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Total Annual Production <br />Favorable years 1800 Pounds per Acre Air Dry <br />Unfavorable years 900 " " <br />Median years 1500 " " " " " <br />Soils <br />Soils are moderately deep to deep dark brown sandy loam to light clay Loam <br />soil. Organic matter is 2 [0 4 percent. Neutral [o slightly alkaline reac- <br />tion. Soil mixture, subsoil permeability, effective depth, and other soil <br />factors are all favorable for plant growth. <br />Brushy Loam Range Site <br />Native (Potential) Vegetation <br /> <br />The aspect of this site is a shrub dominated community. Serviceberry and <br />oakbrush are the major brush species. Snowberry, chokecherry, and rose are <br />[he other principal shrub species. About 50 to 60 percent of [he annual pro- <br />duction is made up of grasses. Nodding brome, mountain brome, slender <br />wheatgrass, western wheatgrass, and Letterman and Columbia needlegrass~:s are <br />the major grass species on this site. Elk sedge, generally, is the most <br />frequently occurring plant. Major forb species include aspen peavine, <br />fleabane, western yarrow, American vetch, and lupine. Additional ?lan[s <br />present on [his site include oniongrass, big sagebrush, geranium, and low <br />larkspur. Refer [o Table 2.6-4 for percentage composition of the principal <br />species. <br />Total Annual Production <br />~~ <br />Favorable years 3000 Pounds per Acre Air Dry <br />Unfavorable years 1500 " " " " <br />Median years 2000 " <br />2-332 <br />