Physical Characteristics of Soils of the Southern Region

Download or read book Physical Characteristics of Soils of the Southern Region written by R. J. Luxmoore and published by . This book was released on 1983 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Records of hydrologic measurements taken on two soil profiles on the Oak Ridge Reservation in eastern Tennessee are documented as a contribution of the S-124 Regional Technical Committee. This committee was composed of soil physicists in the southern region who conducted a cooperative research project on "The movement and retention of water and solutes in selected southern region field soils". Soil water content estimated from neutron probe measurements and matric potential measured with tensiometers provided in situ data for calculation of retention and hydraulic conductivity characteristics of the dominant horizons in the profiles. Retention characteristics determined on soil cores showed significant differences from field results that were attributed to entrapped air in field soils and spatial heterogeneity of soil physical properties. Tensiometer data did not provide consistent hydraulic gradient data, and conductivity calculations were made assuming a unit hydraulic gradient. Both soils were well drained and exhibited maximum conductivity values in excess of 1 m/d.