* TSX ends down 75.14 points, or 0.52 percent, at 14,339.53
* Seven of the TSX’s 10 main groups fall
TORONTO, Aug 12 (Reuters) - Canada’s main stock index ended lower on Wednesday as banks, fertilizer and railway shares dropped amid a broad retreat as China’s yuan currency weakened further.
The Toronto Stock Exchange’s S&P/TSX composite index unofficially closed down 75.14 points, or 0.52 percent, at 14,339.53. Seven of the 10 main groups fell. (Reporting by Alastair Sharp; Editing by Peter Galloway)