The effect of seeding five perennial grasses on the re-establishment of Dalmatian toadflax (Linaria dalmatica (L.) Mill.), musk thistle (Carduus nutans L.) and downy brome (Bromus tectorum L.) was examined near Riverside, Wyoming and at the USDA ARS High Plains Grassland Research Station near Cheyenne, Wyoming. The five perennial grass species were pubescent wheatgrass (Thinopyrum intermedium (Host. Barkworth & Dewey) Nevski var. 'Luna'), Russian wildrye (Psathyrostachys juncea (Fisch) Nevski var. 'Bozoisky'), streambank wheatgrass (Elymus lanceolatus (Scribn. & J. G. Smith) Gould var. 'Sodar'), thickspike wheatgrass (Elymus macrourus (Turcz.) Tzvelev var. 'Critana’). Each site was seeded all five grasses with a no-till drill after each site was roto-tilled. Dry matter production for each year was determined by clipping plots on each site and sorting by each weed species of interest, wheatgrass, and other associated species. Economic analysis was also performed on the two most competitive grass species, Luna pubescent wheatgrass and Hycrest crested wheatgrass. Capital budgeting techniques were used to determine the economic feasibility of reseeding.
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