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ER 2 of <br />iris unit is wall suited to ir-r-igatind row, field, and orchard crops. <br />It has few limitations. Furrow, border-, corrugation, and sprinkler <br />Irrigation sy='tews are suited to ti,is soil. Water should be applied in <br />amounts sufficient to wet the root zone but in amounts small enough to <br />minimize the leaching of plant nutrients. A cropping system that <br />includes crop rotation or a cover- crop, use of crop residue and proper- <br />t111Lge improves soil tiIth and increases fertility and water <br />Infi Itr'ntinn. If this unit 1s used for dryland grain crops, the main <br />livitrtino islow rainfa.il during the growing season. Because <br />prcclF:tat101A .s not sufflciEnt for annual cropping, a cropping system <br />thz'C :hcleldus 5.'m1.11 arzin and summer fallow Is most suitable. Crop's <br />re -.p oI d to hilroyeh and phosphorus fe•rti l izer. <br />Ii i.•., unit is used i-, nome:Ite development, the main limitation_. are <br />f V U 1':-6 1 slow per meat I I I ty, low striongtn, and moderate snr Ink.-swr I i <br />A tae -9il 1= used for septic tank. absorption fields, tne: <br />I imit, vion of mo6erately slew permezini l lty can be overcome by <br />. c*,c:-'n; A.t niz e of the arsorptiun field. It the density of houslnr5 <br />11 I;OJerLVI t� high, community sewage systems are needed to prevent <br />. AI LB"llwSt-,OM of w.•ter supplies as a result of saepagE• from on-site <br />_..Lge disposal -v5t1Tmc. buildings and roads should be designed to <br />offset the Ilmltto anility of the soil in this unit to support a 1660. <br />If bulldinyE are con tructed on this boil, pruperly dpslgning <br />foundat IOnE L10C ,-nt IINJE and diverting runoff away from building- hEQ <br />to prevent structural damage bwcaune of shrinking and swellinS. <br />r..c.p uni! it incapability unite . k17), irrigated, and Ikc-: ii7!, <br />n! 5 1. I i Q! sk .. <br />PRELTMTNA 7 <br />SUBJECT 70 REVISION <br />13.3-45 <br />