2012-10-01_REVISION - M1977306 (22)

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c. The approximate vegetative basal density is 10 to 15 percent. 4. Annual Production In excellent condition, the approximate total annual production (air -dry) is: Favorable years Normal years Unfavorable years 5. Soils 800 pounds per acre (1000 kg /ha) 600 pounds per acre (672 kg /ha) 400 pounds per acre (448 kg /ha) Of this production 25 to 30 percent will likely be unpalatable to grazing animals. a. The soils in this site are moderately deep to deep and well drained. The soils formed in aeolian and alluvial materials derived mainly from sandstone. The surface layer is light brown to reddish brown loamy fine sand to loam, 3 to 10 inches (8 to 26 cm) thick. The subsoil is reddish brown to brown clay loam to fine sandy loam, 5 to 17 inches (13 to 43 cm) thick. The underlying layers are light reddish brown to light brown loam to sandy loam 20 to 48 inches (51 to 122 cm) thick. The soils are mildly to moderately alkaline and calcareous to the surface. Subsoils may have pebbles or gravels present. Permeability ranges from moderate to moderately rapid. Water holding capa- city is generally moderate. The runoff potential is slow to medium. The erosion hazard is slight. b. The major soils associated with this site are: 1. Grazing 70 - Potts fine sandy loam X70 - Potts - Hagerman loams 30 - Progresso fine sandy loam 43 - Begay loamy fine sand 40 - Neville - Paradox fine sandy loam B. MAJOR USES AND INTERPRETATIONS #325 Semidesert Loam MLRA 35 This site provides fall, winter and spring for,ige for livestock. Big sagebrush, broom snakeweed and Douglas rabbitbrush may increase with excessive grazing use. 1/ Vegetation density = basal area, which is the area of ground surface covered by the stem or stems. Usually, this is measured one inch above the soil in contrast to the full spread of foliage.