On a relative (percentage) basis, the biggest change in a U.S. grain or oilseed supply/demand estimate was for grain sorghums. However, perhaps the most closely watched of all of USDA's February numbers are those for South American soybean production.Seldom does USDA's February WASDE contain revisions in world production, supply/demand estimates or ending stocks that alter the market. Today's February 2015 WASDE is no exception. Almost all of the changes were at the margins. If today's report had any kind of a market bias at all, it was very mildly bullish, at least for U.S. grains and soybeans. USDA projected increases in corn used for ethanol, soybean exports and crush as well as subsequent decreases in ending stocks for both that were sl...