"Endophyte Toxins in Grass Seed Fields and Straw. EM 8598. August, 2003."
Endophyte levels for some Oregon grown grasses are available on a list prepared by three Oregon State University Extension Crop Science faculty. The list was updated in 2006.
"Haymaking on the westside. EB 1897." A publication on conserving hay in western Washington and western Oregon written by Steven Fransen and Michael Hackett of Washington State University.
Purchasing weed free hay or straw: Questions often come from horse owners who are heading to camping areas that require certified weed free forage for the animals. The Oregon Department of Agriculture does the certification and also has a list of sellers.
"Oregon Grass Straw" - an affordable forage resource for winter feeding programs. 1999. Randy Dovel, Tim DelCurto and Gene Pirelli. Available only from the Polk County Extension office.
Agriculture Fiber Association publication. Available only from the. Please call to ask for a copy.