Corn for Silage 2007 acres Yield and Production Distircts Harvested Yield Production 10 31,300 14.9 446,500 20 19,000 17.8 337,600 30 30,200 17.0 513,400 40 32,100 16.6 533,800 50 21,100 17.3 365,100 60 14,100 18.2 256,800 70 5,900 15.8 93,200 80 7,600 14.6 111,100 90 8,700 14.7 127,500