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Dickson soil and landscape

Soil profile: A representative soil profile of the Dickson series; the State Soil of Tennessee. (Soil Survey of Cannon County, Tennessee; by Jerry L. Prater, United States Department of Agriculture, Natural Resources Conservation Service)

 

Landscape: Soybeans on an area of Dickson soils. They are on nearly level to undulating ridges on uplands. Slopes range from 0 to 12 percent, but are commonly less than 8 percent. The soil formed in 2 to 4 feet of a silty mantle underlain by residuum of limestone.

 

The Dickson series was established in 1923 in Dickson County, Tennessee, where it was first mapped in the Soil Survey of Dickson County, Tennessee (published 1926). At the time of the first soil survey about 50% of the acreage was being cultivated with the remaining acreage in forestland. Hugh Hammond Bennett collected samples of Dickson soils from both cultivated and forested settings and studied the moisture retention of the soils. Dickson was selected by the Tennessee NRCS Soil Survey Staff as the state soil due to its acreage and extent mapped within Tennessee.

 

The Dickson series consists of very deep, moderately well drained soils that have a slowly permeable fragipan in the subsoil. These soils formed in a silty mantle 2 to 4 feet thick and the underlying residuum of limestone. They are on nearly level to sloping uplands. Slopes range from 0 to 12 percent.

 

TAXONOMIC CLASS: Fine-silty, siliceous, semiactive, thermic Glossic Fragiudults

 

Depth to the fragipan ranges from 18 to 36 inches. Reaction is strongly acid or very strongly acid except where lime has been added. Fragments of gravel range from none to 10 percent in the lower Btx horizon and up to 35 percent in the 2Bt horizon. Depth to hard bedrock is greater than 5 feet. Transition horizons have color and textures similar to adjacent horizons.

 

USE AND VEGETATION: Most areas are cleared and used for growing hay, pasture, small grains, corn, soybeans, and tobacco. Some areas are in forest chiefly of oaks, yellow-poplar, hickories, gums, and maples.

 

DISTRIBUTION AND EXTENT: Highland Rim in Tennessee, Northern Alabama, and the Pennyroyal of Kentucky. The series is of large extent, over 500,000 acres.

 

For more information about this state soil. visit:

www.soils4teachers.org/files/s4t/k12outreach/tn-state-soi...

 

For information about the survey area, visit:

www.nrcs.usda.gov/Internet/FSE_MANUSCRIPTS/tennessee/cann...

 

For a detailed soil description, visit:

soilseries.sc.egov.usda.gov/OSD_Docs/D/DICKSON.html

 

For acreage and geographic distribution, visit:

casoilresource.lawr.ucdavis.edu/see/#dickson loo

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Uploaded on August 16, 2021