Three years of controlled sheep grazing data was used to determine the use of spotted knapweed (Centaurea maculosa) and Idaho fescue (Festuca idahoensis) south of Bozeman, Montana (45° 36' N; 111° 4' W). Pastures were grazed in mid-June (5-8 days), mid-July (2-6 days), and early September (1-6 days). Three 0.1 ha pastures were grazed by 5 ewes. Permanent transects was established within each pasture; at 1-m intervals the nearest Idaho fescue and spotted knapweed plants were marked to determine use of each species over the course of the grazing periods.
Citations and enhanced abstracts for journals articles and documents focused on rangeland ecology and management. RSIS is a collaboration between Montana State University, University of Idaho, and University of Wyoming.