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<br /> Washington County, Colorado 45
<br /> 10 percent of the total acreage. The percentage varies be used to protect buildings and onsite sewage disposal
<br /> from one area to another. systems from flooding. Revegetating disturbed areas
<br /> Permeability of this Paoli soil is moderately rapid. around construction sites as soon as feasible reduces
<br /> Available water capacity is moderate. Effective rooting soil blowing.
<br /> depth is 60 inches or more. Runoff is slow, and the Frost action potential limits the construction and
<br /> hazard of water erosion is slight. The hazard of soil maintenance of roads, streets, driveways, and sidewalks.
<br /> blowing is severe. This soil is subject to rare periods of Roads and streets should be designed to offset the low
<br /> very brief flooding in spring and early in summer. strength of the soil.
<br /> This unit is used for irrigated and nonirrigated crops This map unit is-in capability subclasses Ile, irrigated,
<br /> and for grazing. and Ille nonirrigated. it is in the Overflow range site.
<br /> If this unit is used for irrigated crops, the main
<br /> concems of management are the hazard of soil blowing 54—Platner fine sandy loam.This deep, well drained
<br /> and maintaining soil fertility. Furrow, border, corrugation, soil is on smooth plains. It formed in alluvium. Slope is 0
<br /> and sprinkler irrigation systems are suited to this unit. to 3 percent. Areas are irregular in shape and are 40 to
<br /> Water should be applied in amounts sufficient to wet the 600 acres.
<br /> root zone but small enough to minimize the leaching of Typically, the surface layer is grayish brown fine sandy
<br /> plant nutrients. If furrow irrigation is used, water should loam 9 inches thick. The upper part of the subsoil is
<br /> be applied at frequent intervals and rues should be grayish brown clay loam 12 inches thick, the next 10
<br /> short. In sloping areas, leveling is necessary to efficiently inches is light brownish gray clay loam, and the lower
<br /> apply and remove water. part to a depth of 60 inches or more is very pale brown,
<br /> Applying nitrogen and phosphorus increases stratified sandy loam and gravelly sand.
<br /> production. Maintaining crop residue on or near the Included in this unit are small areas of Ascalon fine
<br /> surface reduces runoff and soil blowing and helps to sandy loam, Keith very fine sandy loam, and Wages
<br /> maintain soil tilth and the organic matter content. Tillage loam on low knolls and ridges. Included areas make up
<br /> should be kept to a minimum. about 20 percent of the total acreage.
<br /> If this unit is used for nonirrigated crops, the main Permeability of this Platner soil is slow. Available water
<br /> limitations are the hazard of soil blowing and low capacity is moderate. Effective rooting depth is 60
<br /> precipitation. Because precipitation is not sufficient for inches or more. Runoff is slow, and the hazard of water
<br /> annual cropping, a cropping system that includes erosion is slight. The hazard of soil blowing is moderate.
<br /> planting small grain and fallowing in summer is most This unit is used mainly for nonirrigated and irrigated
<br /> suitable. Soil blowing is reduced by interplanting crops in crops. It is also used for grazing.
<br /> alternate strips at right angle to the prevailing wind, If this unit is used for nonirrigated crops, the main
<br /> returning crop residue to the soil, and practicing limitations are low precipitation and the hazard of soil
<br /> minimum tillage. Light applications of nitrogen generally blowing. Because precipitation is not sufficient for annual
<br /> increase the production of crop residue, which reduces cropping, a cropping system that includes planting small
<br /> soil blowing and traps snow. grain and fallowing in summer is most suitable. Soil
<br /> The potential plant community on this unit is mainly blowing is reduced by returning crop residue to the soil, i
<br /> sand bluestem, western wheatgrass, prairie sandreed, practicing minimum tillage, and interplanting crops in
<br /> switchgrass, and blue grama. alternate strips at right angle to the prevailing wind. All
<br /> If the range vegetation is seriously deteriorated, tillage should be on the contour or across the slope.
<br /> seeding is necessary. The seed should be placed in a Areas that have smooth slopes can be terraced and
<br /> clean, firm bed of sorghum or millet stubble, and then farmed on the contour.
<br /> protection from plant competition should be provided. If this unit is used for irrigated crops, the main
<br /> It this unit is used for windbreaks and environmental limitations are slow permeability and the hazard of soil
<br /> plantings, the main limitations are the hazard of soil blowing. Sprinkler irrigation is suited to this unit. Use of
<br /> blowing and low precipitation. Soil blowing is reduced by this method permits the even, controlled application of-
<br /> cultivating only in the tree rows and by leaving a strip of water, reduces runoff, and minimizes the risk of erosion.
<br /> vegetation between the rows. If necessary, supplemental Water should be applied at a slow rate over a long
<br /> irrigation should be provided when planting and during period to insure that the root zone is properly wetted.
<br /> dry periods.Among the trees that are suitable for Maintaining crop residue on or near the surface
<br /> planting are Rocky Mountain juniper, eastern redcedar, reduces runoff and soil blowing and helps to maintain
<br /> ponderosa pine. Siberian elm, Russian-olive, and soil tilth and the organic matter content. Excessive
<br /> hackberry. Suitable shrubs are skunkbush sumac, lilac, cultivation can cause a tillage pan to form. This pan can
<br /> and Siberian peashrub. be broken by subsoiling when the soil is dry.
<br /> If this unit is used for homesite development, the main The potential plant community on this unit is mainly
<br /> limitations are the hazards of flooding and soil blowing. blue grama, buffalograss, western wheatgrass, green
<br /> Dikes and channels that have outlets for floodwater can needlegrass, and sedges.
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