The surprise in the March WASDE was USDA’s aggressive increase in estimated demand for U.S. corn during the second half of the 2017/18 crop year, raising that for exports by an eye-catching 175 million bushels to 2.225 billion bushels. It also boosted its estimate of corn used for ethanol by 50 million bushels to 5.575 billion bushels. These changes increased the total estimated demand for U.S. corn in 2017/18 to a record 14.820 billion bushels. It was the nearly 9 percent jump in estimated corn exports that captured the most attention, which could likely be the biggest such increase ever in a March WASDE. The new number drew immediate skepticism from many observers who have seen U.S. corn export sales and shipments lag badly since t...