The top leaders in both parties on the House and Senate Agriculture committees have agreed to a one-year extension of the 2008 farm bill that expired in October, a move that could head off a possible doubling of milk prices next month.

Senate Agriculture Committee Chairman Debbie Stabenow, D-Mich., indicated the House could vote on the bill soon, though House leaders have not yet agreed to put the bill on the floor. In addition to the one-year extension that has the backing of the committees, the House GOP is also considering two other extension bills: a one-month extension and an even smaller bill to extend dairy policy that expires Jan. 1.

Expiration of those dairy programs could mean higher prices at the grocery store within a few weeks. Agriculture Secretary Tom Vilsack said Americans face the prospect of paying $7 for a gallon of milk if the current dairy program lapsed and the government returned to a 1948 formula for calculating milk price supports.

A spokesman for House Speaker John Boehner said Sunday that Republican leaders had not decided how they would proceed on the farm extension. Boehner has pushed back on passage of a new five-year farm bill for months, saying there were not enough votes to bring it to the House floor. The Senate passed a farm bill in June.