The Congressional Research Service report on the expiring 2014 farm bill explains that programs expire on September 30 or December 31, depending on funding source and crop year. The House and Senate passed differing versions, and conference talks have not reached agreement.
The report clarifies that most commodity support continues through crop years, limiting immediate price effects, though dairy's December 31 expiration is the first to bite and could affect milk-linked feed demand.
After 136 past neutral report events, Milk (Class III) moved a median -0.1% over 5 sessions (43% higher; middle half -0.7% to +0.5%), and -0.3% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.