31 |
The effect of desiccation on the viability of soil protozoaPostell, Fred James, January 1966 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1966. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
|
32 |
Evaluation of plant pathogen activity in soilSommers, Lee Edwin, January 1969 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1969. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
|
33 |
Effects of certain chlorinated hydrocarbon insecticides on soil microorganismsSmith, Marian Estelle. January 1961 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1961. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 95-98).
|
34 |
Soil microbial communities from the alimentary canal of the earthworm Lumbricus terrestris (Oligochaeta: lumbricidae)Chapman, Joshua A. January 2006 (has links)
Thesis (M.S.)--West Virginia University, 2006. / Title from document title page. Document formatted into pages; contains viii, 75 p. : ill. (some col.), map. Includes abstract. Includes bibliographical references.
|
35 |
Influence of 2,4-D on the soil microfloraWestlake, Donald William Speck January 1955 (has links)
A rhizosphere effect was demonstrated for barley and corn plants at 4 to 6 weeks of age. No qualitative difference between the composition of the rhizosphere and indigenous flora was detected in the response of isolates to nutritional media of varying complexity.
Examination of the rhizospheres of barley plants treated with 2,4-D at the rates of 0, 4 and 8 ounces per acre indicated that there was no difference between the total counts of treated and untreated plants. However, evidence was obtained suggesting a qualitative difference between the rhizospheres of the 8 ounce treated plants and those of the 0 and 4 ounce treated plants.
On the other hand, corn plants treated with 2,4-D at the rates of 1 and 2 pounds per acre showed a temporary increase in their total rhizosphere count as compared to the total rhizosphere count of untreated plants. The increased total counts appeared to be due to the stimulation of those organisms requiring amino acids and yeast-soil extract for maximum growth.
The direct application of 2,4-D to soil at the rate of 100 pounds per acre appears to result in a slight decrease in the total indigenous count. Although this lowering of the total count was due to a decrease in the number of organisms in all nutritional groups, some groups were affected more than others.
By comparing the growth response of isolates from the indigenous and rhizosphere flora to 2,4-D at different pH levels, evidence was obtained which indicated that a physiological difference exists between these flora.
A study of the rates of the decomposition of 2,4-D in different soils indicates that there is a marked variability in the detoxication rates.
An organism was isolated which was capable of decomposing 2,4-D, This isolate showed morphological and cultural characteristics which suited members of the Corynbacterium and Achromobacter genera. / Land and Food Systems, Faculty of / Graduate
|
36 |
Survival of bacteria introduced into soil :: the influence of inoculation conditions, particle association, extractable soil components, and inoculum density /Rothermich, Mary M. 01 January 1992 (has links) (PDF)
No description available.
|
37 |
The Biological Effects of Fertilizers on Soil BacteriaCape, Robert E. January 1966 (has links)
No description available.
|
38 |
Soils containing 2,3,7,8-tetrachlorodibenzo-p-dioxin : aspects of their microbial activity and the potential for their microbially-mediated decontamination /Arthur, Mickey Francis January 1987 (has links)
No description available.
|
39 |
The effect of mineral fertilization and soil reaction and carbon-nitrogen ratio on soil fungi /Kaufman, D. D. January 1962 (has links)
No description available.
|
40 |
The effects of changing precipitation patterns on soil microbial communities and nitrogen cycling in the New Jersey PinelandsLandesman, William Joel, January 2009 (has links)
Thesis (Ph. D.)--Rutgers University, 2009. / "Graduate Program in Ecology and Evolution." Includes bibliographical references.
|
Page generated in 0.0631 seconds