WASHINGTON — In its initial report for the new season, the U.S. Department of Agriculture on Nov. 8 forecast 2013-14 U.S. orange production at 7,960,000 tons (183 million boxes), down 5% from 8,349,000 tons in 2012-13.

The U.S.D.A. forecast Florida orange production at 5,625,000 tons (125 million 90-lb boxes), down 6% from 6,013,000 tons in 2012-13. The Florida crop was reduced by early-season dry conditions and ongoing citrus greening, a disease that causes fruit to fall from trees prematurely and reduces fruit size. If realized, the Florida crop would be the smallest since the freeze-reduced crop of 1989-90.

New York frozen concentrated orange juice futures jumped about 6% following the U.S.D.A. report.

Florida’s frozen concentrated orange juice yield was forecast at 1.60 gallons per box at 42.0 degrees Brix, up 1% from last season’s final yield of 1.59 gallons, the U.S.D.A. said.

The California orange crop was forecast at 2,260,000 tons (56.5 million 80-lb boxes), the same size as a year earlier. The Texas crop was forecast at 75,000 tons (2 million 85-lb boxes), down 1,000 tons from 2012-13.

The initial orange production forecast typically is released by the U.S.D.A. in October, but the October Crop Production report was not issued this year because of the partial federal government shutdown.