Nebraska Soils Field Trip - Virginia Tech

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4th IUSS Soil Classification Conference <strong>Field</strong> Tour Guidebook Profile Description: Ap--0 to 14 centimeters; black (10YR 2/1) silty clay loam; 28 percent clay; moderate fine granular parts to weak fine subangular blocky structure; friable, slightly hard, slightly sticky, slightly plastic; very fine and fine roots throughout; very fine and fine interstitial pores; filled worm burrows; clear smooth boundary. A1--14 to 36 centimeters; black (10YR 2/1) exterior and very dark brown (10YR 2/2) interior silty clay loam; 30 percent clay; moderate thin platy parts to moderate fine subangular blocky structure; friable, slightly hard, moderately sticky, moderately plastic; very fine and fine roots throughout and medium roots throughout; very fine and fine tubular pores; abrupt smooth boundary. A2--36 to 56 centimeters; black (10YR 2/1) exterior and very dark brown (10YR 2/2) interior silty clay loam; 30 percent clay; moderate medium subangular blocky structure; friable, slightly hard, moderately sticky, moderately plastic; fine roots throughout and very fine roots throughout; fine tubular pores; gradual wavy boundary. AB--56 to 95 centimeters; very dark brown (10YR 2/2) exterior and very dark grayish brown (10YR 3/2) interior silty clay loam; 32 percent clay; moderate medium subangular blocky structure; friable, slightly hard, moderately sticky, moderately plastic; very fine roots throughout; fine tubular pores; clear smooth boundary. Bw1--95 to 119 centimeters; very dark grayish brown (10YR 3/2) exterior and dark grayish brown (10YR 4/2) interior silty clay loam; 32 percent clay; moderate fine subangular blocky structure; friable, slightly hard, moderately sticky, moderately plastic; very fine roots throughout; very fine tubular pores; 6 percent prominent clay films on vertical faces of peds; clear smooth boundary. Bw2--119 to 170 centimeters; dark grayish brown (10YR 4/2) exterior and brown (10YR 4/3) interior silty clay loam; 30 percent clay; moderate medium subangular blocky structure; firm, moderately hard, moderately sticky, moderately plastic; very fine roots throughout; very fine tubular pores; 30 percent distinct very dark grayish brown (10YR 3/2) organic stains on vertical faces of peds. 156
Seq. # Horizon depth (cm) Tour Book Tour Soil Taxonomy World Reference Base Diagnostic characteristics of Soil Taxonomy Soil Taxonomy World Reference Base 1 0 14 Ap ~ mollic epipedon mollic horizon mineral soil material mineral material 2 14 36 A1 ~ mollic epipedon mollic horizon lithologic discontinuity at 36 cm lithological discontinuity at 36 cm mineral soil material mineral material 3 36 56 A2 ~ mollic epipedon mollic horizon mineral soil material mineral material 4 56 95 AB ~ mollic epipedon mollic horizon mineral soil material mineral material 5 95 119 Bw1 ~ cambic horizon cambic horizon mineral soil material mineral material 6 119 170 Bw2 ~ cambic horizon cambic horizon mineral soil material mineral material Soil Taxonomy Fine-silty, mixed, superactive, mesic Cumulic Hapludolls WRB 1.) 4th IUSS Soil Classification Conference <strong>Field</strong> Tour Guidebook Horizon designation Diagnostic horizon Diagnostic characteristics or properties Diagnostic materials Taxonomic Classifications of Judson (12N0011) Haplic Phaeozems (Pachic, Siltic) Soil Survey Staff. 2010. Keys to Soil Taxonomy, 11th ed. USDA-Natural Resources Conservation Service, Washington, DC. Diagnostic properties of World Reference Base Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service. U.S. Department of Agriculture Handbook 436 IUSS Working Group WRB. 2007. World Reference Base for Soil Resources 2006, first update 2007. World Soil Resources Reports No.103. FAO, Rome. 157
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Taxonomic Classifications of surfac
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41° 24' 55'' 41° 24' 44'' 4th IUS
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Nebraska Soils Field Trip - Virginia Tech

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