2009-01-22_PERMIT FILE - M2009010

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40 This map unit is not suited to nonirrigated crops because of the slope and the hazards of water erosion and soil blowing. Controlled livestock management is the major management practice needed on this unit. The main limitations affecting windbreaks and environmental plantings are the slope and low precipitation. The Wages soil is also subject to the hazard of soil blowing, and the Eckley soil is droughty and has small stones. This map unit is not suited to windbreaks and environmental plantings in areas where the slope is more than 9 percent. Fabricated mulches protect the soil by reducing the acreage of land that is cultivated. Planting the trees on the contour helps to conserve moisture. Summer fallow, cultivation for weed control, and selection of adapted plants help to ensure the establishment and survival of seedlings. 23-Fort Collins loam, 1 to 3 percent slopes Setting Location: This map unit occurs in the southwestern part of the survey area adjacent to Cheyenne County, Colorado. Elevation: 4,301 to 5,200 feet Mean annual precipitation: 13 to 16 inches Frost-free period. 145 to 148 days Note: This very deep, well drained soil is on nearly level and gently sloping plains. It formed in eolian material over alluvium. The native vegetation is mainly grasses. Component Description Fort Collins and similar soils Percent of the map unit. 85 percent Landform: Plains Slope range: 1 to 3 percent Surface layer texture: Loam Depth to restrictive feature: More than 60 inches Drainage class: Well drained Parent material. Fine-loamy eolian deposits over fine- loamy alluvium Native plant cover type: Rangeland Flooding: None Available water capacity. Mainly 10.4 inches Typical profile: A-0 to 5 inches; loam BA-5 to 9 inches; loam Bt-9 to 19 inches; clay loam BCk-19 to 26 inches; clay loam Ck-26 to 60 inches; loam Soil Survey of Additional components: Stoneham and similar soils: 5 percent Ulmet and similar soils: 5 percent Pleasant and similar soils: 4 percent Lodgepole and similar soils: 1 percent Management Major uses: Nonirrigated cropland and rangeland The main limitations affecting nonirrigated crops are low precipitation and the hazard of soil blowing. Because the amount of precipitation is not sufficient for annual cropping, the best cropping system is one that includes small grain and summer fallow. Leaving crop residue on or near the surface helps to conserve moisture, maintain tilth, and control erosion. Controlled livestock management is the major management practice needed on this map unit. The main limitations affecting windbreaks and environmental plantings are low precipitation and the hazard of soil blowing. 24-Glenberg sandy loam, 1 to 4 percent slopes, rarely flooded Setting Location: This map unit occurs in the northern part of the survey area along the Republican River. Elevation: 3,901 to 4,600 feet Mean annual precipitation: 14 to 17 inches Frost-free period. 148 to 152 days Note: This very deep, well drained soil is on flood plains. It formed in sandy alluvium. The native vegetation is mainly grasses. Sagebrush is common. Component Description Glenberg and similar soils Percent of the map unit. 85 percent Landform: Flood plains Slope range: 1 to 4 percent Surface layer texture: Sandy loam Depth to restrictive feature: More than 60 inches Drainage class: Well drained Parent material: Coarse-loamy alluvium Native plant cover type: Rangeland Flooding frequency. Rare Available water capacity. Mainly 7.1 inches Typical profile: A-0 to 5 inches; sandy loam C1-5 to 9 inches; sandy loam C2-9 to 17 inches; sandy loam C3-17 to 28 inches; sandy loam C4-28 to 32 inches; sandy loam