Konza Prairie Agroecosystem NEON (KONA) Soil Descriptions

Ap--0 to 12 centimeters (0.0 to 4.7 inches); very dark brown (10YR 2/2) silty clay loam, dark grayish brown (10YR 4/2), dry; 5 percent sand; 30 percent clay; weak coarse cloddy structure; slightly hard, friable; common fine roots throughout; noneffervescent; abrupt smooth boundary. Lab sample # 14N04703

Bt1--12 to 31 centimeters (4.7 to 12.2 inches); very dark brown (10YR 2/2) silty clay loam, dark grayish brown (10YR 4/2), dry; 5 percent sand; 36 percent clay; moderate fine subangular blocky structure; moderately hard, friable; common fine roots throughout; 20 percent faint 10YR 2/2), moist, clay films on all faces of peds; noneffervescent; clear smooth boundary. Lab sample # 14N04704

Bt2--31 to 54 centimeters (12.2 to 21.3 inches); very dark brown (10YR 2/2) silty clay, dark grayish brown (10YR 4/2), dry; 5 percent sand; 46 percent clay; weak medium prismatic parts to moderate medium subangular blocky structure; moderately hard, firm; common fine roots throughout; 25 percent faint 10YR 2/2), moist, clay films on all faces of peds; 1 percent fine distinct 7.5YR 4/4), moist, masses of oxidized iron; noneffervescent; gradual smooth boundary. Lab sample # 14N04705

Bt3--54 to 89 centimeters (21.3 to 35.0 inches); very dark grayish brown (10YR 3/2) silty clay, grayish brown (10YR 5/2), dry; 5 percent sand; 44 percent clay; weak medium prismatic parts to moderate medium subangular blocky structure; moderately hard, firm; common fine roots throughout; 30 percent faint 10YR 3/2), moist, clay films on all faces of peds; 2 percent fine distinct 7.5YR 5/6), moist, masses of oxidized iron; noneffervescent; gradual smooth boundary. Lab sample # 14N04706

Btss--89 to 119 centimeters (35.0 to 46.9 inches); dark brown (10YR 3/3) silty clay, brown (10YR 5/3), dry; 5 percent sand; 42 percent clay; moderate coarse prismatic parts to moderate medium subangular blocky structure; moderately hard, firm; few fine roots throughout; 1 percent prominent 10YR 2/1), moist, organoargillans on surfaces along root channels and 10 percent distinct slickensides (pedogenic) and 30 percent distinct 10YR 3/2), moist, clay films on all faces of peds; 1 percent fine distinct 7.5YR 5/6), moist, masses of oxidized iron; noneffervescent; clear smooth boundary. Lab sample # 14N04707

Btkss--119 to 156 centimeters (46.9 to 61.4 inches); brown (10YR 4/3) silty clay loam, pale brown (10YR 6/3), dry; 5 percent sand; 38 percent clay; moderate coarse prismatic parts to moderate medium subangular blocky structure; moderately hard, firm; 1 percent prominent 10YR 2/1), moist, organoargillans on surfaces along root channels and 10 percent distinct slickensides (pedogenic) and 30 percent distinct 10YR 3/2), moist, clay films on all faces of peds; 2 percent coarse moderately cemented 10YR 6/2), moist, carbonate concretions; noneffervescent; gradual smooth boundary. Lab sample # 14N04708

Btk--156 to 200 centimeters (61.4 to 78.7 inches); brown (10YR 4/3) silty clay loam, pale brown (10YR 6/3), dry; 5 percent sand; 35 percent clay; moderate coarse prismatic parts to moderate medium subangular blocky structure; slightly hard, firm; 2 percent prominent 10YR 2/1), moist, organoargillans on surfaces along root channels and 20 percent distinct 10YR 3/3), moist, clay films on all faces of peds; 1 percent medium weakly cemented carbonate concretions and 2 percent medium threadlike carbonate masses; noneffervescent. Lab sample # 14N04709