By Ellie Ismailidou, MarketWatch

NEW YORK (MarketWatch) -- Treasury prices fell Monday, sending yields higher and ending the longest winning streak in three months.

With little in the way of market-moving economic data, and Federal Reserve policy makers entering a "blackout" period ahead of the central bank's monetary policy meeting next week, investors weighed the impact of Chinese stimulus against continued worries about Greece's finances on the Treasury market.

The People's Bank of China's new program, which will permit Chinese banks to lend more money, increased investors' appetite for risky assets like stocks and pushed them out of Treasurys.

Bond yields move inversely to prices, declining as prices rise.

The announcement had a "psychological influence" in the Treasury market, considering how great a portion of global growth stems from China, said Guy LeBas, chief fixed income strategist at Janney Montgomery Scott, in a note.

But that enthusiasm for riskier assets was tempered by news about Greece, including reports that the Greek government has ordered state agencies, pension funds and local government entities to transfer their cash reserves to the central bank (http://www.marketwatch.com/story/greece-orders-local-agencies-to-transfer-cash-to-central-bank-reports-2015-04-20).

The Treasury market "has been trading with the [Greek debt crisis] in the background for over a year...It is a week-to-week conversation that the markets keep pricing in," said Tom Tucci, head of Treasury trading at CIBC World Markets Corp.

The next meeting of eurozone finance ministers, known as the Eurogroup, is Friday, but that is not a "drop-dead deadline" but rather another step in the negotiations between Greece and its creditors, Tucci said.

Greece's next repayment dates are May 1, when it must pay 202 million euro ($217.40 million) to the International Monetary Fund, and May 8, when 1.4 billion euros ($1.51 billion) in Treasury bills mature. Another 771 million euros ($829.78 billion) is to be repaid to the IMF on May 12.

Last week, bond investors sought U.S. Treasurys and dumped Greek bonds on news that Greece missed its budget targets for 2014 (http://www.marketwatch.com/story/greece-misses-budget-targets-for-2014-2015-04-16). The 10-year benchmark Greek bond yield reached a 29-month high of 13.022% on Friday and continued to climb on Monday, jumping another 57.7 basis points to 13.602%.

Aside from Greece, the last Fed speaker comments (http://www.marketwatch.com/story/feds-dudley-has-last-word-and-its-meant-to-be-soothing-2015-04-20)before the blackout -- which means there now will be no more comments until after next week's meeting -- did not give the market a clear direction, as New York Fed President William Dudley expressed no urgency to raise interest rates (http://www.marketwatch.com/story/feds-dudley-has-last-word-and-its-meant-to-be-soothing-2015-04-20).

There is likely to be less intrigue ahead of the coming Fed meeting than is typically the case, Ward McCarthy, chief financial economist at Jefferies, said in a note.

As the Fed has signaled a "data-dependent" approach to increasing interest rates, the market is still digesting last week's economic data releases which "were mixed, but could again be characterized with the now-familiar story of not measuring up to expectations," McCarthy said.

One of the mysteries of the past half year has been the sluggish response of consumer spending to lower gasoline prices, Goldman Sachs economists said in a report dated Friday. Consumers have been pocketing savings from lower prices at the pump, rather than spending it.

"We expect that consumers will open their wallet a bit more in Q2, contributing to a pickup in growth," the report said.

On balance, the yield on the benchmark 10-year Treasury note rose 4.9 basis points to 1.897% on Monday, according to Tradeweb.

The yield on the two-year note increase 2.4 basis points to 0.528%. The 30-year bond yield rose 4.8 basis point to 2.553%.

Subscribe to WSJ: http://online.wsj.com?mod=djnwires