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Filtering by: Creator Jackson, Lynn Advisor Gardner, E. Hugh

Relationships among phosphorus soil tests, forms of soil phosphorus, and plant uptake of phosphorus for selected southwestern Oregon soils

Creator:

Doerge, Thomas A.

Abstract:

A diversity in climate, geologic parent material, and soil characteristics exist in Jackson, Josephine, Coos, and Douglas Counties of southwest Oregon. Previous field trials and soil testing results have revealed uncertainties as to the phosphorus (P) status of the soils in this area. Twenty-four sites from nine agriculturally significant soil...

Resource Type:

Masters Thesis

Full Text:

Jackson, Josephine, Coos, and Douglas Counties of southwest Oregon. Previous field trials and soil
The fertilizer value of shrimp and crab processing wastes

Creator:

Costa, Robert Edward

Abstract:

The Federal Water Pollution Control Act Amendments of 1972 prohibits the discharge of seafood processing solid wastes into navigable waters after July 1, 1977. Oregon shrimp and crab processors must use other methods of disposal for the 15 to 30 million pounds of solid waste generated annually. The application of...

Resource Type:

Masters Thesis

Full Text:

also like to thank Dr. Tom Jackson, Dr. Van Volk, and Dr. Bill McGuire, members of my graduate
The effect of soil acidity and lime placement on root growth and yield of winter wheat and alfalfa

Creator:

Kauffman, Marvin Dean

Abstract:

The application of lime to an acid Nekia soil significantly increased the yield of winter wheat and alfalfa in a field experiment. Crop yields maximized when the lime was partially mixed into the surface four inches of the soil. Thorough mixing of the lime into the surface six inches of...

Resource Type:

Dissertation

Full Text:

rough drafts of my thesis. And I owe special thanks to my daughters, Lynn and Karen, for their help and