The CBOT posted a decisive Turnaround Tuesday with the soy complex, corn, and wheat all turning sharply higher and scoring bullish days on the charts. The odd thing was that the day’s rally came without clear fundamental justification, with the only really bullish story being Argentina’s heatwave over the next two weeks. That seemed to spark short covering and end-user demand in soymeal, which spilled over into soybeans and perhaps the corn market as well. The other sentiment reflected in market chatter is the idea that commodity values are “cheap” relative to fundamentals, though WPI does not subscribe to this theory.  Tuesday’s rally puts the markets at an interesting crossroads. Technically, the day&rs...