Analysts said although weekly export sales figures reported in the previous session were weak, interest in U.S. supplies from buyers like South Korea has been picking up, contributing to Friday's bounce in prices. corn's previous 3-day fall also triggered a wave of short-covering by investors, lifting prices. Soybean prices also climbed by continued strong sales to overseas buyers and concerns over dryness in S America. Although Brazil's crop agency, Conab,raised projections for the country's soy production Friday, analysts said intensifying dryness there could still stymie crop growth, denting global supplies.