Features- Biodiesel with altitude; Co-op completes purchase of Virginia turkey plant; 27 co-ops among recipients of USDA funding; Rabobank proposal sparks debate on FCS role; Four leaders selected for Co-op Hall of Fame; Co-ops help keep rural towns alive; USDA providing $6.3 million in grants for rural co-op development; Survey shows dairy co-ops in generally strong financial state; 1890s Land Grant Institutions use USDA funds to promote business growth