S. wheat exports were subsidized by the U.S. government, and other government aid and credit programs generated a majority of U.S. wheat exports.Today's world wheat trade is much more diverse and dispersed. "Non-traditional" origins, such as the EU, Russia, Ukraine, Turkey and Kazakhstan, among others,...