Date of this Version
Thesis (M.S.)—University of Nebraska—Lincoln, 1958. Department of Agronomy.
Apatite grains occurring in the sand and coarse silt separates were identified and counted microscopically and representative portions of these fractions were analyzed chemically for total phosphorus for the apatites in Tripp, Valentine and Sharpsburg soils. The largest reserves of phosphorus as apatite occurred in the parent materials of the Sharpsburg soil. Appreciable quantities of these reserves were distributed throughout the Tripp soil profile and the smallest uniform amounts occurred in the Valentine soil.
Advisors: R. P. Matelski; H. F. Rhoades.