Development in Soil Survey: Soil Survey Investigations Laboratories1 Support of Taxonomic Concepts

摘要

The division of Soil Survey Investigations (SSI) was created in 1952 with the reorganization of the USDA. Memorandum 1318 of the Secretary of Agriculture (October 14, 1952) transferred many Bureau of Soils research activities from the former Bureau tothe Agriculture Research Service. SSI, merging the former Bureau of Soils and the Soil Conservation Service (SCS), retained those research activities supporting soil classification, mapping, and study of soil behavior and change. Dr. Guy D. Smith becameits first Division Director. Those efforts of the Division of Chemistry and Soils that had dealt with soil characterization and mineralogy became the Soil Survey Laboratories under Dr. L.T. Alexander (Fig. 1). The remaining field department, the Soil Geomorphology Projects, came under Dr. R.V. Ruhe. Dr. Smith closely coordinated the two parts.