Wheat futures fell 1.8 percent in early trading at the Chicago Board of Trade on Wednesday on pressure from plentiful supplies around the world and a sharp drop in corn prices, traders said. Kansas City Board of Trade hard red winter wheat and Minneapolis Grain Exchange spring wheat also were weak. At 9:37 am CST (1537 GMT), CBOT March soft red winter wheat was down 9-1/2 cents at $5.26-1/4 a bushel.