Acres of propane burn post-harvest residue management used by Willamette Valley
grass seed growers for each species in 1992-2001.

Propane burn acres
Species 19921 19932 19943 19954 19965 19976 19987 19998 20009 200110
Bluegrass 201 94 227 167 213 121 29 31 56 79
Bentgrass 1,116 534 98 90 60 0 15 54 77 67
Fine fescue 1,564 791 528 71 75 267 319 63 130 212
Orchardgrass 219 27 5 10 10 3 0 0 0 0
Per. ryegrass 18,775 12,440 6,318 2,900 2,642 1,135 2,260 1,167 1,228 816
Tall fescue 5,345 1,717 1,528 774 813 1,215 1,410 549 409 302
Ann. ryegrass 760 197 172 23 172 160 0 75 194 151
TOTAL 27,980 15,800 8,876 4,035 3,985 2,901 4,033 1,939 2,094 1,627

  11992 final data reported as of December 14, 1992
  21993 final data reported as of January 12, 1994
  31994 final data reported as of January 4, 1995
  41995 final data reported as of December 4, 1995
  51996 final data reported as of December 16, 1996
  61997 final data reported as of December 4, 1997
  71998 final data reported as of March 23, 1999
  81999 final data reported as of January 31, 2000
  92000 final data reported as of June 4, 2001
102001 final data reported as of February 15, 2002