The August WASDE was filled with surprises compared with general expectations ahead of its release, and almost all either directly or indirectly concerned USDA’s yield estimates. Headlining the surprises, at least in the market’s eyes, were the estimated record-high U.S. corn yield of 178.4 bushels/acre (BPA) and the near-record U.S. soybean yield of 51.6 BPA. Both estimates are roughly 2 BPA higher than the average pre-report trade consensus and were based on the first crop surveys of the season. That 2 BPA gap is also significant, evidenced by the sharply bearish reaction of futures market prices last Friday. Perhaps USDA’s big corn and soybean yield estimates should not have been quite so unexpected in hindsight. The w...