The study was conducted by sectioning off 8 blocks, 66 x 330 feet each, on the U.S. Sheep Experiment Station, Dubois, Idaho (5500 feet altitude). Each block was then sub-divided into 10 plots (6.6 x 330 feet) and each plot was divided into 80 circular sub-plots. The subplots with a common center for both species were designated into sets of 10; thus each group with the same number was designated a set. Once the height of the wheatgrass reached 2.5 inches, one set of each block was completely clipped to ground level. Ten days later a second set was clipped followed by additional sets clipped at 10-day intervals until 7 sets had been clipped during the growing season. The remaining set was not clipped and served as a control to the experiment. Plant height and air-dry weight were measured and flower stalks were also counted the year following the initial clipping. This process was conducted for 6 years (1942 to 1947).
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.