Search results for proquest

Showing 1 to 7 of 7 results

Displacement of soil solubles through plant roots by means of air pressure as a method of study soil fertility problems
Lauritzen, C. W. (Cyril Walker), 1905-

Text (1934)
Part of Electronic Theses & Dissertations
Activity measurements in water and clay-water systems
Uehara, Goro

Text (1959)
Part of Electronic Theses & Dissertations
A study of the genesis of a gray brown podzolic-podzol intergrade soil profile in Michigan
Cann, Donald Bruce, 1909-

Text (1954)
Part of Electronic Theses & Dissertations
Biological activity as a measure of soil fertility : Part I: Mannitol decomposition in soil as a measure of crop response to fertilizers and soil productivity. Part II: The effect of soil microorganisms on soil reaction
Andrews, W. B. (William Baker), 1906-

Text (1936)
Part of Electronic Theses & Dissertations
The solubility of applied nutrients in muck soils & the composition & quality of certain muck crops as influenced by soil reaction changes & moisture conditions
Ligon, William S.

Text (1934)
Part of Electronic Theses & Dissertations
Some chemical and biological changes produced in a fox sandy loam soil by certain soil management practices
Carter, L. S. (Logan Sampson), 1906-

Text (1934)
Part of Electronic Theses & Dissertations
Properties, genesis and classification of textural subsoil horizons in some Michigan soils
Wurman, Eliahu, 1930-

Text (1957)
Part of Electronic Theses & Dissertations