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10/13/2016 Official Series Description- MINNEQUA Series <br />Exchangeable sodium: 0 to 15 percent. <br />Electrical conductivity: 0.5 to 8 dS/m. <br />Calcium carbonate equivalent: 5 to 40 percent, generally increasing with depth. <br />Particle size control section: (weighted average) <br />Clay content: 20 to 30 percent <br />Silt content: 40 to 60 percent <br />Sand content: 5 to 40 percent with less than 15 percent fine or coarser sand <br />Rock fragment content: 0 to 5 percent and are mainly 7 to 52 mm(1/4 to 2 inches) in diameter <br />A horizon: <br />Hue: 5Y to 7.5YR <br />Value: of 4 through 6 dry, 3 through 5 moist <br />Chroma: 1 through 3 <br />Texture: silt loam, loam, silty clay loam <br />Clay content: 18 to 35 percent <br />Calcium carbonate equivalent: 1 to 10 percent <br />Reaction: slightly alkaline or moderately alkaline <br />Bw horizon: <br />Hue: 5Y to 7.5YR <br />Value: 6 or 7 dry, 4 through 6 moist <br />Chroma: 2 through 4 <br />Texture: silt loam, loam, silty clay loam <br />Clay content: 18 to 35 <br />Reaction: moderately alkaline or strongly alkaline <br />Calcium carbonate equivalent of the fine earth: 10 to 25 percent <br />Bk horizon (Bky in some pedons): <br />Hue: 5Y to 7.5YR <br />Value: 6 to 8 dry, 5 to 7 moist <br />Chroma: 2 though 4 <br />Clay content: 15 to 35 percent <br />Calcium carbonate equivalent: 15 to 40 percent <br />Gypsum content: 0 to 5 percent <br />Reaction: moderately alkaline or strongly alkaline <br />COMPETING SERIES: These are the Manvel(CO) and Willard(NM) series. <br />Manvel and Will soils: do not have a paralithic contact at a depth of 50 to 100 cm (20 to 40 inches). <br />GEOGRAPHIC SETTING: <br />Landform: hills, cuestas, interfluves, pediments, and ridges <br />Slopes: range from 0 to 30 percent <br />Parent material: medium to moderately fine textured, slope alluvium and residuum weathered from chalk, marl, <br />shale and limestone. <br />Elevation: 1006 to 1981 meters (3,300 to 6,500 feet) <br />Mean annual precipitation: 254 to 356 millimeters (10 to 14 inches), with peak periods of precipitation in the <br />spring and summer months. <br />Mean annual temperature: 9 to 12 degrees C. (48 to 54 degrees F.) <br />Mean summer temperature: 20 to 23 degrees C. (68 to 74 degrees F.) <br />Frost free season: 125 to 170 days <br />GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Manvel soils and the Penrose soils. <br />MtpsJ/soilseries.sc.egov.usda.gov/OSD_Docs/M/MINNEQUAhtmi 213