China removed the import duties on U.S. sorghum last week, and that gave the corn market a real lift. It has been importing U.S. sorghum since the flap over the unapproved Syngenta corn hybrid started several years ago. While the removal of these duties was important to the market from a psychological standpoint, there should not be too much read into it from a purely fundamental standpoint for the following reasons:

The U.S. sorghum crop is very small. Production totaled 364 million bushels (9.2 MMT) in 2017 and is forecast at 343 million bushels (8.7 MMT) this year compared with corn production of 335 MMT. U.S. sorghum export sales to China for this marketing year total 4.5 MMT with 4.3 MMT of that already shipped. Nevertheless, China...