Cross-section of fragipan prisms--Nicholson soil series
Fragipans prevent the downward movement of water and roots into the soil. The very dense, brittle, prisms block movement while coarser material surrounding the prisms serves as a preferential flow path. Limited rooting depth caused by fragipans has been found to significantly decrease crop productivity.
The Nicholson series consists of very deep, moderately well drained soils with a slowly permeable fragipan in the subsoil. The soils formed in a mantle of loess or silty material underlain by residuum of limestone, calcareous shale, and siltstone. The soil is on upland ridgetops. Slopes range from 0 to 20 percent. Near the type location, the annual air temperature is 53.3 degrees F. and the mean annual precipitation is 41.3 inches.
TAXONOMIC CLASS: Fine-silty, mixed, active, mesic Oxyaquic Fragiudalfs
Depth to limestone, calcareous shale, or siltstone is more than 60 inches. Depth to the fragipan is 16 to 30 inches. Reaction ranges from very strongly to slightly acid above and in the fragipan; below the fragipan the reaction ranges from strongly acid to slightly alkaline. Rock fragments range from 0 to 15 percent in the Ap, Bt, Btx, and 2Bt horizon and 0 to 35 percent in the 2C horizon.
DRAINAGE AND PERMEABILITY: Moderately well drained. Negligible to medium runoff. Permeability is moderate above the fragipan and slow or very slow in the fragipan.
USE AND VEGETATION: Nearly all areas are used for growing corn, burley tobacco, small grains, truck and fruit crops, hay, pasture, and for urban-suburban development. The original vegetation was hardwood, chiefly oaks, maples, black walnut, hickory, ash, beech, elm, hackberry, black locust, Kentucky coffee tree; eastern redcedar.
DISTRIBUTION AND EXTENT: Kentucky, Indiana, Missouri, Ohio, Tennessee, and possibly Virginia. The series is of moderate extent.
For additional information about soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/main/soils/survey/class...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/N/NICHOLSON.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#nicholson
Cross-section of fragipan prisms--Nicholson soil series
Fragipans prevent the downward movement of water and roots into the soil. The very dense, brittle, prisms block movement while coarser material surrounding the prisms serves as a preferential flow path. Limited rooting depth caused by fragipans has been found to significantly decrease crop productivity.
The Nicholson series consists of very deep, moderately well drained soils with a slowly permeable fragipan in the subsoil. The soils formed in a mantle of loess or silty material underlain by residuum of limestone, calcareous shale, and siltstone. The soil is on upland ridgetops. Slopes range from 0 to 20 percent. Near the type location, the annual air temperature is 53.3 degrees F. and the mean annual precipitation is 41.3 inches.
TAXONOMIC CLASS: Fine-silty, mixed, active, mesic Oxyaquic Fragiudalfs
Depth to limestone, calcareous shale, or siltstone is more than 60 inches. Depth to the fragipan is 16 to 30 inches. Reaction ranges from very strongly to slightly acid above and in the fragipan; below the fragipan the reaction ranges from strongly acid to slightly alkaline. Rock fragments range from 0 to 15 percent in the Ap, Bt, Btx, and 2Bt horizon and 0 to 35 percent in the 2C horizon.
DRAINAGE AND PERMEABILITY: Moderately well drained. Negligible to medium runoff. Permeability is moderate above the fragipan and slow or very slow in the fragipan.
USE AND VEGETATION: Nearly all areas are used for growing corn, burley tobacco, small grains, truck and fruit crops, hay, pasture, and for urban-suburban development. The original vegetation was hardwood, chiefly oaks, maples, black walnut, hickory, ash, beech, elm, hackberry, black locust, Kentucky coffee tree; eastern redcedar.
DISTRIBUTION AND EXTENT: Kentucky, Indiana, Missouri, Ohio, Tennessee, and possibly Virginia. The series is of moderate extent.
For additional information about soil classification, visit:
www.nrcs.usda.gov/wps/portal/nrcs/main/soils/survey/class...
For a detailed soil description, visit:
soilseries.sc.egov.usda.gov/OSD_Docs/N/NICHOLSON.html
For acreage and geographic distribution, visit:
casoilresource.lawr.ucdavis.edu/see/#nicholson