US corn prices have increased by 4 cents overnight, driven by active fund buying and late spring forecasts. This trend is seen in soybeans, CBOT and Minneapolis wheat, as well as in the Dalian Commodity Exchange in China and the MATIF exchange in Europe. The Iowa Renewable Fuels Association has announced the renewal and expansion of the Biodiesel Farm Credit Program, providing $45,000 to Iowa farmers who use biodiesel, in an effort to incentivize the use of this renewable fuel.