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1� SOIL SURVEY IICb-52 to GO inches, pale-brms-n (10YR 6/3) gravelly loamy sand,grayish brown (101R 5/2) when moist;massive to single Brain (structuieless) ; slightly hard when dry, very friable when moist; noncalcai eous; 1)11 7.5. ter_ r 1 The 3 horizon ranges from 4 to S inches in thickness. The - D2t horizon ranges from heavy silty clay loam to clay. When the soil is moist, very darl, grayish-brown or darker colors extend to a depth of 20 to 50 inches. In most areas free lime has been leached to a. depth of 00 inches, but a few- areas are calcareous at a depth of 40 inches. Pleasant soils have a more uniform color in the subsoil than x have Rago soils. Also, Pleasant soils lacy the distinct layer r of accumulated lime that occurs in Rago soils. t Pleasant loam (0 to 3 percent slopes) (Ps) occupies the acreage in the south-central hart of the county at the rest and north-west ed"es of the sandhills. Included with this soil in mapping were areas of Pago - and Mumma loans. Also included were playas and a few areas having a surface layer of light clay loam. Pleasant loain is sleep and takes seater slowly, but it - sloes not release -water readily to plants. Runoff' is slow-. This soil is suitable for cultivation, and about half the acreage is cultivated. In dryf armed areas, crops and grass for pasture or range are suited. Also suited are irrigated - crops,pasture,or hay. This soil periodically is flooded after heavy rains. If theFUM soil is tilled when wet,plowpans tend to form in the upper �PIW'� part of the subsoil. Periodic chiseling• when the soil is clay ll ss breaks up the plo--pan. Stubble mulching or use of crop residue generally helps to reduce erosion in dryfarmed 1 '' areas. Although the soil is nearly level, irrigated fields re- quire leveling so that water spreads -uniformly. Practices ¢ for controlling soil blowing and for inaintaining fertility are careful management of irrigation water and working crop residue into the soil. At; Blue grama, bufl'alograss, and western wheatgrass grog vigorously on this soil. In cultivated or on A ergzazecl areas, reseeding is desirable if the soil is hoist and covered with litter. ll grazing should be deferred until the grass forms it good root system:. Overgrazing can be avoiclecl if salt, � watering points,.and fences are located so that animals , graze the entire range. Capability units IIIs-1 (dryland) ; and IIe-2 (irrigated) ; Clayey Plates range site; rind- break suitability group 1. Rago Series The Rago series consists of deep, well-drained, loamy soils. These soils occur on uplands and are meanly level or gently sloping. They occupy broad, flat areas and are extensive throughout the county. . ; = In a typical profile the plow layer is grayish-brown loam Figure G.—Profile of Rago loam. about 5 inches thick (fig. 6). It is easily worked. The subsoil is about 21 inches thick. The upper part is able surface layer. They have a higli capacity' to hol- dark grayish-brown, slightly hard loam and hard clay water and are high in natural fertility. loam. The middle part is Clark-gray, hard silty clay- loam, Except for a few small areas, the Rago soils are dry and the lower part is pale-brown, slightly hard silty clay farned.Winter wheat,barley, and sorghums are the mai_ loam that is strongly calcareous and contains visible lime. crops. Some oats are grown in a few areas. The nativ The underlying m-serial is very pale brown loam and vegetation consists mainly of western wheatgrass and Wu silt loam. that is very- strongly calcareous and contains grama grasses. visible lime. Typical profile of Rago loans in a.field of wheat stubbl Surface runoff is median, because these soils are not (295 feet -west and S4 feet north of southeast corner o more than gently sloping and have a. moderately pernre- section 36, T. 8 N., R. 43 W.)