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20 SOIL SURVEY
<br />from grass and weeds are the principal hazards in tion ranges from 1,600 pounds per acre in favorable years
<br />establishing tree and shrub plantings. Summer fallowing a to 1,000 pounds in unfavorable years. As range condition
<br />year in advance in nonirrigated areas and continued cul-- deteriorates, the tall grasses decrease., blue grama and
<br />tivation for weed control are needed to insure establish- buffalograss increase, and forage production drops. Un-
<br />ment and survival of plantings. Supplemental irrigation desirable weeds and annuals invade the site and erosion
<br />may be needed. Trees that are best suited and have good can occur as range condition becomes poorer.
<br />survival are Rocky Mountain juniper, eastern redcedar, Management of vegetation on this soil should be based
<br />ponderosa pine, Russian-olive, and hackberry. The shrubs on taking half and leaving half of the total annual produc-
<br />best suited are skunkbush sumac, lilac, Siberian peashrub, tion. Seeding is desirable if the range is in poor condition.
<br />and American plum. Western wheatgrass, switchgrass, sand reedgrass,
<br />Wildlife is an important secondary use of this soil. The sideoats grama, pubescent wheatgrass, intermediate
<br />cropland areas provide favorable habitat for ring-necked wheatgrass, and blue grams are suitable for seeding. The
<br />pheasant and mourning.dove. Many nongame species can grass selected should meet the seasonal requirements of
<br />be attracted by establishing areas for nesting and escape livestock. It can be seeded into a firm prepared seedbed,
<br />cover. For pheasants, undisturbed nesting cover is essen- A grass drill should be used. Seeding early in spring has
<br />tial and should be included in plans for habitat develop- proven most successful.
<br />ment, especially in areas of intensive agriculture. Windbreaks and environmental plantings are well
<br />This soil is poorly suited to urban and recreational suited to this soil. Flooding and moisture competition
<br />development because of the susceptibility to flooding. from grass and weeds are the principal hazards in
<br />Capability subclass.IIw irrigated. establishing tree and shrub plantings. Summer fallowing a
<br />26-Haverson loam, I to 3 percent slopes. This is a year in advance in nonirrigated areas and continued cul-
<br />deep, well drained soil on low terraces and flood plains at tivation for weed control are needed to insure establish-
<br />elevations of 4,500 to 4,600 feet. It formed in stratified ment and survival of plantings. Supplemental irrigation
<br />calcareous alluvium. Included in mapping are small areas may be needed. 'frees that are best suited and have good
<br />of soils that have fine sandy loam and sandy loam under- survival are Rocky Mountain juniper, eastern redcedar,
<br />lying material and small areas of soils that have sand and ponderosa pine, Russian-olive, and hackberry. The shrubs
<br />gravel within a depth of 40 inches. best suited are skunkbush sumac, lilac, Siberian peashruh,
<br />Typically the surface layer of this Haverson soil is and American plum.
<br />grayish brown loam about 4 inches thick. The underlying Wildlife is an important secondary use of this soil. The
<br />material to a depth of 60 inches is pale brown loam cropland areas provide favorable habitat for ring-necked
<br />stratified with thin lenses of loamy sand and clay loam. pheasant and mourning dove. Many nongame species can
<br />Permeability is moderate. Available water capacity is be attracted by establishing areas for nesting and escape
<br />high. The effective rooting depth is 60 inches or more. cover. For pheasants, undisturbed nesting cover is essen-
<br />Surface runoff is slow to medium, and the erosion hazard tial and should be included in plans for habitat develop-
<br />is low. ment, especially in areas of intensive agriculture. Range-
<br />in irrigated areas this soil is suited to all crops com- land wildlife, for example, the pronghorn antelope., can be
<br />monly grown in the area, including corn, sugar beets, attracted by developing livestock watering facilities,
<br />beans, alfalfa, small grain, potatoes, and onions. An exam- managing livestock grazing, and reseeding where needed.
<br />plc of a suitable cropping system is 3 to 4 years of alfalfa This soil is poorly suited to urban and recreational
<br />be
<br />h
<br />followed by corn, corn for silage, sugar beets, small grain cause
<br />t
<br />e susceptibility to flooding.
<br />,
<br />or beans. Land leveling, ditch lining, and installing le
<br />Capability
<br />apability subclass Ile irrigated, IVe nonirrigated;
<br />Loamy Plains range site
<br />
<br />pipelines may be needed for proper water applications .
<br />-
<br />All methods of irrigation are suitable
<br />but furrow ir- 27--Heldt silty clay, 1 to 3 percent slopes. This is a
<br />,
<br />rigation is the most common. Barnyard manure and com- deep, moderately well drained soil on plains at elevations
<br />
<br />mercial fertilizer are needed for top yields. of 4,950 to 5,050 feet. It formed in alluvial sediment
<br />
<br />In nonirrigated areas this soil is suited to winter wheat derived from shale. Included in mapping are small areas
<br />,
<br />barley, and sorghum. Most of the acreage is planted to of soils that have a clay loam or silt loam subsoil and sub-
<br />
<br />winter wheat. The predicted average yield is 28 bushels
<br />T stratum-
<br />Typically the surface layer is light brownish gray and
<br />per acre.
<br />he soil is summer fallowed in alternate years light yellowish brown silty clay about 7 inches thick
<br />Th
<br />
<br />to allow moisture accumulation. Generally precipitation is
<br />too low for heneficial use of fertilizer .
<br />e
<br />subsoil is light brownish gray'silty clay about 27 inches
<br />.
<br />Stubble mulch farming
<br />striperopping
<br />and minimum til- thick. The substratum to a depth of 60 inches is silty clay.
<br />,
<br />,
<br />lage are needed to control soil blowing and water erosion. Permeability is slow. Available water capacity is high.
<br />The effective rooting depth is 60 inches or more
<br />Surfa
<br />
<br />Terracing also maybe needed to control water erosion. .
<br />ce
<br />runoff is medium, and the erosion hazard is moderate
<br />
<br />The potential native vegetation is dominated by .
<br />In irrigated areas this soil is suited to crops commonly
<br />western wheatgrass. Blue grama, switchgrass, sand grown in the area, such as corn, sugar beets, beans, alfal-
<br />reedgrass, big bluestem, slender wheatgrass
<br />indian
<br />rass
<br />f
<br />d
<br />ll
<br />i
<br />,
<br />g
<br />,
<br />a, an
<br />sma
<br />gra
<br />n. The high clay content generally
<br />and green needlegrass are also present. Potential produc- restricts some crops.
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