Soy falls 1 pct, China move raises demand fears

* China central bank move weighs on commodity complex * Corn sets new peak early, fundamentals still supportive * Profit-taking seen ahead of long weekend (Recasts, updates with U.S. trading, fresh analysts' comments, previous dateline LONDON) By Rod Nickel WINNIPEG, Manitoba, Feb 18 (Reuters) - Soybeans fell on Friday, heading for their third weekly loss in four weeks, after the world's

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