WASHINGTON - The Treasury Department's plans to issue more than $1 trillion in Treasury securities in fiscal 2009 to help raise revenues for the financial rescue plan are likely to further the recent pronounced move of municipal bond yields above Treasury yields, market participants say.

Facing mounting bills from the Troubled Asset Relief Program and other federal rescue measures, the Treasury has announced it will auction certain government securities more frequently, and will auction $25 billion of newly resurrected three-year notes today.

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