Nebraska Soils Field Trip - Virginia Tech

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4th IUSS Soil Classification Conference <strong>Field</strong> Tour Guidebook COMPETING SERIES: There are no competing series. GEOGRAPHIC SETTING: Parent material--18 to 30 inches of clayey alluvium and the underlying loamy alluvium Landform--flood plains Slopes--0 to 2 percent Elevation--700 to 1,260 feet above sea level Mean annual air temperature--46 to 56 degrees F. Mean annual precipitation--19 to 36 inches Frost-free period--135 to 185 days GEOGRAPHICALLY ASSOCIATED SOILS: These are the Albaton, Blake, Percival, Grable, Haynie, and Modale soils. Albaton--are in the slightly lower landscape positions, have a saturated zone within a depth of 1 foot during March to June in most years, and have a clay content of 50 to 60 percent throughout the particle-size control section Blake--are in landscape positions similar to those of the Onawa soils and have a clay content of 22 to 35 percent throughout the particle-size control section Percival--are in the slightly higher landscape positions, have a clay content of less than 10 percent in the lower half of the particle-size control section Grable--are in the higher landscape positions, have a clay content of 12 to 16 percent in the upper half of the particle-size control section, and do not have a saturated zone within a depth of 6 feet during April to June in most years Haynie--are in the slightly higher landscape positions, have a clay content of 15 to 18 percent throughout the particle-size control section, and have a saturated zone between depths of 4 to 6 feet during April to June in most years Modale--are in the slightly higher landscape positions, have a clay content of 10 to 18 percent in the upper third to upper half of the particle-size control section, and have a saturated zone between depths of 1 to 3 feet during April to June in most years DRAINAGE AND PERMEABILITY: Drainage class--somewhat poorly drained--a saturated zone occurs within depths of 1 to 3 feet during March to June in most years and is considered apparent Permeability--slow in the clayey alluvium and moderate or moderately rapid in the underlying loamy alluvium Surface runoff potentiallow or medium Flooding--rare to occasional flooding with very brief or brief duration during the months of February to November from precipitation events and snowmelt and flooding from streambank overflow is limited where dams and levees protect areas USE AND VEGETATION: Most areas are cultivated. The principal crops are corn, soybeans, and small grains. Some areas are land-leveled and irrigated. The native vegetation is big bluestem, little bluestem, western wheatgrass, indiangrass, switchgrass, and other grasses of the tall grass prairie. 84
4th IUSS Soil Classification Conference <strong>Field</strong> Tour Guidebook Site 2b – Monona Series The Monona series consists of very deep, well drained soils formed in loess. These soils are on interfluves and side slopes on dissected till plains and risers and treads on loess covered stream terraces. Slopes range from 0 to 40 percent. Most areas are cultivated. The principal crops are corn, soybeans, small grains, and hay. The native vegetation is big bluestem, little bluestem, Indiangrass, switchgrass, and other grasses of the tall grass prairie. Some steeply sloping areas are pastured or forested as is the case at the Hitchcock Nature center. Here, the woody components consist of bur oak, cottonwood, green ash, hickory, and raspberry. 85
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Soil Taxonomy Fine-loamy, mixed, ac
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Nebraska Soils Field Trip - Virginia Tech

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