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<br />Vona Series
<br />The Vona series consists of deep, well-drained, coarse
<br />textured to moderately coarse textured soils on uplands.
<br />These soils are free of ]lartnful salts.
<br />The surface layer is grayish-brown sandy loam about 3
<br />inches thick. It absorbs water readily.
<br />The subsoil is lime-free, brown sandy loam about 25
<br />inches thick. although of the svue textural class as the
<br />surface layer, it contains more clay. Permeability in thi_
<br />layer is moderate to moderately rapid.
<br />The underlying material is limy sandy loam and loam
<br />that was deposited by wind. Plant roots penetrate this
<br />material eltsily.
<br />Vona soils are highly erodible if farmed. The}• are some-
<br />what droughty. The ore nic-matter content is ]ow, The
<br />supply of nitrogen is low, and the supplies of pltosphonts
<br />and potassium are modernte.
<br />These soils are used for 1•ange, for irrigated farming,
<br />and for dryland farllling. The native range plants era
<br />blue grnma, sand dropseed, }•ucca, and forbs. Dfost of the
<br />common crops can be grown under irrigation. Pinto beans,
<br />sorghum, and winter wheat are grown without irrigation.
<br />Representative profile in an Wren of natiTe short-grass
<br />range, 1/2 mile west and 200 feet not•th of the sotttlleast
<br />corner of sec. 23, T. 18 S•, R. 58 N.
<br />91~ to 3 Inches, grayish-bron-n (lOTR 5/2) sandy loom,
<br />dark grayish brown (lOTR 3/2) when moist; weak,
<br />coarse, crumb structure that breaks to weak, 5ne,
<br />crumb; soft when dry, very friable when moist; non-
<br />rnlcereous; clear, smooth boundary.
<br />Bl-3 to G inches, brown (lOYR 5/3) sandy loam, dark Grayish
<br />brown (lOYR 4/2) when moist; moderate, medium,
<br />subangular blocky structure; slightly hard when dry,
<br />very friable when moist; noncalcareous; clear, smooth ,
<br />boundary.
<br />B2t~ to 23 Inches, brown (lOYR 5/3) Leavy sandy loam;
<br />dark brown (lOTR 3/3) when moist; modernte,
<br />medium, subnngulnr blocks structure; hard when dre,
<br />eery friable when malst; thin patchy clay films on
<br />ped surfaces; noncalcnreous; gradual, smooth bouud- ~
<br />ary.
<br />Clca-28 to 35 inches, yellowish-brown (lOTR 5/3) sandy ~
<br />loam, dark yellowish brown (lOTR 4/4) when moist;
<br />massive; Lard when drS, eery friable when moist;
<br />strongly calcareous, with segregated lime as medium-
<br />stzed, soft Croncretions; clear, smooth boundary.
<br />C2ca~5 to 50 i¢ches, Ifght yello~vieh-bron-n (lOTR 8/~) Ionm,
<br />dark brown (IOTR 4/3) when motet; inasstve; slightly
<br />hard when dry, eery triable when moist; strongly
<br />calcareotu; dear, smooth boandnry.
<br />C3~0 to GO inches, light Sellowish-bron'n (SOYR G/4) loamy
<br />fine sand; massive; soft wLen dry, eery friable when
<br />moist; strongly calcareous.
<br />The surface layer is 2 to 12 inches thick. In texture it ranges
<br />from sandy loam to loamy sand. The subsoil is from 12 to 38
<br />inches thick and ranges from brown to light pellon-ish brown
<br />in color. Below the subsoil Is sandy loam, silt loam, loam, or,
<br />1^ places, loamy scrod. TLe depth to lime ranges from 20 to 48
<br />Inches.
<br />Vona soils are nssodated with Tivoli and Olney lolls. They
<br />ore less sandy than Ticoll soils but more sandy than Olney
<br />so{ls. Thep Inch the prominent subsoil structure that is charac-
<br />terlstlc of Olney soils.
<br />~~ -Vona sandy loam, 1 to 3 percent slopes 1VdBl.-This
<br />i soil occurs in the irrigated part of the county, as areas
<br />~ . ranging up to 200 acres in size.
<br />~, ::. This soil is well suited to corn, grain sorghum, and al-
<br />falfa. Because water intake is raped, irrigation furrows
<br />i _ should be relatively short. Soil nutrients can be lost
<br />through overirrigatlon. Both wind and water erosion are
<br />~.^ .~ hazards. Plowing in fall is not advisable, because wind
<br />~~ ~~~ erosion is a hazard. (Irrigated capability unit IIIe-41
<br />ter;.:,. - _
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