The shutdown came just as the current farm bill expired. Farm subsidies remain intact for fall crops currently being harvested. Crop insurance, funded under a permanent authorization, is mostly unaffected.
The expiration of the law won't have an impact until the end of the year, when some dairy supports end and milk prices are expected to rise sharply.
Congress has been debating the new farm bill for more than two years, but a resolution has likely taken a back seat.
"Farmers, all of those impacted, have been waiting and waiting and waiting. And frankly have had enough," said Senate Agriculture Chairwoman Debbie Stabenow, D-Mich., last week. "They want this to get done."
Associated Press writers Mary Clare Jalonick in Washington, D.C., M.L. Johnson in Milwaukee and Kelly P. Kissel in Little Rock, Ark., contributed to this report.