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i 1 4-Asealon fine sandy loam, 0 to 6 percent slopes. This deep, well drained soil is on smooth to moderately dissected plains. It formed in calcareous loamy alluvium. Typically, the surface layer is dark brown fine santly loam 8 inches thick. The subsoil is Sandy clay loam to inches thick. The substratum to a depth of 60 inches or more is calcareous sandy loam. In some areas the surface layer is loam. Included in this unit are small areas of Ascalon fine sandy loam that has slopes of 6 to 9 percen?. Olney fine sandy loam, and Otero sandy loam. Also included are some areas of Rock outcrop. Permeability of this Ascalon soil is moderate. Available water capacity is hioh. Effective rootine dep?` i<- 60 inches or more. Runoff is slow to medium, and the hazard of water erosion is slight to moderate. The hazard of soil blowing is moderate. This unit is used as nonirrigated cropland and rangeland. Winter wheal is the main crop. This and is wet! suited tc winter whea:, barley, oats, and sorghum. Because precipitation is not sufficient for annual cropping, a cropping system that includes small grain and summer tallow is most suitable. Precipitation usually is too low for crops on this unit to make efficient use o1 fertilizer. Maintaining crop residue on or near the surface reduces runoff, reduces soil blowing, and helps to maintain soil filth and organic marier content. Stubble- mulch farming, stripcropping, and minimum tillage help to control erosion and conserve moisture. Terraces reduce runoff and the risk of erosion and help to conserve moisture. The potential plant community on this unit is mainly blue grams, western wheatgrass, sedges, and buttalograss. The average annual production of air-dry vegetation ranges from 500 to 1,500 pounds. If the range is overgrazed, the proportion of preferred forage plants decreases and the proportion of less preferred forage plants increases. Therefore, livestock grazing should be managed so that the desired balance of preferred species is maintained in the plant community. Range seeding is suitable if the range is in poor condition. The plants selected for seeding should meet the seasonal requirements of livestock or wildlife, or both. Other management practices that are suitable for use on this unit are proper range use, deterred grazing, and rotation grazing. If the plant cover is disturbed, protection from erosion is needed. Loss of the surtace layer results In a severe decrease in productivity and in the potential of the soil to produce plants sutable for grazing. This unit is well suited to windbreaks and environmental plantings. Supplemental irrigation may be needed when planting and during dry periods. This map unit is in capability subclass IVe, nonirrigated, and in Loamy Plains range site. 12-Bankard loamy fine sand, 0 to 3 percent slopes. This deep, well drained to somewhat excessively drained soil is on flood plains. 1t formed in Stratified, calcareous sandy alluvium. Typically, the surtace layer is brown loamy fine sand 6 inches thick. The upper part of the underlying material is loamy sand and sand 28 inches thick, and the lower part to a depth of 60 inches or more is gravelly sand and very gravelly sand that is stratified with thin lenses of sand, sandy loam, and foam. In some areas the surtace layer is sandy loam or loam. Included in this uni; ae small areas of sans and gravel bars. Permeability of this Bankard soil is rapid. Available water capacity is low. Effective routine deg;` 's 6. inches or more. Runoff rs slow, and the hazard of water erosion is slight. The hazard of soil blowing is high. This soil is subject to brief periods of flooding in spring ar~d summer. This unit is used as rangeland. The potenttal plant community on this unit is mainly switchgrass. Indiangrass, sand bluestem, and prairie sandreed. The average annual production of air-dry vegetation ranges from 1,200 to 2,500 pounds. li the range is overgrazed, the proportion of preferred forage plants decreases and the proportion of less preferred forage plants increases. Therefore, livestock grazing should be managed so that the desired balance of preferred species is maintained in the plant community. Range seeding is suitable ii the range is in poor condition. The plants selected for seeding should meet the seasonal requirements of livestock or wildlife. or both. Other management practices that are suitable for use on this unit are proper range use, deterred grazing, and rotation grazing. Livestock grazing should be managed to protect the soil in this unit from excessive erosion. This unit is poorly suited to windbreaks and environmental plantings. This map unit is in capability subclass Vlw, nonirrigated, and in Sandy Bottomland range site.