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1 <br />II� <br />0 <br />l <br />1 <br />ADAMS COUNTY, OOLORADO <br />Representative profile of Dacono loam, 0 to 1 percent <br />slopes, In a cultivated field, 0.2 mile south and 13,5 feet <br />west of the northeast corner of section 13, T. 1 S., R <br />E, W.: <br />Apt- -O to b Inch". [nylab•brown (IOYR 512) )aam. eery <br />dark grayisb brown tIOYIt 3121 when mvist; weak, <br />medium, subs iri)lar Wawky atrueture Bartinh to mod- <br />erately One, granular ytracture; slightly hand, frl- <br />able: neutral; clear, smooth bounxd- <br />ary. <br />Ap2-5 to 9 inrbra, dark gmyt%h brown (]OYR 412) 1peavy <br />loam, (lo percent one gravel), eery dark graytsb <br />brown (IOYR 3/2) when moist: wreak, u.exlerate, <br />subtricular block]• structure: %eighth bard, friable; <br />nuaca s. leareou neatral: clear, smooth boundary <br />B2t - -0 In l7 inches, grarlob- brown (IOYR u12) clay, dark <br />grayish blown (IOYR 4/2) when moist; moderate. <br />medium, prismatic structure parting to strong, fine, <br />angular atxl subaagular Wocky structure: moderate <br />continuous clay Olms on all pods; eery hard, firm; <br />noticalcart+ous: mildly alkaline; clsar, wavy bound- <br />4 ry. <br />li3en —li to 22 inches, light bmwalsti -gray (IOYR 012) sandy <br />clay load, dark grayish brown (10YR 4/2) when <br />moist: weak, mrvnum. mibauxutnr blocky structure; <br />hard, very friable: calcareous mail coutalus calcium <br />is aplotebew and dissemlaated; moderately alkaline; <br />clear, wary b,umdary. <br />C1 -22 to ltd inctus, tw"n )IOYR S /3) coarse sandy clay <br />loam ( 10 percent tlne and medium gravel). dark <br />brown (IOYR 1,131 wbcn mnigt; ma&lve to weak, <br />radlum. subangular blocky structure; slightly hard, <br />friable; calcareous; moderately alkaline: clear, wavy <br />boundary. <br />02-24 to 3', inches, brown (7.5YR 513) very coarse loamy <br />aaad (10 percent One gravel), -lark brown (7.:,YH <br />4/3) when moist; mameye; Daryl, very friable; cal- <br />careous : u:;oderately alkaline; clear, wary boutularY. <br />1103 -35 to PA inches, light -brown (7.5YR 6,14) %and and <br />gravel, dark brown (7 -5YR 4/4) when moist. single <br />grain. loose; calcareous; moderately alkaline. <br />The A borix.,n ranges from 5 to Io Inches in thlckne %s, fnlm <br />grayish brown to dark grayish brown in color, anti from <br />loam to clay loans In texture. The B horizon rang" from <br />x to IN Inch" In tbicknces. Depth to calcareous material <br />raW.4 from 8 to 20 lrscbea Depth to uncoueolldated sand <br />and grave: Is 20 to 30 Inch". <br />Dacono loam. 0 to I percent slopes QkiAI. --This soil <br />has the profile described as mprowitative for the xries. <br />It contains 5 to 15 percent gravel in the surface layer <br />and subsoil, and it has a sand and gravel layer between <br />depths of 20 and 40 inches. RitnotT is slow. The hazard <br />of crater erosion is slight., but the hazard of soil blow <br />ing is moderate if fields are not protevted by crops or <br />residue. Included in napping are some small arcws of <br />Satana loam and a few Small grayed slwts. <br />Nearly all of this soil is cultivated and irrigated. The <br />soil is easy to till and is well Fluted to truck furmilig <br />(fig. 4). Capability unit Ills -2, irrigated; not. placed in <br />a range site; tree, planting Snitability group 1. <br />Dacono loam, 1 to 3 percent slopes OaBI.- -This soil <br />has a profile that is similar to the one descnbed as rep - <br />resentative for the series, but it. has a thinner surface <br />laver and subsoil. Runoff is medium, and the hazard of <br />water erosion is moderate. The hazard of :roil blowing is <br />moderate in unprotected fields. <br />Most of the soil is cultivated and irrigated. Some of <br />the steeper areas tire. ured for irrigated pasture. Cap- <br />ability unit. IIIe -2, irrigated; not placed in a range site; <br />tree planting suitaltility group 1. <br />x z+ '► may, ` s, '� <br />f/yar, s,_lnteasire trattt farmielc on 114r"Iso email.. <br />Deertrail Series <br />13 <br />The Deertrail scrie consists of well- drained, nearly <br />level soils on uplands. These soils fortned in Nvind -de- <br />p(xtite(1 loamy matcrial. In Adams County. they occur <br />only in a complex with Weld soils. <br />In a representative profile, the surface laver is light <br />gravish brown very fine sandy loans and 'loam about <br />I) inches thick. It is noncalcareous. The upper part of <br />the sulwoil is brown and light brownish-gray clay about, <br />12 inches thick. It. is nonralcareous. The loner part of <br />this subsoil is very pale brown silty clay loans about 11 <br />inclo -s thick. It is highly calcareous, and niur_h of (fie, <br />lime is visible as streaks and spots. The underlying ina- <br />tkrial, below a depth of 32 inches, is highly calcareous. <br />very pale brown IAam. <br />Deertrail %oils str3orb water slowly, and the available <br />water capacity is very low. PernleftWity is slow. Hoots <br />are confined mostly to the surface layer, and only a <br />fe1v roots are in tfie 3ulvwil. <br />Representative profile of a Deertrail very fine sanely <br />loam having a slope of Ices than 1 perrent. in an area <br />of gross. ISOO feet south and 75 feet .test of the north- <br />east corner of rertion 12, T. 3 S., R. 3, W.: <br />A2- 0 to 5 Inchon light hrownNh -gray (IOYR 4/2) very One <br />sandy loam,, dark graylch hrnwn OAYR 4/2) -ben <br />moist: weak, One, piety *truciury parting to weak, <br />One, granular rtrurture: sot., very friable; noncal- <br />carrous: neutral; nbrupt, smooth boundary. <br />Molt ,', h. n inched: tight bmwnlAh -gray (10TH 4/2) loam, <br />d%rk grayish brown 410YR 412) when moist: weak, <br />One. pi-mmatle structure parting to moderate, me- <br />dium, subangular hlocky structure: hard, friable: <br />thin patcby clay Gimp: hlrached sand grains on anr- <br />face of p+e,t<: noncalcareous: mildly alkaliar: abrupt, <br />atwk)th boundary. <br />11211 9 n- 17 Inches, brown (IOTR 3!3) (lay, dark graSlsb <br />brown (IOY]t 3.5/2) wb>en melst : strour, medium, <br />columnar ctrorture parting to Strong. One, angular <br />blocky structure; very bard, firm; thin contlnuou% <br />clap fllma; nonralenreons; moderately alknilne: <br />gradual. smooth bounders. <br />B2t —l7 to 21 inches, llrht brownish -[rap (IOYR 6121 clay, <br />dark grayish lawn i`IOYR 4.512) when motet; mod- <br />erate, medium. prismatic atrurcture parting to mod- <br />erate to strong. dae, angular and putancular blocky <br />structure; very turd, drm; thin continuous clay <br />fl:m%: calearmus; very stronaly alkaline; clear, <br />4mooth lrrondsry. <br />]i.'Ira -21 to 32 Inches, very pale brown (IOYR 7/3) silty <br />clay loam, brown (]0YR 513) when moist; weak. <br />