Mar.30 (Bloomberg) --Copper in London fell, putting it on track for its worst quarterly performance in three quarters, on concern global economic growth may slow after Japan’s worst earthquake on record and as China extends tightening measures.

The metal for three-month delivery on the London Metal Exchange lost as much as 0.2 percent to $9,569 a metric ton, and traded at $9,570 by 8:06 a.m. Singapore time. It is down 0.3 percent since the start of the year.