The November WASDE's surprising increase in the estimated U.S. national average corn yield warrants a fresh look at the nation's supply/demand dynamics.As noted here at the time, the biggest surprise in the November WASDE was the increase in the estimated U.S. national average corn yield when the widely-held assumption was that there would be a slight reduction. Furthermore, the increase of 1.9 bushels/acre from October was not minor. At 175.3 bushels/acre, the new estimate tops the old record-high yield set in 2014/15 by an extraordinary 4.3 bushels/acre! In analyzing the 2016/17 U.S. corn crop, NASS’s yield estimates have so far fallen in a very unusual pattern. The first survey-based estimate in August was 175.1 bushels/acre, which was f...