The lira depreciated 0.4 percent to 1.7491 per dollar at 5:57 p.m. in Istanbul, heading for the biggest drop since Feb. 10. Yields on two-year benchmark bonds slipped to the lowest since Oct. 19, down 14 basis points, or 0.14 percentage point, to 9 percent, according to the Turk Ekonomi Bankasi AS index.