USDA ORANGE JUICE YIELD ESTIMATE The U.S. Agriculture Department projected an average yield of 1.47 gallons of frozen concentrated orange juice per box (42.0 degree brix equivalent) from Florida's 1986/87 crop. That compares with 1.46 gallons per box previously and 1.38 gallons per box from the 1985/86 crop. The crop reporting board said the estimates for the 1986/87 season are based on maturity and yields tests as of March 1.