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II F ' wms
<br /> oiG
<br /> restricted permeability, water applications should be
<br /> r
<br /> 76
<br /> regulated so that he water does not stand on the The Jacktone soil is moderate) dee
<br /> Y R to 'a"'�j"
<br /> surface and damage the crops. The hardpan limits the and is somewhat poorly drained. It formed in`aj -�
<br /> suitability for deep-rooted crops. Where feasible, dee derived from mixed rock sources. Mottles in'#h }
<br /> ripping of this restrictive layer can help to overcome this drainage has beenindicate a improved prroved by leveest Poorly drained ilandWeve ;
<br /> limitation. The soil should be cultivated only within a projects. Typically, the surface layer is very recta`
<br /> narrow range of moisture content. It is too stick when Y rY darWilg
<br /> Y and dark gray clay about 22 inches thick. The ""-°`
<br /> wet and too hard when dry. Furrow, border, and inches of the subsoil is dark gray clay and ligh#'.'r.-.
<br /> �t sprinkler irrigation systems are suitable. Returning crop clay ! upP
<br /> residue to the soil or regularly adding other organic loam, The next 3 inches is a light gray 9.a
<br /> g 9 Y strong'-
<br /> g cemented to indurated hardpan. The next 9 riche"'•
<br /> material improves fertility, minimizes crusting, and yellowish brown loam, The lower part to a de fh " s
<br /> increases the rate of water intake. SV
<br /> This unit is suited to irrigated pasture. irrigation water inches i areass a low thesurface brown,layer is cemented hal"p
<br /> can be applied by sprinkler and border methods. Y clay or'siI
<br /> Leveling helps to ensure a unit loam. ,tl'
<br /> uniform application of water. a�f_
<br /> _ Proper stockingrates Permeability is slow in the Jacktone soil. Ariali�bli;
<br /> , pasture rotation, and restricted water capacity is pasture in -swell t
<br /> moderate. The shrink poentia
<br /> grazing during wet periods help to keep the '
<br /> p high. The effective rooting depth is limited by the,`.
<br /> good condition and protect the soil from compaction. hardpan at a depth of 20 to 40 inches. De th t
<br /> If this unit is used for urban development, the o t
<br /> R e main water,table is more than 5 feet, but water may tie b',e
<br /> limitations are the high shrink swell potential, the slow
<br /> perched permeability, depth to the hardpan, and low strength. rainfall oraiirrrigation. Runve the off nis after ow, and the fhazard�'of
<br /> The rare flooding is a hazard. Properly designing water erosion is slight. The rate of
<br /> water intake
<br /> foundations and footings and diverting runoff away from irrigated areas is 0.1 inch per hour. The soil is subs ct
<br /> !n'
<br /> buildings help to prevent the structural damage caused to rare flooding, which occurs during ears
<br /> by shrinking and swelling. On sites for septic tank g Y of `
<br /> absorption fields, the slow permeability can be abnormally high precipitation.
<br /> overcome by increasing the size of the absorption field. driveways, sidewalks
<br /> Urban land consists of areas covered by roads,',�"h,�_'
<br /> Ripping the hardpan improves permeabilityand thus parking lots, buildings, and other
<br /> structures. The soll material under the impervious
<br /> also improves the suitability of the soil for septic tank surface is similar to that of Jacktone clay. x. .
<br /> absorption fields. Properly designing buildings and Most areas are used for urban development. A few
<br /> roads can offset the limited ability of the soil to support
<br /> a load. Houses, roads, and streets should be RR areas are used for irrigated crops. This unit may
<br /> constructed above expected flood levels. provide wetfand functions and values. These should'`te-
<br /> This map unit is in capability units Ills-8 (MCRA-17) considered in plans for enhancement of wildlife habit
<br /> irrigated, and iVs-8 (MLRA-17), nonirrigated. It is in or land use conversion.
<br /> vegetative soil group G. Where the Jacktone soil is used for urban
<br /> development, the main limitations are the high shrinswell po , the Slowk
<br /> F." 181—Jacktone-Urban land complex, 0 to 2 percent hardpan, and!I w strength. The a�lre, depth
<br /> flooding t
<br /> loodngt staeso
<br /> slopes. This nearly level map unit is in basins. hazard. Properly designing foundations and footings
<br /> Elevation is 10 to 40 feet. The average annual
<br /> a annual air and diverting runoff away from buildings help to prev
<br /> precipitation is about 14 inches, the averaenf.
<br /> g the structural damage caused by shrinking and swelling:_
<br /> temperature is about 60 degrees F, and the average �-
<br /> frost-free period is about 270 days. g On sites for septic tank absorption fields, the stow
<br /> This unit is 50 percent Jacktone clay and 35 percent permeability e absorp#on field. Ripping the hardpan ling the size of
<br /> Urban land. The components of this unit occur as areas p mpraves '
<br /> � so intricately intermingled that it was not practical to permeability and thus also improves the suitability of they
<br /> soil for septic tank
<br /> map them separately at the scale used. absorption fields. Properly designing:
<br /> buildings and roads can offset the limited ability of the
<br /> Included in this unit are small areas of Hollenbeck
<br /> ° and Stockton soils in landscape positions similar to soil to support a load. Mouses, roads, and streets
<br /> ..
<br /> slightly should be constructed above expected flood levels.
<br /> those of the Jacktone soil. Also included, on the sli g Y The Jacktone soil is suited to irrigated row, field,
<br /> higher parts of the landscape, are small areas of
<br /> Jacktone soils that have moderately coarse textured or the slow Permeability and depth tand vineyard crops, The o the harain dpan, are
<br /> i . moderately fine textured overwash. incla
<br /> Included areas Because of the restricted permeability, water n
<br /> make up about 15 percent of the total acreage. a
<br /> �, pplications should be regulated so that the water does ��
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