South Korea's business sentiment for September fell from a month earlier due to growing uncertainties sparked by worries over a U.S. double-dip recession and the persistent eurozone debt crisis, a poll showed Monday. The monthly business survey index (BSI) for the upcoming month came in at 96.3, down from the 98.9 forecast for August, according to the survey by the Federation of Korean Industries (FKI), the lobbying group of the country's large businesses.