Establishment and Trends in Persistence of Selected Perennial Cool-Season Grasses in Western United States

摘要: ABSTRACT Restoring western US rangelands from a site dominated by invasive annuals, such as cheatgrass and medusahead, to diverse, healthy, perennial plant−dominated ecosystem can be difficult with native grasses. This study describes the establishment trends in persistence (plant/m2) of grass cultivars germplasm compared typically used crested Siberian wheatgrasses at four locations Idaho (one),Wyoming (one), Utah (two) that range mean average annual precipitation (MAP) 290 415 mm. Sites were cultivated fallowed 1 yr before planting using two glyphosate applications control weeds. We monitored seedling 10 cool-season species plant over 5 yr. Precipitation during seeding year varied sites reviving below MAP (4% 14%), while Wyoming received above 8% 26%, respectively. Across these sites, bottlebrush squ...