Large production increases and limited demand growth lead to enlarging stocks, and that is what is happening to world wheat supplies as well as those of the important competing exporting countries.On 18 December, the Chicago March wheat contract traded at a high of $6.565. The price has headed almost straight downhill since then. On the charts, futures market prices never move in straight lines. Since 18 December, however, the price decline of the lead contract in the principal U.S. wheat futures shows up on charts in just about as straight a line as futures market price action ever produces. At last look, Chicago March wheat was at $5.32, down almost $1.25 in less than a month. The pattern for KC hard red winter wheat futures has been near...