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<br />This unit is used mainly for livestock grazing and
<br />wildlife habitat. It is also used as a source of roadfill and
<br />gravel. Some small areas are used for irrigated pasture.
<br />The potential plant community on the Borollic
<br />Calciorthids is mainly galleta, bluebunch wheatgrass,
<br />sand dropseed, big sagebrush, Indian ricegrass, and blue
<br />grams. The potential plant community on the Guben soil
<br />is mainly big sagebrush, western wheatgrass,
<br />needleandthread, prairie jnegrass, muttongrass, and low
<br />rabbitbrush. Smaller amounts of Utah serviceberry,
<br />Indian ricegrass, and bluegrass commonly are also
<br />present in the potential plant community. The average
<br />annual production of air-dry vegetation on this unit is
<br />about 750 pounds per acre.
<br />If the range is overgrazed, the proportion of preferred
<br />forage plants decreases and the proportion of less
<br />preferred forage plants increases. Therefore, livestock
<br />grazing should be managed so that the desired balance
<br />of preferred species is maintained in the plant
<br />community. Management practices suitable for use on
<br />this unit are proper range use, deferred grazing, rotation
<br />grazing, and brush management.
<br />If this unit is used for hay and pasture, the main
<br />limitations are steepness of slope of the Borollic
<br />Calciorthids, low available water capacity, and the
<br />narrow width and small size of the areas of the Guben
<br />soil.
<br />Proper stocking rates, pasture rotation, and restricted
<br />grazing during wet periods help to keep the pasture in
<br />good condition and to protect the soil from erosion,
<br />Proper grazing practices, weed control, and fertilizer are
<br />needed to insure maximum quality of forage. Irrigation
<br />water can be applied by the flooding or sprinkler method.
<br />This unit is well suited as a source of roadfill, gravel,
<br />and some topsoil. The main {imitations are the difficulty
<br />of reclamation, steepness of slope, and droughtiness.
<br />Topsoil can be stockpiled and used to reclaim areas
<br />disturbed during construction. If the soils are used as a
<br />base for roads and streets, the upper part of the soils
<br />can be mixed with the underlying sand and gravel to
<br />increase their strength and stability.
<br />This map unit is in capability subclass Vle. The Borollic
<br />Calciorthids are in Stony Foothills range site, and the
<br />Guben soil is in Ro ling oam range site.
<br />12-Bucklon-Inchau looms, 25 to 50 percent
<br />slopes. This map unit is on ridges and mountainsides.
<br />Areas are irregular in shape and are 20 to 100 acres in
<br />size. The native vegetation is mainly brush and grasses.
<br />Elevation is 7,000 to 9,500 feet. The average annual
<br />precipitation is 18 to 20 inches, the average annual air
<br />temperature is 37 to 39 degrees F, and the average
<br />frost-free period is 45 to 75 days.
<br />This unit is 55 percent Bucklon loam that has slopes
<br />of 25 to 50 percent and 35 percent Inchau loam that has
<br />slopes of 25 to 40 percent. The components of this unit
<br />• $OII SUlVC
<br />are so intricately intermingled that it was not practical ta-
<br />map them separately at the scale used.
<br />Included in this unit are small areas of Cochetopa anc_-:
<br />Jerry looms and Miracle fine sandy loam. Also included
<br />are small areas of Rock outcrop and areas of soils that
<br />are less sloping than the Bucklon and Inchau soils.
<br />Included areas make up about 10 percent of the total
<br />acreage. The percentage varies from one area to
<br />another.
<br />The Bucklon soil is shallow and well drained. It form~~-
<br />in residuum derived dominantly from interbedded
<br />sandstone and shale. Typically, the surface layer is
<br />brown loam 10 inches thick. The underlying material is
<br />pale brown clay loam 7 inches thick. Sandstone is at a
<br />depth of 17 inches.
<br />Permeability of the Bucklon soil is slow. Available
<br />water capacity is very low. Effective rooting depth is 10
<br />to 20 inches. Runoff is medium to rapid, and the hazard
<br />of water erosion is very high.
<br />The Inchau soil is moderately deep and well drained. I'
<br />formed in residuum and colluvium derived dominantly
<br />from sedimentary rock. Typically, the surface layer is
<br />dark grayish brown loam 5 inches thick. The upper 6
<br />inches of the subsoil is dark grayish brown loam, the
<br />next 11 inches is brown gravelly clay loam, and the
<br />lower 6 inches is brown gravelly loam. The substratum is
<br />grayish brown gravelly loam 7 inches thick. Sandstone is
<br />at a depth of 35 inches. Depth to bedrock ranges from
<br />20 to 40 inches.
<br />Permeability of the Inchau soil is moderate. Available
<br />water capacity is moderate. Effective rooting depth is 20
<br />to 40 inches. Runoff is medium to rapid, and the hazard
<br />of water erosion is very high.
<br />This unit is used for livestock grazing and wildlife
<br />habitat.
<br />The potential plant community on this unit is mainly
<br />Gambel oak, Utah serviceberry, elk sedge,
<br />bromegrasses, snowberry, and Kentucky bluegrass. The
<br />average annual production of air-dry vegetation is about
<br />2,000 pounds per acre.
<br />If the range is overgrazed, the proportion of preferred
<br />forage plants decreases and the proportion of less
<br />preferred forage plants increases. Therefore, livestock
<br />grazing should be managed so that the desired balance
<br />of preferced species is maintained in the plant
<br />community. Management practices suitable for use on
<br />this unit are proper range use, deferred grazing, rotation
<br />grazing, and brush management.
<br />Slope limits access by livestock and results in
<br />overgrazing of the less sloping areas. Trails or walkways
<br />can be constructed in places to encourage livestock to
<br />graze in areas where access is limited.
<br />This map unit is in capability subclass Vlle,
<br />nonirrigated. 1t is in Brushy Loam range site.
<br />13-Bulkley channery silty clay loam, 5 to 30
<br />percent slopes. This deep, well drained soil is on
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