March 22 (Reuters) - Canada's main stock index opened sharply lower on Thursday, weighed down by energy stocks as oil prices dropped and on fears that the United States' plans to impose import tariffs on China could kindle a global trade war.
* At 9:34 a.m. ET (1334 GMT), the Toronto Stock Exchange's S&P/TSX Composite Index .GSPTSE fell 120.81 points, or 0.77 percent, to 15,554.47.