WASHINGTON ­— Treasury yields pulled back from four-month highs on Monday as economic worries resurfaced.

A gauge of manufacturing in New York state sank to its lowest level since April 2009, the latest in a string of weak manufacturing reports. The Empire State Manufacturing Survey showed a drop in employment and orders for goods this month.

The yield on the 10-year Treasury note fell to 1.84 percent, down from a four-month high of 1.87 percent reached Friday. The price rose 28 cents for every $100 invested.

Weak economic reports often send traders into the Treasury market, and rising demand for bonds pushes their yields down.

The long-simmering European debt crisis also lured traders into the market.

In other Treasury trading, the 30-year bond jumped $1.03 for every $100 invested. The yield fell to 3.03 percent, down from a four-month high of 3.09 percent hit late Friday. The two-year Treasury yield declined to 0.25 percent from 0.26 percent. In the market for short-term bills, the three-month T-bill paid a yield of 0.09 percent.