Soybeans increased for the second straight day on Wednesday amid concerns that planting in the world's largest exporter of the commodity, the U.S., may be delayed as about 2% of U.S. crop were due on May 5 compared to 22% last year. Soybeans for July delivery added 0.6% to $13.90 a bushel and were traded at $13.895 at 11:13 a.m. in Singapore.