Winnipeg canola experienced a flat Monday, closing at $462.70 per tonne, up 20 cents.Canola experienced its largest swings soon after trading began, moving up $4 and then down $10, but it quickly moved back to tight range near the opening value and stayed there for the rest of the day.General market malaise kept trading quiet, while concerns about harvest conditions kept canola prices firm but not strong.Soybeans and corn were also dull on the day, with Chicago December corn rising four cents per bushel and November soybeans down three cents.Oats were relatively flat on the close.Wheat was the strongest of the main prairie and Midwest crops, with hard red winter wheat futures in Kansas City rising about 10 cents. Spring wheat rose seven to eight cents and winter wheat rose about nine cents.Crude oil weakened 95 cents to $74.22 and the Canadian dollar fell to 94.5 cents to the U.S. dollar.American stock markets slumped, with the Dow Jones Industrial Average falling 1.4 percent to 10,009 while the TSX eked out a tiny gain of 0.13 percent to 11,895.