Corn prices rose after falling for 3 straight sessions as traders bought contracts in anticipation that new crop estimates from USDA, to be released on Monday, would show fewer corn acres harvested in 2014, potentially reducing U.S. production from the 14.407 bilbu estimated in November, to 14.366 billion bushels. Prices also were supported by fresh signs of demand for the grain, with the USDA announcing corn sales on Friday totaling 136k mt to SKorea.