 USDA's latest crop production report forecasts South Dakota winter wheat production at 44.5 million bushels, up 35 percent from a year ago. The average winter wheat yield is estimated at 57 bushels per acre, up 10 bushels per acre from a year ago. South Dakota's spring wheat crop is forecast at 33.5 million bushels, up 20 percent from last year. The average spring wheat yield is predicted to be 50 bushels per acre.