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44
<br />42-Laney loam, 0 to 3 percent slopes. This deep,
<br />well drained, saline-alkali affected soil is on flood plains
<br />and fans on alluvial valley floors. Elevation is 7,600 to
<br />7,800 feet. The soil formed in calcareous alluvium. The
<br />average annual precipitation is about 8 inches; the
<br />average annual air temperature is about 41 degrees F;
<br />and the average frost-free period is about 95 days.
<br />Included in this unit are small areas of Hapney loam,
<br />San Luis sandy loam, and Hagga loam, all having slope
<br />of 0 to 1 percent.
<br />Typically, the surface layer of this Laney soil is light
<br />brownish gray loam about B inches thick. The upper part
<br />of the underlying material, which extends to a depth of
<br />about 50 inches, is stratified brawn and light gray loam
<br />and clay loam. The lower part to a depth of 60 inches or
<br />more is loamy coarse sand. The surlace layer and upper
<br />part of the underlying material are affected by alkali in
<br />most places.
<br />Permeability is slow to moderately slow. Effective
<br />rooting depth is 60 inches or more. Available water
<br />capacity is moderate. Surface runoff is slow, and the
<br />erosion hazard is slight. The soil blowing hazard is
<br />moderate to high if plant residue is removed.
<br />This soil is used mostly as range and for irrigated
<br />pasture.
<br />Land leveling, leaching of salts, and application of
<br />commercial fertilizer, manure, and plant residue are
<br />necessary for better plant production. Drainage systems
<br />must be maintained and irrigation water managed
<br />properly to prevent waterlogging of the soil and salt
<br />buildup in the root zone of plants. Use of minimum tillage
<br />practices and high-residue crops helps prevent soil
<br />blowing.
<br />Border and sprinkler methods of irrigation are suitable
<br />for this soil. Sprinkler Irrigation is suited to most crops.
<br />Border irrigation is well suited to alfalfa, small grains, and
<br />pasture. Regardless of the irrigation method used, water
<br />must be applied carefully to prevent seepage and water
<br />loss.
<br />The potential natural vegetation on this soil is
<br />dominated by alkali sacaton, alkali cordgrass, and inland
<br />saltgrass. Black greasewood and rubber rabbitbrush are
<br />prominent but widely spaced. If the range deteriorates,
<br />the proportion of the more desirable grasses, such as
<br />alkali sacaton and western wheatgrass, decreases, and
<br />that of black greasewood, rubber rabbitbrush, wild
<br />licorice, and inland saltgrass increases. Undesirable
<br />weeds and annual plants invade and become more
<br />abundant as the range condition declines.
<br />Establishing rangeland seedlings is difficult because of
<br />the low rainfall and alkali-affected surface layer. Deferred
<br />grazing, cross fencing, stockwater development, and
<br />brush control help to prevent range deterioration and
<br />promote growth of more desirable plant species.
<br />The grassland habitat on this Laney soil supports such
<br />wildlife as antelope, jackrabbit, cottontail, horned lark,
<br />and lark bunting. Proper livestock grazing management,
<br />Soil
<br />fencing that allows free movement of antelope, and
<br />livestock water developments help wildlife populations
<br />increase.
<br />This soil is suited to homesite development. The ma
<br />limitations are seepage, alkalinity, and shrink-swell
<br />potential. Buildings and roads can be designed to offsi
<br />the effects of shrinking and swelling. The effects of
<br />shrinking and swelling on buildings can be reduced by'
<br />maintaining a constant moisture content around the
<br />foundation or by backfilling with material that has low '
<br />shrink-swell potential. If the density of housing is
<br />moderate to high, community sewage systems are
<br />needed to prevent contamination of water supplies by'
<br />seepage.
<br />This soil is in capability subclasses Ills, irrigated, anc
<br />Vlls, nonirrigated. It is in the Salt Flats range site.
<br />~43-Luhon loam, 0 to 3 percent slopes. This deeF
<br />well drained soil is on fans on alluvial valley floors.
<br />Elevation is 7,600 to 8,000 feet. This soil formed in '
<br />calcareous alluvium. The average annual precipitation i
<br />about 10 inches; the average annual air temperature is
<br />about 41 degrees F; and the average frost-free period
<br />about 95 days.
<br />Included in this unit are small areas of Garita sandy,.
<br />loam, Travelers very stony loam, and Rock River grave
<br />loam, all having slopes of 0 to 3 percent. j
<br />Typically, the surtace layer of this Luhon soil is brow,
<br />loam about 7 inches thick. The underlying material to
<br />depth of 20 inches is light gray loam that has visible
<br />calcium carbonate. Below 20 inches the soil is pinkish]
<br />white loam and has less visible calcium carbonate tha;
<br />the layer above. This layer extends to a depth of 60;a
<br />inches. j
<br />Permeability is moderate. Effective rooting depth is:E
<br />inches. Available water capacity is high. Surface runoff
<br />medium, and the erosion hazard is moderate. Soil -
<br />blowing is a hazard it plant residue is removed. a
<br />This soil is used for range and for irrigated pasture a
<br />hayland.
<br />The potential natural vegetation on this soil is
<br />dominated by winterfat, founving saltbush, Indian ~
<br />ricegrass, and squirreltail. If the range deteriorates, the
<br />proportion of plants such as threeawn, pricklypear,
<br />snakeweed, pingue, and other fortis increases.
<br />Undesirable weeds and annual plants invade and
<br />become more abundant as range condition declines..3
<br />Sprinkler and border irrigation methods are suitable l
<br />this Luhon soil. Land leveling and relatively shoR lengt,
<br />of run are necessary to conserve water and prevent sc
<br />erosion. Drop structures should be installed in irrigatiof
<br />ditches to control water and prevent excessive ditch
<br />erosion. ?
<br />Establishing rangeland seedlings is difficult on this s'
<br />because of the low rainfall. Deterred grazing, cross ~
<br />fencing, and stockwater developments are needed to
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