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20 SOIL SURVEY
<br />' from grass and weeds are the principal hazards in lion ranges from 1,600 pounds per acre in favorable yeats
<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 azeas and continued cu]- deteriorates, the tall grasses decrease, blue grams and
<br />tivatioa for weed control are needed to instue 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 Roriry Mountain juniper, eastern redcedaz, Management of vegetation on this soil should be based
<br />ponderosa pine, Russian-0live, and hackberry. The shrubs on taking half and leaving half of the total annual produc-
<br />beat suited are akunkbush sumac, lilac, Siberian peashrub, Lion. 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 sm1 The sideoats grams, 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 6t'aas selected should meet the seasonal requirements of
<br />be attracted by establishing areas for nesting and escape livestock It ran be seeded into a Srm 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 />meet, especially in areas of intensive agriculture. Windbreaks and environmental phrr~tings are well
<br />This soil is poorly suited to urban and recreational smted to this soil Flooding and moisture competition
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<br />development because of the susceptibility to flooding. from grass and weeds are the principal hazards m
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<br />Capability subclava IIw irrigated. establishing tree and shrub phmtings Summer fallowing a
<br />26-Haven9on loam, 1 to 3 percent slopes. This is a Y~r m 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 establiah-
<br /> elevationa of 4,500 to 4,800 feet It formed in stratified meet and survival of plantings Supplemental irrigation
<br /> calcareous alluvium. Included in mapping are small areas may be needed. Trees that are beat suited and have good
<br /> of soils that have fine sandy loam and Bandy loam under- surnval are Rocky Mountain juniper, eastern redcedaz,
<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. beat suited are skunkbush suma4 lilac, Siberian peashrub,
<br />
<br />it
<br />Typirauy the surface layer of this Haverson soil is and Amerimn plum.
<br />Wildlife is an important secondary use of this soil The
<br />i ~ grayish brown loam about 4 inches thick. The underlying
<br />cropland areas provide favorable habitat for ring-necked
<br />~I material to a depth of 60 inches is gale brown loam Pheasant and mourning dove. Many nongame species can
<br /> stratified with thin lenses of loamy sand and clay loam. be attracted by establishing areas for nesting and escape
<br />! Permeability is moderate. Available water capacity is cover. For pheasants, undisturbed nesting cover is esaen-
<br />~ high. The effective rooting depth is 60 inches or more. t~ and should be included in plans for habitat develop-
<br /> Surface runoff is slow to medium, and the etosion hazard ment, especially in areas of intensive agriculture. Range-
<br />s is low. land wildlife, for example, the pronghorn antelope, ran be
<br /> Ia irrigated areas this soil is suited to all crops com- attracted by developing livestock watering facilities,
<br />i monly grown in the area, including corn, sugaz beets, managing livestock grazing, and reseeding where needed.
<br />i beans, alfalfa, small grain, potatoes, and onions. An exam- This soil is poorly suited to urban and recreational
<br /> plc of a suitable rsopping system is 3 to 4 years of alfalfa development because of the susceptibility to flooding.
<br /> followed by corn, corn for sr7age, sugaz beets, small grain, apability subclass IIe irrigated, IVs nonirrigated:
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<br />~ or beans. Land leveling, ditch lining, and installing
<br />Y Plains range site.
<br />' pipelines may be needed for proper water apPlicationa. -Heldt silty clay, 1 to 3 percent slopes. This is a
<br />.. All methods of irri lion are suitable, but furrow ir-
<br />I gr p, moderately well drained soil on plains at elevations
<br />i rigation is the most common. Barnyard manure and com- of 4,950 to 5,050 feet It formed in alluvial sediment
<br />mercial fertilizer are needed for top yields. derived from shale. Included in mapping are small areas
<br />.', In nonirrigated areas this soil is suited to winter wheat, of sails that have a clay loam or silt loam subsoil and sub-
<br />barley, and sorghum. Most of the acreage is planted to a~t~,
<br />winter wheat The predicted average yield is 28 bushels ~.p;may the surface layer is light brownish gray and
<br />per acre. The soil is summer followed in alternate years light yellowish brown silty clay about 7 inches thick. The
<br />to allow moisture accumulation. Generally precipitation is subsoil is light brownish gray silty clay about 27 inches
<br />too low for beneficial use of fertilizer. thick The substratum to a depth of 60 inches is silty clay.
<br />Stubble mulch farming, stripcropping, and minimum til- permeability is slow. Available water capacity is high.
<br />loge are needed to control soil blowing and water erosion. The effective rooting depth is 60 inches or more. Surface
<br />Terracing also may be needed to control water erosion. runoff is medium, and the erosion hazard is moderate.
<br />The potential native vegetation is dominated by In irrigated areas this soil is suited to crops commonly
<br />western wheatgrass. Blue grams, switchgrass, sand grown in the area, such as corn, sugar beets, beano, alfal-
<br />reedgrass, big bluestem, slender wheatgrass, indiangrass, fa, and small grain. The high clay content generally
<br />and green needlegrass are also present Potential produc- restricts some crops
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