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0 Sampson and similar soils Percent of the map unit: 30 percent Landform: Flood plains Slope range: 0 to 2 percent Surface layer texture: Loam Depth to restrictive feature: More than 60 inches Drainage class: Well drained Parent material. Fine -loamy alluvium Native plant cover type: Rangeland Flooding frequency: Rare Available water capacity. Mainly 9.9 inches Typical profile: A-0 to 6 inches; loam BA-6 to 10 inches; clay loam Bt1 -10 to 20 inches; clay loam Bt2 -20 to 29 inches; clay loam B13-29 to 38 inches; clay loam BC-38 to 60 inches; sandy clay loam Additional components Paoli and similar soils: 10 percent Bankard and similar soils: 5 percent Glenberg and similar soils: 5 percent Haverson and similar soils: 5 percent Pleasant and similar soils: 4 percent Lodgepole and similar soils: 1 percent Management Major uses: Nonirrigated cropland, irrigated cropland, and rangeland The main limitations affecting nonirrigated and irrigated crops are low precipitation, the flooding on the Sampson soil, and the hazard of soil blowing. Also, the location of channels may restrict irrigation methods. Because the amount of precipitation is not sufficient for annual cropping, the best cropping system for nonirrigated crops is one that includes small grain and summer fallow. Maintaining crop residue on or near the surface can help to control runoff and soil blowing and helps to maintain tilth and the content of organic matter. The Haverson soil is subject to lime- induced chlorosis. A high content of lime decreases the available supply of most plant nutrients. Chlorosis is apparent, particularly in beans or grain sorghum. Controlled livestock management is the major management practice needed on this map unit. The main limitations affecting windbreaks and environmental plantings are low precipitation, the hazard of soil blowing, and the flooding on the Sampson soil. Summer fallow, cultivation for weed control, and selection of adapted plants help to ensure Soil Survey of the establishment and survival of seedlings. Dikes and channels that have floodwater outlets can protect windbreaks from flooding. This map unit is not suited to homesite development because of the flooding. 79— Satanta -Ulmet loams, 1 to 3 percent slopes Setting Location: This map unit occurs dominantly in the southwestern part of the survey area and near Flagler, Seibert, and Vona. Elevation: 4,301 to 5,200 feet Mean annual precipitation: 14 to 16 inches Frost -free period. 145 to 148 days Note: This map unit is on nearly level and gently sloping plains. The native vegetation is mainly grasses. Component Description Satanta and similar soils Percent of the map unit. 45 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 10.0 inches Typical profile: Ap-0 to 4 inches; loam AB-4 to 7 inches; clay loam Btl -7 to 14 inches; clay loam Bt2 -14 to 19 inches; clay loam Bt3-19 to 23 inches; clay loam Bk -23 to 34 inches; loam C-34 to 60 inches; loam Ulmet and similar soils Percent of the map unit: 30 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. Clayey alluvium Native plant cover type: Rangeland