Browsing by Author "Obenshain, Samuel S."
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- Chemical and physical properties of Fairfax County soilsObenshain, Samuel S.; Porter, Hobart C. (Virginia Agricultural Experiment Station, 1960-06)Detailed studies were made of the physical and chemical properties of the soil in Fairfax County
- Chemical and physical properties of soils in Northumberland and Lancaster counties, VirginiaObenshain, Samuel S.; Elder, J.H.; Brasher, B. R. (Virginia Agricultural Experiment Station, 1961-04)Chemical and physical properties of soil survey in Northumberland and Lancaster County Virginia
- Chemical characteristics of Fauquier County soilsObenshain, Samuel S.; Petro, J. H. (Virginia Agricultural Experiment Station, 1960-05)Detailed studies were made of the physical and chemical properties of the soil in Fauquier County
- Chemical characteristics of important Loudoun County soilsObenshain, Samuel S.; Porter, Hobart C. (Virginia Agricultural Experiment Station, 1959-07)Results of a soil survey completed for Loudoun County
- Chemical characteristics of important Prince Edward County soilsObenshain, Samuel S.; Porter, Hobart C. (Virginia Agricultural Experiment Station, 1959-07)Results of a soil survey completed in 1948 for Prince Edward County.
- Chemical characteristics of important Tazewell County soilsObenshain, Samuel S.; Porter, Hobart C. (Virginia Agricultural Experiment Station, 1959-07)Presents chemical data to supplement soil surveys of Tazewell County
- Chemical characteristics of profile samples of soils of Fluvanna County, VirginiaObenshain, Samuel S.; Porter, Hobart C. (Virginia Agricultural Experiment Station, 1959-04)Chemical properties of the common soils of Fluvanna County are presented in this report
- Chemical characteristics of profile samples of soils of Norfolk County, VirginiaObenshain, Samuel S.; Henry, Elvin F. (Virginia Agricultural Experiment Station, 1959-04)Presents chemical data to supplement soil surveys of Norfolk County
- Chemical properties of Washington County soilsObenshain, Samuel S.; Henry, Elvin F. (Virginia Agricultural Experiment Station, 1960-05)Results of a soil survey completed in Washington County.
- Chemical, physical and clay mineralogical properties of Montgomery County, Virginia soilsObenshain, Samuel S.; Porter, Hobart C.; Rich, Charles I. (Virginia Agricultural Experiment Station, 1966-03)properties and composition of Montgomery County Virginia Soils
- Effects of certain fertilizer and manurial treatments on the cation exchange properties and organic matter content of dunmore silt loamRich, Charles I. (Virginia Agricultural and Mechanical College and Polytechnic Institute, 1941)An investigation of the pH, organic matter content, and cation exchange properties of the soil of the 26-year-old rotation and continuously cropped plots at Blacksburg, Virginia was carried out. Individual soil samples were taken of the eight sub-plots which represent each plot. After the chemical work had been completed, the data obtained were analyzed statistically. As a result of this investigation, the following conclusions are considered worthy of mention: Fertilizer and cropping practices which tended to increase crop yields also tended to increase soil organic matter and cation exchange capacity. There was a significant, positive correlation between organic matter content and cation exchange capacity of the soil. The organic fraction seemed to be of greater importance than the mineral fraction in contributing to the cation exchange capacity of this soil. Superphosphate, rock phosphate, muriate of potash and farm manure had or no effect on soil reaction. Ammonium sulphate caused a reduction of the pH and exchangeable calcium and magnesium and an increase in exchangeable hydrogen. The application of this fertilizer decreased exchangeable calcium but had no influence on the pH. Of the total potassium applied as muriate of potash, an average of 15 percent remained as exchangeable potassium in the upper six inches of soil. Where farm manure was applied, exchangeable calcium, magnesium, potassium, and cation exchange capacity were increased significantly. Examination of the samples and crop yield data from the check plots indicated considerable soil variation.
- Morphological descriptions and chemical properties of selected Prince William County, Virginia, soilsPettry, D. E.; Kaster, D. L.; Porter, Hobart C.; Obenshain, Samuel S. (Virginia Agricultural Experiment Station, 1970-08)Soil scientists collected samples from typical soils occurring extensively in Prince William County in order to determine the characteristic chemical properties by laboratory analysis. Morphological descriptions and chemical properties are presented in this report.
- Nottoway County soilsObenshain, Samuel S.; Coleman, C.S. (Virginia Agricultural Experiment Station, 1960-09)Chemical and physical properties of soil survey in Nottoway County Virginia
- Physical and chemical characteristics of Rappahannock County soilsObenshain, Samuel S.; Coleman, C.S.; Carter, J.B. (Virginia Agricultural Experiment Station, 1960-04)Physical and chemical characteristics of soils in Rappahannock county