It will now take more than a record yield per acre to again start talking about 2014-15 corn ending supplies exceeding 1.5-1.6 billion bushels.We've gone from wondering what we were going to do with the massive increase in corn ending supplies and how many years corn would be cheap to now starting to express a little concern about the importance of another big corn yield in 2014. It has all transpired since the unexpectedly small 1 December corn stocks number that was confirmed with the 1 March quarterly stocks number released on 31 March. The last somewhat bullish inputs were the large increase in the export forecast and greater-than-expected reduction in corn ending supplies in Wednesday's USDA WASDE.In an analysis last month on the poten...