91 5-50 1/4 50 193.85 (Ming , 2008 20/80 80/20 80/20 122.9 (Kim , 2004 Pan (2010 1 100 30 140 36 107.9 10 - 8.0 Corn stover 105 2 2.5 1.25 35 - 5.5 3 Datar , 2007