For many decades, sorghum was the Rodney Dangerfield of row crops, it could not get any respect. Over the past three years as total U.S. corn acreage expanded by 1.55 percent, the area planted to sorghum has exploded by 31.8 percent, albeit from a much smaller base number. The increased interest in planting sorghum is drawn from a price that has increased 87 percent in three years, versus 52.7 percent for corn.  Exports generally and China specifically has been the cause of the sorghum price spike. Over half the sorghum crop is exported versus about a quarter of the corn, counting exports in all its forms. That implies greater risk for sorghum if export markets are more volatile than domestic demand. But sorghum also fares well under...