Oilseed flax production, grass-fed beef, and the Conservation Security Program are among the topics featured in Practical Farmers of Iowa\u27s (PFI) 2005 field day schedule. PFI celebrates 20 years of farmer-driven research and outreach with a special anniversary field day at the farm of Ron and Maria Rosmann, Harlan, on June 30. The Rosmanns, longtime sustainable agriculture leaders in Iowa, will showcase their diversified farming operation and will host Dick Thompson, PFI co-founder, and George DeVault, past editor of New Farm magazine